# How should my chart of accounts line up with the lines on my business tax return? - **[not stated in the document · organizations generally]** Chart of accounts mapping links detailed general ledger accounts to standardised reporting categories or financial statement line items. → [CG-MCE-003#S04](#s-CG-MCE-003-S04) - **[United States (federal) · US businesses generally]** The form of business determines which income tax return form the business has to file. → [CG-MCE-003#S10](#s-CG-MCE-003-S10) - **[United States (federal) · All taxpayers computing taxable income under chapter 1 of the Internal Revenue Code]** Accounting records include the taxpayer's regular books of account and such other records and data as may be necessary to support the entries on the books of account and on the return; the example the regulation gives of such other records is a reconciliation of any differences between the books and the return. → [CG-MCE-003#S96](#s-CG-MCE-003-S96) ## What this page establishes - What each return reports, and where the tax rules stop — Not established - What the accounting software does with an account-to-tax-category assignment — Not established - Why the books and the return will not simply match — Established (Required authority: authoritative professional or accounting standard. Highest achieved: high quality professional secondary reference, primary regulator or government.) - What each return reports separately, form by form — Not established - What your preparer relies on, and what they keep — Partly established - What the chart of accounts is built to do — Partly established (Required authority: authoritative professional or accounting standard. Highest achieved: high quality professional secondary reference.) - Your ledger and your return are two different structures joined by a mapping — Established (Required authority: authoritative professional or accounting standard, primary regulator or government. Highest achieved: high quality professional secondary reference, official platform documentation, primary regulator or government.) - Which return you file decides what you are mapping to — Partly established - Where the mapping lives, and what each place costs you — Partly established - Costs that cannot share an account with anything else — Not established - Differences that stay, however well you map — Established (Required authority: authoritative professional or accounting standard. Highest achieved: high quality professional secondary reference, primary regulator or government.) - Mapping a new account the day it is created — Partly established - Proving the mapping is complete in both directions — Partly established - Agreeing the mapping with whoever prepares the return — Partly established - When one account genuinely belongs in two places — Not established ## Your ledger and your return are two different structures joined by a mapping - The configuration of a chart of accounts is determined by the individual business's own needs. _(jurisdiction: not stated in the document, entity_scope: organizations generally)_ `CG-MCE-003#S01` > “The exact configuration of the chart of accounts will be based on the needs of the individual business.” — [AccountingTools, Inc. — Chart of accounts definition](https://www.accountingtools.com/articles/the-chart-of-accounts), undated at census time; AccountingTools re-dates articles on revision (page footer: Copyright 2026); What is the Chart of Accounts?. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A chart of accounts should be granular enough to support meaningful management analysis and statutory reporting requirements. _(jurisdiction: not stated in the document, entity_scope: organizations generally)_ `CG-MCE-003#S03` > “The chart of accounts should be granular enough to support meaningful management analysis and statutory reporting requirements.” — [AccountingTools, Inc. — Chart of accounts definition](https://www.accountingtools.com/articles/the-chart-of-accounts), undated at census time; AccountingTools re-dates articles on revision (page footer: Copyright 2026); FAQs > How granular should a chart of accounts be?. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Chart of accounts mapping links detailed general ledger accounts to standardised reporting categories or financial statement line items. _(jurisdiction: not stated in the document, entity_scope: organizations generally)_ `CG-MCE-003#S04` > “Chart of accounts mapping is the process of linking detailed general ledger accounts to standardized reporting categories or financial statement line items.” — [AccountingTools, Inc. — Chart of accounts definition](https://www.accountingtools.com/articles/the-chart-of-accounts), undated at census time; AccountingTools re-dates articles on revision (page footer: Copyright 2026); FAQs > What is chart of accounts mapping?. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Mapping enables account balances to be aggregated consistently across entities, systems or reporting frameworks. _(jurisdiction: not stated in the document, entity_scope: organizations generally)_ `CG-MCE-003#S05` > “It enables consistent aggregation of account balances across entities, systems, or reporting frameworks.” — [AccountingTools, Inc. — Chart of accounts definition](https://www.accountingtools.com/articles/the-chart-of-accounts), undated at census time; AccountingTools re-dates articles on revision (page footer: Copyright 2026); FAQs > What is chart of accounts mapping?. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Required authority: authoritative professional or accounting standard, primary regulator or government. Highest achieved: high quality professional secondary reference, official platform documentation, primary regulator or government._ ## Which return you file decides what you are mapping to - The form of business determines which income tax return form the business has to file. _(jurisdiction: United States (federal), entity_scope: US businesses generally)_ `CG-MCE-003#S10` > “Your form of business determines which income tax return form you have to file.” — [Internal Revenue Service — Business structures](https://www.irs.gov/businesses/small-businesses-self-employed/business-structures), 2026-06-28; Business structures — body. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The most common forms of business are the sole proprietorship, partnership, corporation, and S corporation. _(jurisdiction: United States (federal), entity_scope: US businesses generally)_ `CG-MCE-003#S11` > “The most common forms of business are the sole proprietorship, partnership, corporation, and S corporation.” — [Internal Revenue Service — Business structures](https://www.irs.gov/businesses/small-businesses-self-employed/business-structures), 2026-06-28; Business structures — body. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Which income tax form a business uses depends on how the business is organized, and Table 2 identifies the return to file. _(jurisdiction: United States (federal tax law, as administered by the IRS), entity_scope: all businesses)_ `CG-MCE-003#S12` > “Which form you use depends on how your business is organized. See Table 2 to find out which return you have to file.” — [Internal Revenue Service, U.S. Department of the Treasury — Publication 583, Starting a Business and Keeping Records](https://www.irs.gov/pub/irs-pdf/p583.pdf), 2025-01-28; Business Taxes — Income Tax, printed page 6. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A partnership files its annual return of income on Form 1065. _(jurisdiction: United States (federal tax law, as administered by the IRS), entity_scope: partnerships)_ `CG-MCE-003#S14` > “Partnership Annual return of income 1065” — [Internal Revenue Service, U.S. Department of the Treasury — Publication 583, Starting a Business and Keeping Records](https://www.irs.gov/pub/irs-pdf/p583.pdf), 2025-01-28; Table 2. Which Forms Must I File?, printed page 6. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The sole member of a domestic LLC files Schedule C (or Schedule E or F, if applicable) for that LLC's business results. _(jurisdiction: United States (federal income tax), entity_scope: Sole member of a single-member domestic LLC not treated as a separate entity for federal income tax purposes, effective_from: 2025 tax year, effective_to: 2025 tax year, conditions: unless the domestic LLC has been elected to be treated as a corporation)_ `CG-MCE-003#S16` > “domestic LLC, file Schedule C (or Schedule E or F, if applicable)” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; General Instructions — Single-member limited liability company (LLC). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Entities formed as LLCs that are classified as partnerships for federal income tax purposes have the same filing requirements as domestic partnerships. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S17` > “ Entities formed as LLCs that are classified as partnerships for • The partnership had no effectively connected income during its tax year. federal income tax purposes have the same filing requirements as domestic partnerships.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Who Must File — Domestic Partnerships (page 4). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Schedule C presents a Part I titled 'Income'. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S18` > “Part I. Income” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Part I heading. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Schedule C presents a Part II titled 'Expenses'. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S19` > “Part II. Expenses” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Part II heading. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Form 1120-S is the U.S. income tax return for an S corporation. _(jurisdiction: United States (federal income tax), entity_scope: S corporation filing Form 1120-S, effective_from: 2025 tax year)_ `CG-MCE-003#S23` > “U.S. Income Tax Return for an S Corporation” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1120-S, U.S. Income Tax Return for an S Corporation](https://www.irs.gov/pub/irs-pdf/i1120s.pdf), 2026-01-15; Title page — “2025 / Instructions for Form 1120-S / U.S. Income Tax Return for an S Corporation”. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Form 1120 is titled 'U.S. Corporation Income Tax Return' and is the form directed to be used for reporting. _(jurisdiction: United States (federal), entity_scope: C corporations and other entities required to file Form 1120, effective_from: tax years beginning in 2025)_ `CG-MCE-003#S25` > “Use Form 1120, U.S. Corporation Income Tax Return, to report” — [Internal Revenue Service, U.S. Department of the Treasury — Instructions for Form 1120, U.S. Corporation Income Tax Return](https://www.irs.gov/pub/irs-pdf/i1120.pdf), 2025 tax year revision; General Instructions — Purpose of Form. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Mapping edits are specific to the selected tax form: changing the form part-way through mapping requires the edits to be made again on the new form. _(jurisdiction: United States, entity_scope: Accountants using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: Help article updated 8/31/2026, conditions: the tax form is changed part-way through mapping accounts)_ `CG-MCE-003#S62` > “Important : Edits don’t carry over to different forms. If you change forms in the middle of mapping accounts, you’ll need to make edits again on the new form.” — [Intuit Inc. — Use Prep for taxes to map and export your clients’ tax info](https://quickbooks.intuit.com/learn-support/en-us/help-article/map-forms-accounts/use-prep-taxes-map-export-clients-tax-info/L4EUJdqX3_US_en_US), 2026-08-31; Step 4: Map accounts to tax forms — "Important" callout. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Partly established. Established: the form the business takes determines which return that is (S10, S12). Missing: the set of reported categories depends on which return the business files; the mapping target must be identified before any account is assigned._ ## What each return reports, and where the tax rules stop - Each taxpayer is required to make a return of taxable income for each taxable year and to maintain accounting records that will enable the filing of a correct return. _(jurisdiction: United States (federal), entity_scope: All taxpayers computing taxable income under chapter 1 of the Internal Revenue Code)_ `CG-MCE-003#S08` > “Each taxpayer is required to make a return of his taxable income for each taxable year and must maintain such accounting records as will enable him to file a correct return.” — [Office of the Federal Register / Government Publishing Office (eCFR), publishing Treasury/IRS Income Tax Regulations — 26 CFR 1.446-1 - General rule for methods of accounting](https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR9453c3e600b3f20/section-1.446-1), 2026-09-03; § 1.446-1(a)(4) General rule. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The recordkeeping system should include a summary of business transactions, ordinarily made in the books such as accounting journals and ledgers, and the books must show gross income, deductions and credits. _(jurisdiction: United States (federal tax law, as administered by the IRS), entity_scope: a person in business for federal tax purposes)_ `CG-MCE-003#S09` > “Your recordkeeping system should include a summary of your business transactions. This summary is ordinarily made in your books (for example, accounting journals and ledgers). Your books must show your gross income, as well as your deductions and credits.” — [Internal Revenue Service, U.S. Department of the Treasury — Publication 583, Starting a Business and Keeping Records](https://www.irs.gov/pub/irs-pdf/p583.pdf), 2025-01-28; Recordkeeping — Kinds of Records To Keep, printed page 12. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: The form of business determines which income tax return form the business has to file. ([CG-MCE-003#S10](#s-CG-MCE-003-S10)) - See above: The most common forms of business are the sole proprietorship, partnership, corporation, and S corporation. ([CG-MCE-003#S11](#s-CG-MCE-003-S11)) - See above: Which income tax form a business uses depends on how the business is organized, and Table 2 identifies the return to file. ([CG-MCE-003#S12](#s-CG-MCE-003-S12)) - See above: A partnership files its annual return of income on Form 1065. ([CG-MCE-003#S14](#s-CG-MCE-003-S14)) - See above: The sole member of a domestic LLC files Schedule C (or Schedule E or F, if applicable) for that LLC's business results. ([CG-MCE-003#S16](#s-CG-MCE-003-S16)) - See above: Entities formed as LLCs that are classified as partnerships for federal income tax purposes have the same filing requirements as domestic partnerships. ([CG-MCE-003#S17](#s-CG-MCE-003-S17)) - See above: Schedule C presents a Part I titled 'Income'. ([CG-MCE-003#S18](#s-CG-MCE-003-S18)) - See above: Schedule C presents a Part II titled 'Expenses'. ([CG-MCE-003#S19](#s-CG-MCE-003-S19)) - Only trade or business activity deductions are reported on Form 1065 lines 9 through 21. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S22` > “ Also report the partnership’s fishing income on this line. Caution: Report only trade or business activity deductions on For a special rule concerning the method of accounting for a lines 9 through 21.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Deductions — Caution (page 20). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Form 1120-S is the U.S. income tax return for an S corporation. ([CG-MCE-003#S23](#s-CG-MCE-003-S23)) - A stated list of expenses is not reported on Form 1120-S page 1, lines 7 through 20. _(jurisdiction: United States (federal income tax), entity_scope: S corporation filing Form 1120-S, effective_from: 2025 tax year)_ `CG-MCE-003#S24` > “Don’t report the following expenses on lines 7 through 20.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1120-S, U.S. Income Tax Return for an S Corporation](https://www.irs.gov/pub/irs-pdf/i1120s.pdf), 2026-01-15; Specific Instructions — Deductions (introductory caution). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Form 1120 is titled 'U.S. Corporation Income Tax Return' and is the form directed to be used for reporting. ([CG-MCE-003#S25](#s-CG-MCE-003-S25)) _Not established from an authoritative source._ ## What the chart of accounts is built to do - See above: The configuration of a chart of accounts is determined by the individual business's own needs. ([CG-MCE-003#S01](#s-CG-MCE-003-S01)) - See above: A chart of accounts should be granular enough to support meaningful management analysis and statutory reporting requirements. ([CG-MCE-003#S03](#s-CG-MCE-003-S03)) - See above: Chart of accounts mapping links detailed general ledger accounts to standardised reporting categories or financial statement line items. ([CG-MCE-003#S04](#s-CG-MCE-003-S04)) - See above: Mapping enables account balances to be aggregated consistently across entities, systems or reporting frameworks. ([CG-MCE-003#S05](#s-CG-MCE-003-S05)) _Partly established. Established: what a small business's chart of accounts is built to serve - the operating and management information the business itself runs on (S03); what conventionally determines its account structure (S01). Missing: what management use is lost when a chart is restructured to follow an external reporting layout instead._ _Required authority: authoritative professional or accounting standard. Highest achieved: high quality professional secondary reference._ ## Where the mapping lives, and what each place costs you - QuickBooks assigns default tax categories to the accounts in the default Chart of Accounts. _(jurisdiction: United States, entity_scope: S corporations and partnerships using QuickBooks Online (filing Form 1120S or 1065), platform: QuickBooks Online, platform_edition: QuickBooks Ledger, QuickBooks Online Advanced, Essentials, Plus, Simple Start, QuickBooks Solopreneur)_ `CG-MCE-003#S52` > “QuickBooks assigns default tax categories for the default Chart of Accounts.” — [Intuit Inc. — Manage account mapping to tax categories for your tax forms as an S corporation](https://quickbooks.intuit.com/learn-support/en-us/help-article/corporation/manage-account-mapping-tax-categories-tax-forms/L54GSV2pl_US_en_US), 2026-08-04; 'Navigate the Income Tax page'. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - For accounts outside the default Chart of Accounts, the user needs to map the accounts to tax categories. _(jurisdiction: United States, entity_scope: S corporations and partnerships using QuickBooks Online (filing Form 1120S or 1065), platform: QuickBooks Online, platform_edition: QuickBooks Ledger, QuickBooks Online Advanced, Essentials, Plus, Simple Start, QuickBooks Solopreneur)_ `CG-MCE-003#S53` > “need to map your accounts to tax categories” — [Intuit Inc. — Manage account mapping to tax categories for your tax forms as an S corporation](https://quickbooks.intuit.com/learn-support/en-us/help-article/corporation/manage-account-mapping-tax-categories-tax-forms/L54GSV2pl_US_en_US), 2026-08-04; 'Navigate the Income Tax page', on custom accounts. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The category or account chosen for a transaction determines where it applies on the 1120S or 1065 tax forms. _(jurisdiction: United States, entity_scope: S corporations and partnerships using QuickBooks Online (filing Form 1120S or 1065), platform: QuickBooks Online, platform_edition: QuickBooks Ledger, QuickBooks Online Advanced, Essentials, Plus, Simple Start, QuickBooks Solopreneur)_ `CG-MCE-003#S54` > “The category or account you choose for a transaction determines where it'll apply on your 1120S or 1065 tax forms.” — [Intuit Inc. — Manage account mapping to tax categories for your tax forms as an S corporation](https://quickbooks.intuit.com/learn-support/en-us/help-article/corporation/manage-account-mapping-tax-categories-tax-forms/L54GSV2pl_US_en_US), 2026-08-04; Introduction. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - An account can be mapped manually by selecting Map to tax category from the dropdown menu. _(jurisdiction: United States, entity_scope: S corporations and partnerships using QuickBooks Online (filing Form 1120S or 1065), platform: QuickBooks Online, platform_edition: QuickBooks Ledger, QuickBooks Online Advanced, Essentials, Plus, Simple Start, QuickBooks Solopreneur)_ `CG-MCE-003#S55` > “Select Map to tax category from the ▼ dropdown menu” — [Intuit Inc. — Manage account mapping to tax categories for your tax forms as an S corporation](https://quickbooks.intuit.com/learn-support/en-us/help-article/corporation/manage-account-mapping-tax-categories-tax-forms/L54GSV2pl_US_en_US), 2026-08-04; 'Manage account mapping' — manual mapping, step 2. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Selecting a detail type when creating a new expense account determines where that account is categorized on the QuickBooks Income Tax page and on Schedule C. _(jurisdiction: United States, entity_scope: QuickBooks Online users filing a U.S. Schedule C (sole proprietors), platform: QuickBooks Online, platform_edition: QuickBooks Online Advanced, Essentials, Plus, Simple Start, QuickBooks Ledger, Intuit Enterprise Suite)_ `CG-MCE-003#S56` > “When you create a new account/category for expenses, selecting a detail type determines where it's categorized on your Income Tax page in QuickBooks and your Schedule C tax form.” — [Intuit Inc. — Learn where detail types appear on your tax forms](https://quickbooks.intuit.com/learn-support/en-us/help-article/tax-forms/learn-quickbooks-online-detail-types-appear-tax/L8cmkg8i9_US_en_US), 2026-08-03; 'Account/Category mapping'. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - QuickBooks Online Accountant contains a tool called Prep for taxes that lets an accountant review a client's accounts from a single dashboard. _(jurisdiction: United States, entity_scope: Accountants using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: Help article updated 8/31/2026)_ `CG-MCE-003#S59` > “Prep for taxes is a tool in QuickBooks Online Accountant lets you review a client’s accounts from a single dashboard.” — [Intuit Inc. — Use Prep for taxes to map and export your clients’ tax info](https://quickbooks.intuit.com/learn-support/en-us/help-article/map-forms-accounts/use-prep-taxes-map-export-clients-tax-info/L4EUJdqX3_US_en_US), 2026-08-31; Body, opening paragraph (after "Learn how to use Prep for taxes…"). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - In Prep for taxes the accountant assigns the client's accounts to specific lines on tax forms. _(jurisdiction: United States, entity_scope: Accountants using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: Help article updated 8/31/2026, conditions: after reviewing the client's accounts)_ `CG-MCE-003#S60` > “After reviewing your client’s accounts, you’ll assign them to specific lines on tax forms.” — [Intuit Inc. — Use Prep for taxes to map and export your clients’ tax info](https://quickbooks.intuit.com/learn-support/en-us/help-article/map-forms-accounts/use-prep-taxes-map-export-clients-tax-info/L4EUJdqX3_US_en_US), 2026-08-31; Step 4: Map accounts to tax forms. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Mapping edits are specific to the selected tax form: changing the form part-way through mapping requires the edits to be made again on the new form. ([CG-MCE-003#S62](#s-CG-MCE-003-S62)) - An account already assigned to a tax line can be reassigned to a different tax line. _(jurisdiction: United States, entity_scope: Accountants using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: Help article updated 8/31/2026)_ `CG-MCE-003#S64` > “Review each tax line. If you need to reassign an account to a different tax line:” — [Intuit Inc. — Use Prep for taxes to map and export your clients’ tax info](https://quickbooks.intuit.com/learn-support/en-us/help-article/map-forms-accounts/use-prep-taxes-map-export-clients-tax-info/L4EUJdqX3_US_en_US), 2026-08-31; Step 4: Map accounts to tax forms. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - For this interpretation, "working papers" are all other items prepared solely for purposes of the engagement, including items prepared by the member (such as audit programs, analytical review schedules, and statistical sampling results and analyses) and items prepared by the client at the member's request reflecting testing or other work done by the member. _(jurisdiction: United States, entity_scope: AICPA members in public practice and their firms)_ `CG-MCE-003#S66` > “Working papers are all other items prepared solely for purposes of the engagement and include items prepared by the i. member, such as audit programs, analytical review schedules, and statistical sampling results and analyses. ii. client at the request of the member and reflecting testing or other work done by the member.” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.400.200 Records Requests, Terminology, .01f. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Working papers are the member's property and the member is not required to make such information available; state and federal statutes and regulations and contractual agreements may impose additional requirements on the member. _(jurisdiction: United States, entity_scope: AICPA members in public practice and their firms)_ `CG-MCE-003#S67` > “Working papers are the member’s property, and the member is not required to make such information available. However, state and federal statutes and regulations and contractual agreements may impose additional requirements on the member.” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.400.200 Records Requests, Interpretation, .09. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - For this interpretation, "member-prepared records" are accounting or other records the member was not specifically engaged to prepare that are not in the client's books and records or otherwise not available to the client, rendering the client's financial information incomplete; the stated examples are adjusting, closing, combining or consolidating journal entries (with supporting computations) and supporting schedules and documents the member proposed or prepared as part of an engagement. _(jurisdiction: United States, entity_scope: AICPA members in public practice and their firms)_ `CG-MCE-003#S68` > “Member-prepared records are accounting or other records that the member was not specifically engaged to prepare and that are not in the client’s books and records or are otherwise not available to the client, thus rendering the client’s financial information incomplete. Examples include adjusting, closing, combining, or consolidating journal entries (including computations supporting such entries) and supporting schedules and documents that the member proposed or prepared as part of an engagement (for example, an audit).” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.400.200 Records Requests, Terminology, .01d. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - On an initial request for client-provided records the member should make those records in the member's custody or control available to the person or entity that provided them; a reasonable fee may be charged for time and expense to retrieve, copy and ship them, but client-provided records may not be withheld for nonpayment of those fees. _(jurisdiction: United States, entity_scope: AICPA members in public practice and their firms)_ `CG-MCE-003#S70` > “When an initial request for client-provided records is received, the member should make those records in the member’s custody or control available to the person or entity that provided the records to the member. The member may charge a reasonable fee for the time and expense incurred to retrieve, copy, and ship such records; however, the client-provided records may not be withheld for nonpayment of such fees.” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.400.200 Records Requests, Interpretation, .06. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Once a member has complied, the member is under no ethical obligation to retain records for periods exceeding applicable professional standards, state and federal statutes and regulations, and contractual agreements relating to the service performed. _(jurisdiction: United States, entity_scope: AICPA members in public practice and their firms)_ `CG-MCE-003#S71` > “retain records for periods that exceed applicable professional standards, state and federal statutes and regulations, and contractual agreements relating to the service performed.” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.400.200 Records Requests, Interpretation, .08b. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Records of the client do not include any return, claim for refund, schedule, affidavit, appraisal or any other document prepared by the practitioner or the practitioner's firm, employees or agents if the practitioner is withholding such document pending the client's performance of its contractual obligation to pay fees with respect to such document. _(jurisdiction: United States (federal), entity_scope: practitioners practicing before the Internal Revenue Service, and their clients, conditions: practitioner is withholding the document pending payment of fees for that document)_ `CG-MCE-003#S73` > “The term Service, rendering written advice with does not include any return, claim for respect to any entity, transaction, plan refund, schedule, affidavit, appraisal or or arrangement, and representing a cli- any other document prepared by the ent at conferences, hearings, and meet- practitioner or the practitioner’s firm, ings. employees or agents if the practitioner (d) Effective/applicability date. This is withholding such document pending section is applicable for fee arrange- the client’s performance of its contrac- ments entered into after March 26, 2008. tual obligation to pay fees with respect [T.D. 9359, 72 FR 54548, Sept. 26, 2007] to such document.” — [U.S. Government Publishing Office, Code of Federal Regulations — 31 CFR 10.28 - Return of client's records](https://www.govinfo.gov/content/pkg/CFR-2025-title31-vol1/pdf/CFR-2025-title31-vol1-sec10-28.pdf), 2025-07-01; § 10.28(b) [The pinned text file is a two-column CFR page whose columns are interleaved line by line, so a byte-exact quote of a sentence in one column necessarily carries the adjacent column's text (and any page furniture) inside it. Read only the column named in this locator.]. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Partly established. Established: how the mapping is constructed (S52, S53, S55, S56, S60). Missing: where the mapping is held - within the software's own mapping feature, in a maintained schedule alongside the chart, or in the preparer's workpapers; what each choice costs in durability and visibility._ ## What the accounting software does with an account-to-tax-category assignment - See above: QuickBooks assigns default tax categories to the accounts in the default Chart of Accounts. ([CG-MCE-003#S52](#s-CG-MCE-003-S52)) - See above: For accounts outside the default Chart of Accounts, the user needs to map the accounts to tax categories. ([CG-MCE-003#S53](#s-CG-MCE-003-S53)) - See above: The category or account chosen for a transaction determines where it applies on the 1120S or 1065 tax forms. ([CG-MCE-003#S54](#s-CG-MCE-003-S54)) - See above: An account can be mapped manually by selecting Map to tax category from the dropdown menu. ([CG-MCE-003#S55](#s-CG-MCE-003-S55)) - See above: Selecting a detail type when creating a new expense account determines where that account is categorized on the QuickBooks Income Tax page and on Schedule C. ([CG-MCE-003#S56](#s-CG-MCE-003-S56)) - The detail type on any account can be updated, and doing so changes where that account's amounts appear on the tax forms. _(jurisdiction: United States, entity_scope: QuickBooks Online users filing a U.S. Schedule C (sole proprietors), platform: QuickBooks Online, platform_edition: QuickBooks Online Advanced, Essentials, Plus, Simple Start, QuickBooks Ledger, Intuit Enterprise Suite)_ `CG-MCE-003#S58` > “If something doesn't look right, you can update your detail type for any account. This will change where the amounts for that account appear on your tax forms.” — [Intuit Inc. — Learn where detail types appear on your tax forms](https://quickbooks.intuit.com/learn-support/en-us/help-article/tax-forms/learn-quickbooks-online-detail-types-appear-tax/L8cmkg8i9_US_en_US), 2026-08-03; 'Change a detail type', opening. Verified 2026-09-08. - See above: QuickBooks Online Accountant contains a tool called Prep for taxes that lets an accountant review a client's accounts from a single dashboard. ([CG-MCE-003#S59](#s-CG-MCE-003-S59)) - See above: In Prep for taxes the accountant assigns the client's accounts to specific lines on tax forms. ([CG-MCE-003#S60](#s-CG-MCE-003-S60)) - See above: Mapping edits are specific to the selected tax form: changing the form part-way through mapping requires the edits to be made again on the new form. ([CG-MCE-003#S62](#s-CG-MCE-003-S62)) - Prep for taxes assigns most accounts to tax lines automatically, and the accounts it leaves unassigned are listed in a "We found unmapped accounts" section from which they can be assigned to a tax line. _(jurisdiction: United States, entity_scope: Accountants using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: Help article updated 8/31/2026)_ `CG-MCE-003#S63` > “Prep for taxes automatically assigns most accounts to tax lines. Any unassigned accounts appear in the “We found unmapped accounts” section. Simply select Assign tax line and move them to the correct tax line.” — [Intuit Inc. — Use Prep for taxes to map and export your clients’ tax info](https://quickbooks.intuit.com/learn-support/en-us/help-article/map-forms-accounts/use-prep-taxes-map-export-clients-tax-info/L4EUJdqX3_US_en_US), 2026-08-31; Step 4: Map accounts to tax forms. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: An account already assigned to a tax line can be reassigned to a different tax line. ([CG-MCE-003#S64](#s-CG-MCE-003-S64)) - After the accountant reviews the client's accounts, Prep for taxes exports accounts automatically to lines on tax forms. _(jurisdiction: United States, entity_scope: Accountants using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: Help article updated 8/31/2026, conditions: after the client's accounts have been reviewed)_ `CG-MCE-003#S65` > “After you review your client's accounts, Prep for taxes automatically export accounts to the proper lines on tax forms.” — [Intuit Inc. — Use Prep for taxes to map and export your clients’ tax info](https://quickbooks.intuit.com/learn-support/en-us/help-article/map-forms-accounts/use-prep-taxes-map-export-clients-tax-info/L4EUJdqX3_US_en_US), 2026-08-31; Body, opening paragraph. Verified 2026-09-08. _Not established from an authoritative source._ ## Mapping a new account the day it is created - See above: For accounts outside the default Chart of Accounts, the user needs to map the accounts to tax categories. ([CG-MCE-003#S53](#s-CG-MCE-003-S53)) - See above: Selecting a detail type when creating a new expense account determines where that account is categorized on the QuickBooks Income Tax page and on Schedule C. ([CG-MCE-003#S56](#s-CG-MCE-003-S56)) - See above: The detail type on any account can be updated, and doing so changes where that account's amounts appear on the tax forms. ([CG-MCE-003#S58](#s-CG-MCE-003-S58)) - See above: Prep for taxes assigns most accounts to tax lines automatically, and the accounts it leaves unassigned are listed in a "We found unmapped accounts" section from which they can be assigned to a tax line. ([CG-MCE-003#S63](#s-CG-MCE-003-S63)) - See above: After the accountant reviews the client's accounts, Prep for taxes exports accounts automatically to lines on tax forms. ([CG-MCE-003#S65](#s-CG-MCE-003-S65)) _Partly established. Established: the maintenance rule that a new account is mapped at the moment it is created (S56). Missing: the review that confirms the mapping is complete before the books are handed over._ ## Proving the mapping is complete in both directions - See above: Each taxpayer is required to make a return of taxable income for each taxable year and to maintain accounting records that will enable the filing of a correct return. ([CG-MCE-003#S08](#s-CG-MCE-003-S08)) - See above: The recordkeeping system should include a summary of business transactions, ordinarily made in the books such as accounting journals and ledgers, and the books must show gross income, deductions and credits. ([CG-MCE-003#S09](#s-CG-MCE-003-S09)) - Line 5 of Form 1125-A is 'Other costs', reported separately with an attached schedule. _(jurisdiction: United States (federal), entity_scope: filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065 that report a deduction for cost of goods sold, platform_edition: Form 1125-A (Rev. 11-2024))_ `CG-MCE-003#S30` > “Other costs (attach schedule)” — [Internal Revenue Service, U.S. Department of the Treasury — Form 1125-A, Cost of Goods Sold (with instructions)](https://www.irs.gov/pub/irs-pdf/f1125a.pdf), 2024-11; Form 1125-A, line 5. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Cost of goods sold is line 6 minus line 7 and is entered on Form 1120, page 1, line 2, or the appropriate line of the filer's return. _(jurisdiction: United States (federal), entity_scope: filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065 that report a deduction for cost of goods sold, platform_edition: Form 1125-A (Rev. 11-2024))_ `CG-MCE-003#S31` > “Cost of goods sold. Subtract line 7 from line 6. Enter here and on Form 1120, page 1, line 2, or the appropriate line of your tax return.” — [Internal Revenue Service, U.S. Department of the Treasury — Form 1125-A, Cost of Goods Sold (with instructions)](https://www.irs.gov/pub/irs-pdf/f1125a.pdf), 2024-11; Form 1125-A, line 8. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Each other expense must be listed separately, by type and amount, in the space provided, with the total entered on the summary lines. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S41` > “each expense separately in the space provided. Enter the total” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Part V. Other Expenses. Line 48. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Line 21 reports the total allowable trade or business deductions that are not deductible elsewhere on page 1 of Form 1065, with a statement attached listing by type and amount each deduction included on that line. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S47` > “Enter the total allowable trade or business deductions that aren’t entertainment expenses, membership dues, and facilities used deductible elsewhere on page 1 of Form 1065. Attach a in connection with these activities can’t be deducted. Also, statement listing by type and amount each deduction included special rules apply to deductions for gifts, luxury water travel, on this line. Examples of other deductions include the following.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Line 21. Other Deductions (page 24). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Prep for taxes assigns most accounts to tax lines automatically, and the accounts it leaves unassigned are listed in a "We found unmapped accounts" section from which they can be assigned to a tax line. ([CG-MCE-003#S63](#s-CG-MCE-003-S63)) - Accounting records include the taxpayer's regular books of account and such other records and data as may be necessary to support the entries on the books of account and on the return; the example the regulation gives of such other records is a reconciliation of any differences between the books and the return. _(jurisdiction: United States (federal), entity_scope: All taxpayers computing taxable income under chapter 1 of the Internal Revenue Code)_ `CG-MCE-003#S96` > “Accounting records include the taxpayer's regular books of account and such other records and data as may be necessary to support the entries on his books of account and on his return, as for example, a reconciliation of any differences between such books and his return.” — [Office of the Federal Register / Government Publishing Office (eCFR), publishing Treasury/IRS Income Tax Regulations — 26 CFR 1.446-1 - General rule for methods of accounting](https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR9453c3e600b3f20/section-1.446-1), 2026-09-03; § 1.446-1(a)(4) General rule. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Partly established. Established: every reported category can be traced back to the accounts that feed it (S96). Missing: every active account is assigned to a reported category or explicitly marked as not reported._ ## Costs that cannot share an account with anything else - See above: Only trade or business activity deductions are reported on Form 1065 lines 9 through 21. ([CG-MCE-003#S22](#s-CG-MCE-003-S22)) - See above: A stated list of expenses is not reported on Form 1120-S page 1, lines 7 through 20. ([CG-MCE-003#S24](#s-CG-MCE-003-S24)) - The listed filers must complete and attach the form where the stated condition is met. _(jurisdiction: United States (federal), entity_scope: filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065 that report a deduction for cost of goods sold, platform_edition: Form 1125-A (Rev. 11-2024), conditions: Filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065; if the applicable entity reports a deduction for cost of goods sold)_ `CG-MCE-003#S27` > “1120S, or 1065 must complete and attach” — [Internal Revenue Service, U.S. Department of the Treasury — Form 1125-A, Cost of Goods Sold (with instructions)](https://www.irs.gov/pub/irs-pdf/f1125a.pdf), 2024-11; General Instructions — Who Must File. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Line 3 of Form 1125-A is 'Cost of labor' — a separately stated component of cost of goods sold. _(jurisdiction: United States (federal), entity_scope: filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065 that report a deduction for cost of goods sold, platform_edition: Form 1125-A (Rev. 11-2024))_ `CG-MCE-003#S28` > “Cost of labor” — [Internal Revenue Service, U.S. Department of the Treasury — Form 1125-A, Cost of Goods Sold (with instructions)](https://www.irs.gov/pub/irs-pdf/f1125a.pdf), 2024-11; Form 1125-A, line 3. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Line 4 of Form 1125-A is 'Additional section 263A costs', reported separately with an attached schedule. _(jurisdiction: United States (federal), entity_scope: filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065 that report a deduction for cost of goods sold, platform_edition: Form 1125-A (Rev. 11-2024))_ `CG-MCE-003#S29` > “Additional section 263A costs (attach schedule)” — [Internal Revenue Service, U.S. Department of the Treasury — Form 1125-A, Cost of Goods Sold (with instructions)](https://www.irs.gov/pub/irs-pdf/f1125a.pdf), 2024-11; Form 1125-A, line 4. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Line 5 of Form 1125-A is 'Other costs', reported separately with an attached schedule. ([CG-MCE-003#S30](#s-CG-MCE-003-S30)) - Contract labor includible on line 17, 21, 26, or 37 is excluded from line 11, and salaries are also not included there. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S33` > “includible on line 17, 21, 26, or 37. Also, do not include salaries” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 11. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Salaries and wages deducted elsewhere on the return, and amounts paid to the filer themself, must not be included on line 26. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S34` > “ Do not include salaries and wages deducted elsewhere on” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 26. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - When actual vehicle expenses are deducted, depreciation is shown on line 13 and rent or lease payments on a separate line, not with the other line 9 vehicle costs. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S35` > “ • Show depreciation on line 13 and rent or lease payments on” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 9, If you deduct actual expenses. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Expenses for meals must not be included on line 24a (travel); they go on line 24b instead. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S36` > “Do not include expenses for meals on this line.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 24a. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Amounts paid to rent or lease other property are entered on line 20b, separately from line 20a. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S37` > “Enter on line 20b amounts paid to rent or lease other” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Lines 20a and 20b. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Federal income taxes, including self-employment tax, are among the taxes that must not be deducted on line 23. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S38` > “ • Federal income taxes, including your self-employment tax.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 23, Do not deduct the following. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Line 14 deducts contributions to employee benefit programs that are not an incidental part of a pension or profit-sharing plan reported on line 19. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S39` > “Deduct contributions to employee benefit programs that are not” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 14. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A filer who produced real or tangible personal property, or acquired real or personal property for resale, must generally capitalize certain expenses in inventory or other property rather than deduct them. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year, conditions: if you produced real or tangible personal property or acquired real or personal property for resale)_ `CG-MCE-003#S42` > “must generally capitalize certain expenses in inventory or other” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Part II. Expenses, Capitalizing costs of producing property and acquiring property for resale. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Items the partnership must state separately because they require separate computations by the partners are not reported on lines 9 through 21; examples include expenses incurred for the production of income instead of in a trade or business, charitable contributions, foreign taxes paid or accrued, intangible drilling and development costs, soil and water conservation expenditures, amortizable basis of reforestation expenditures, and exploration expenditures, whose distributive shares are reported separately to each partner on Schedule K-1. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S44` > “exchange, or involuntary conversion of assets used in a trade or • Items the partnership must state separately that require business activity. Ordinary gains or losses from the sale, separate computations by the partners. Examples include exchange, or involuntary conversion of rental activity assets are expenses incurred for the production of income instead of in reported separately on Form 8825, line 21, or Schedule K, a trade or business, charitable contributions, foreign taxes line 3c, and in box 3 of Schedule K-1, generally as a part of the paid or accrued, intangible drilling and development costs, net income (loss) from the rental activity. soil and water conservation expenditures, amortizable basis A partnership that is a partner in another partnership must of reforestation expenditures, and exploration expenditures. include on Form 4797 its share of ordinary gains (losses) from The distributive shares of these expenses are reported sales, exchanges, or involuntary conversions (other than separately to each partner on Schedule K-1.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Deductions — items that must be stated separately (page 20). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - No section 179 expense deduction is included on line 16; that amount is not deducted by the partnership but is passed through to the partners in box 12 of Schedule K-1. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S46` > “ must also capitalize to the basis of the designated property Don’t include any section 179 expense deduction on this line. any interest on debt allocable to an asset used to produce This amount isn’t deducted by the partnership. Instead, it’s designated property. A partner may have to capitalize passed through to the partners in box 12 of Schedule K-1.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Line 16. Depreciation (page 23). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The fringe benefit expenditures described in the Line 7 instruction are also reported as wages in box 1 of Form W-2. _(jurisdiction: United States (federal income tax), entity_scope: S corporation filing Form 1120-S; fringe benefits made on behalf of officers and employees owning more than 2% of the corporation’s stock, effective_from: 2025 tax year)_ `CG-MCE-003#S49` > “Also report these fringe benefits as wages in box 1 of Form W-2.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1120-S, U.S. Income Tax Return for an S Corporation](https://www.irs.gov/pub/irs-pdf/i1120s.pdf), 2026-01-15; Specific Instructions — Deductions — Line 7. Compensation of Officers (fringe benefit expenditures for officers and employees owning more than 2% of stock). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Deductible officers' compensation is reported on Form 1120 line 12. _(jurisdiction: United States (federal), entity_scope: C corporations and other entities required to file Form 1120, effective_from: tax years beginning in 2025, conditions: do not include compensation deductible elsewhere on the return, such as amounts included in cost of goods sold)_ `CG-MCE-003#S50` > “Enter deductible officers’ compensation on line 12.” — [Internal Revenue Service, U.S. Department of the Treasury — Instructions for Form 1120, U.S. Corporation Income Tax Return](https://www.irs.gov/pub/irs-pdf/i1120.pdf), 2025 tax year revision; Deductions — Line 12. Compensation of Officers. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Not established from an authoritative source._ ## What each return reports separately, form by form - See above: Only trade or business activity deductions are reported on Form 1065 lines 9 through 21. ([CG-MCE-003#S22](#s-CG-MCE-003-S22)) - See above: A stated list of expenses is not reported on Form 1120-S page 1, lines 7 through 20. ([CG-MCE-003#S24](#s-CG-MCE-003-S24)) - See above: The listed filers must complete and attach the form where the stated condition is met. ([CG-MCE-003#S27](#s-CG-MCE-003-S27)) - See above: Line 3 of Form 1125-A is 'Cost of labor' — a separately stated component of cost of goods sold. ([CG-MCE-003#S28](#s-CG-MCE-003-S28)) - See above: Line 4 of Form 1125-A is 'Additional section 263A costs', reported separately with an attached schedule. ([CG-MCE-003#S29](#s-CG-MCE-003-S29)) - See above: Line 5 of Form 1125-A is 'Other costs', reported separately with an attached schedule. ([CG-MCE-003#S30](#s-CG-MCE-003-S30)) - See above: Cost of goods sold is line 6 minus line 7 and is entered on Form 1120, page 1, line 2, or the appropriate line of the filer's return. ([CG-MCE-003#S31](#s-CG-MCE-003-S31)) - Purchases reported on line 2 are reduced by items withdrawn for personal use. _(jurisdiction: United States (federal), entity_scope: filers of Form 1120, 1120-C, 1120-F, 1120S, or 1065 that report a deduction for cost of goods sold, platform_edition: Form 1125-A (Rev. 11-2024), conditions: personal use)_ `CG-MCE-003#S32` > “Reduce purchases by items withdrawn for” — [Internal Revenue Service, U.S. Department of the Treasury — Form 1125-A, Cost of Goods Sold (with instructions)](https://www.irs.gov/pub/irs-pdf/f1125a.pdf), 2024-11; Specific Instructions — Line 2. Purchases. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Contract labor includible on line 17, 21, 26, or 37 is excluded from line 11, and salaries are also not included there. ([CG-MCE-003#S33](#s-CG-MCE-003-S33)) - See above: Salaries and wages deducted elsewhere on the return, and amounts paid to the filer themself, must not be included on line 26. ([CG-MCE-003#S34](#s-CG-MCE-003-S34)) - See above: When actual vehicle expenses are deducted, depreciation is shown on line 13 and rent or lease payments on a separate line, not with the other line 9 vehicle costs. ([CG-MCE-003#S35](#s-CG-MCE-003-S35)) - See above: Expenses for meals must not be included on line 24a (travel); they go on line 24b instead. ([CG-MCE-003#S36](#s-CG-MCE-003-S36)) - See above: Amounts paid to rent or lease other property are entered on line 20b, separately from line 20a. ([CG-MCE-003#S37](#s-CG-MCE-003-S37)) - See above: Federal income taxes, including self-employment tax, are among the taxes that must not be deducted on line 23. ([CG-MCE-003#S38](#s-CG-MCE-003-S38)) - See above: Line 14 deducts contributions to employee benefit programs that are not an incidental part of a pension or profit-sharing plan reported on line 19. ([CG-MCE-003#S39](#s-CG-MCE-003-S39)) - See above: Each other expense must be listed separately, by type and amount, in the space provided, with the total entered on the summary lines. ([CG-MCE-003#S41](#s-CG-MCE-003-S41)) - See above: A filer who produced real or tangible personal property, or acquired real or personal property for resale, must generally capitalize certain expenses in inventory or other property rather than deduct them. ([CG-MCE-003#S42](#s-CG-MCE-003-S42)) - Line 25 deducts utility expenses only for the trade or business. _(jurisdiction: United States (federal income tax), entity_scope: Sole proprietors and others required to file Schedule C (Form 1040); includes single-member LLCs not treated as separate entities and qualified joint ventures, effective_from: 2025 tax year, effective_to: 2025 tax year)_ `CG-MCE-003#S43` > “Deduct utility expenses only for your trade or business.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Schedule C (Form 1040), Profit or Loss From Business](https://www.irs.gov/pub/irs-pdf/i1040sc.pdf), 2026-01-02; Specific Instructions — Line 25. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Items the partnership must state separately because they require separate computations by the partners are not reported on lines 9 through 21; examples include expenses incurred for the production of income instead of in a trade or business, charitable contributions, foreign taxes paid or accrued, intangible drilling and development costs, soil and water conservation expenditures, amortizable basis of reforestation expenditures, and exploration expenditures, whose distributive shares are reported separately to each partner on Schedule K-1. ([CG-MCE-003#S44](#s-CG-MCE-003-S44)) - See above: No section 179 expense deduction is included on line 16; that amount is not deducted by the partnership but is passed through to the partners in box 12 of Schedule K-1. ([CG-MCE-003#S46](#s-CG-MCE-003-S46)) - See above: Line 21 reports the total allowable trade or business deductions that are not deductible elsewhere on page 1 of Form 1065, with a statement attached listing by type and amount each deduction included on that line. ([CG-MCE-003#S47](#s-CG-MCE-003-S47)) - Line 16a reports only the depreciation claimed on assets used in a trade or business activity, and line 16b reports the depreciation included elsewhere on the return (for example, on page 1, line 2) that is attributable to assets used in trade or business activities. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S48` > “ more information on investment property. Line 16. Depreciation • Debt proceeds allocated to distributions made to partners On line 16a, enter only the depreciation claimed on assets used during the tax year. Instead, report such interest on in a trade or business activity. Enter on line 16b the depreciation Schedule K, line 13e, and in box 13 of Schedule K-1 using included elsewhere on the return (for example, on page 1, line 2) code AC. that is attributable to assets used in trade or business activities.” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Line 16. Depreciation (page 23). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: The fringe benefit expenditures described in the Line 7 instruction are also reported as wages in box 1 of Form W-2. ([CG-MCE-003#S49](#s-CG-MCE-003-S49)) - See above: Deductible officers' compensation is reported on Form 1120 line 12. ([CG-MCE-003#S50](#s-CG-MCE-003-S50)) _Not established from an authoritative source._ ## When one account genuinely belongs in two places - See above: Purchases reported on line 2 are reduced by items withdrawn for personal use. ([CG-MCE-003#S32](#s-CG-MCE-003-S32)) - See above: Contract labor includible on line 17, 21, 26, or 37 is excluded from line 11, and salaries are also not included there. ([CG-MCE-003#S33](#s-CG-MCE-003-S33)) - See above: Salaries and wages deducted elsewhere on the return, and amounts paid to the filer themself, must not be included on line 26. ([CG-MCE-003#S34](#s-CG-MCE-003-S34)) - See above: When actual vehicle expenses are deducted, depreciation is shown on line 13 and rent or lease payments on a separate line, not with the other line 9 vehicle costs. ([CG-MCE-003#S35](#s-CG-MCE-003-S35)) - See above: Amounts paid to rent or lease other property are entered on line 20b, separately from line 20a. ([CG-MCE-003#S37](#s-CG-MCE-003-S37)) - See above: Line 25 deducts utility expenses only for the trade or business. ([CG-MCE-003#S43](#s-CG-MCE-003-S43)) - See above: Line 16a reports only the depreciation claimed on assets used in a trade or business activity, and line 16b reports the depreciation included elsewhere on the return (for example, on page 1, line 2) that is attributable to assets used in trade or business activities. ([CG-MCE-003#S48](#s-CG-MCE-003-S48)) - See above: Deductible officers' compensation is reported on Form 1120 line 12. ([CG-MCE-003#S50](#s-CG-MCE-003-S50)) _Not established from an authoritative source._ ## Differences that stay, however well you map - A permanent difference arises where an item is in book income but never in taxable income, or vice versa, and does not reverse; a temporary difference results from timing differences that will reverse in one or more future periods. _(jurisdiction: United States, entity_scope: business generally)_ `CG-MCE-003#S84` > “A permanent difference arises when an item is included in book income but will never be included in taxable income, or vice versa, meaning the difference does not reverse in future periods. A temporary difference, by contrast, results from timing differences between financial reporting and tax recognition that will reverse in one or more future periods.” — [AccountingTools, Inc. — Permanent difference definition](https://www.accountingtools.com/articles/what-is-a-permanent-difference-in-tax-accounting.html), 2026-02-13; FAQs — How does a permanent difference differ from a temporary difference?. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A permanent difference is a business transaction reported differently for financial reporting and tax reporting purposes where the difference will never be eliminated. _(jurisdiction: United States, entity_scope: business generally)_ `CG-MCE-003#S85` > “A permanent difference is a business transaction that is reported differently for financial reporting and tax reporting purposes, and for which the difference will never be eliminated.” — [AccountingTools, Inc. — Permanent difference definition](https://www.accountingtools.com/articles/what-is-a-permanent-difference-in-tax-accounting.html), 2026-02-13; What is a Permanent Difference in Tax Accounting? — opening paragraph. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A company may record an asset or liability at one value for financial reporting purposes while maintaining a separate record of a different value for tax purposes. _(jurisdiction: United States, entity_scope: business generally)_ `CG-MCE-003#S90` > “A company may record an asset or liability at one value for financial reporting purposes, while maintaining a separate record of a different value for tax purposes.” — [AccountingTools, Inc. — Accounting for income taxes](https://www.accountingtools.com/articles/accounting-for-income-taxes.html), 2026-02-07; Temporary Differences. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Such book-versus-tax value differences are caused by the tax recognition policies of taxing authorities, which may require deferral or acceleration of certain items for tax reporting. _(jurisdiction: United States, entity_scope: business generally)_ `CG-MCE-003#S91` > “The difference is caused by the tax recognition policies of taxing authorities, who may require the deferral or acceleration of certain items for tax reporting purposes.” — [AccountingTools, Inc. — Accounting for income taxes](https://www.accountingtools.com/articles/accounting-for-income-taxes.html), 2026-02-07; Temporary Differences. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - These differences are temporary because the assets will eventually be recovered and the liabilities settled, at which point the differences terminate. _(jurisdiction: United States, entity_scope: business generally)_ `CG-MCE-003#S92` > “These differences are temporary, since the assets will eventually be recovered and the liabilities settled, at which point the differences will be terminated.” — [AccountingTools, Inc. — Accounting for income taxes](https://www.accountingtools.com/articles/accounting-for-income-taxes.html), 2026-02-07; Temporary Differences. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Under the cash receipts and disbursements method, items constituting gross income - whether cash, property or services - are generally included for the taxable year in which actually or constructively received, and expenditures are deducted for the taxable year in which actually made. _(jurisdiction: United States (federal), entity_scope: All taxpayers computing taxable income under chapter 1 of the Internal Revenue Code, accounting_basis: cash receipts and disbursements method)_ `CG-MCE-003#S93` > “Generally, under the cash receipts and disbursements method in the computation of taxable income, all items which constitute gross income (whether in the form of cash, property, or services) are to be included for the taxable year in which actually or constructively received. Expenditures are to be deducted for the taxable year in which actually made.” — [Office of the Federal Register / Government Publishing Office (eCFR), publishing Treasury/IRS Income Tax Regulations — 26 CFR 1.446-1 - General rule for methods of accounting](https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR9453c3e600b3f20/section-1.446-1), 2026-09-03; § 1.446-1(c)(1)(i) Cash receipts and disbursements method. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Under an accrual method, income is generally included for the taxable year when all events have occurred fixing the right to receive it and the amount can be determined with reasonable accuracy, and a liability is incurred in the taxable year in which all events have occurred establishing the fact of the liability, the amount can be determined with reasonable accuracy, and economic performance has occurred. _(jurisdiction: United States (federal), entity_scope: All taxpayers computing taxable income under chapter 1 of the Internal Revenue Code, accounting_basis: accrual method)_ `CG-MCE-003#S94` > “Generally, under an accrual method, income is to be included for the taxable year when all the events have occurred that fix the right to receive the income and the amount of the income can be determined with reasonable accuracy. (See § 1.451-1 for rules relating to the taxable year of inclusion.) Under such a method, a liability is incurred, and generally is taken into account for Federal income tax purposes, in the taxable year in which all the events have occurred that establish the fact of the liability, the amount of the liability can be determined with reasonable accuracy, and economic performance has occurred with respect to the liability.” — [Office of the Federal Register / Government Publishing Office (eCFR), publishing Treasury/IRS Income Tax Regulations — 26 CFR 1.446-1 - General rule for methods of accounting](https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR9453c3e600b3f20/section-1.446-1), 2026-09-03; § 1.446-1(c)(1)(ii)(A) Accrual method. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Except for deviations permitted or required by the special accounting treatments prescribed for special items, taxable income is to be computed under the method of accounting on the basis of which the taxpayer regularly computes income in keeping the books. _(jurisdiction: United States (federal), entity_scope: All taxpayers computing taxable income under chapter 1 of the Internal Revenue Code, conditions: Except for deviations permitted or required by special accounting treatment)_ `CG-MCE-003#S95` > “Except for deviations permitted or required by such special accounting treatment, taxable income shall be computed under the method of accounting on the basis of which the taxpayer regularly computes his income in keeping his books.” — [Office of the Federal Register / Government Publishing Office (eCFR), publishing Treasury/IRS Income Tax Regulations — 26 CFR 1.446-1 - General rule for methods of accounting](https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR9453c3e600b3f20/section-1.446-1), 2026-09-03; § 1.446-1(a)(1) General rule. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: Accounting records include the taxpayer's regular books of account and such other records and data as may be necessary to support the entries on the books of account and on the return; the example the regulation gives of such other records is a reconciliation of any differences between the books and the return. ([CG-MCE-003#S96](#s-CG-MCE-003-S96)) - Schedule M-1 is the reconciliation of income (loss) per books with the analysis of net income (loss) per return. _(jurisdiction: United States (federal income tax), entity_scope: Partnerships (including LLCs classified as partnerships for federal income tax purposes) filing Form 1065, effective_from: 2025 tax year)_ `CG-MCE-003#S97` > “ Schedule M-1. Reconciliation of • Stock in a mutual fund or other RIC that distributed Income (Loss) per Books With exempt-interest dividends during the tax year of the partnership. Analysis of Net Income (Loss) per Line 7a. Loans to Partners (or Persons Related Return” — [Internal Revenue Service, U.S. Department of the Treasury — 2025 Instructions for Form 1065, U.S. Return of Partnership Income](https://www.irs.gov/pub/irs-pdf/i1065.pdf), 2026-01-14; Schedule M-1 heading (page 62). Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Costs required to be capitalized under section 263A cannot be deducted until the corporation sells, uses, or otherwise disposes of the property to which they relate. _(jurisdiction: United States (federal), entity_scope: C corporations and other entities required to file Form 1120, effective_from: tax years beginning in 2025)_ `CG-MCE-003#S101` > “The corporation cannot deduct the costs required to be capitalized under section 263A until it sells, uses, or otherwise” — [Internal Revenue Service, U.S. Department of the Treasury — Instructions for Form 1120, U.S. Corporation Income Tax Return](https://www.irs.gov/pub/irs-pdf/i1120.pdf), 2025 tax year revision; Deductions — Limitations on Deductions / Uniform capitalization rules. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Required authority: authoritative professional or accounting standard. Highest achieved: high quality professional secondary reference, primary regulator or government._ ## Why the books and the return will not simply match - See above: A permanent difference arises where an item is in book income but never in taxable income, or vice versa, and does not reverse; a temporary difference results from timing differences that will reverse in one or more future periods. ([CG-MCE-003#S84](#s-CG-MCE-003-S84)) - See above: A permanent difference is a business transaction reported differently for financial reporting and tax reporting purposes where the difference will never be eliminated. ([CG-MCE-003#S85](#s-CG-MCE-003-S85)) - Permanent differences are caused by statutory requirements, so a transaction's permanent-difference status can change at any time if the government alters the tax code. _(jurisdiction: United States, entity_scope: business generally)_ `CG-MCE-003#S86` > “Permanent differences are caused by statutory requirements. This means that the permanent-difference status of a business transaction can change at any time, if the government elects to alter the tax code.” — [AccountingTools, Inc. — Permanent difference definition](https://www.accountingtools.com/articles/what-is-a-permanent-difference-in-tax-accounting.html), 2026-02-13; What is a Permanent Difference in Tax Accounting?. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - See above: A company may record an asset or liability at one value for financial reporting purposes while maintaining a separate record of a different value for tax purposes. ([CG-MCE-003#S90](#s-CG-MCE-003-S90)) - See above: Such book-versus-tax value differences are caused by the tax recognition policies of taxing authorities, which may require deferral or acceleration of certain items for tax reporting. ([CG-MCE-003#S91](#s-CG-MCE-003-S91)) - See above: These differences are temporary because the assets will eventually be recovered and the liabilities settled, at which point the differences terminate. ([CG-MCE-003#S92](#s-CG-MCE-003-S92)) - See above: Under the cash receipts and disbursements method, items constituting gross income - whether cash, property or services - are generally included for the taxable year in which actually or constructively received, and expenditures are deducted for the taxable year in which actually made. ([CG-MCE-003#S93](#s-CG-MCE-003-S93)) - See above: Under an accrual method, income is generally included for the taxable year when all events have occurred fixing the right to receive it and the amount can be determined with reasonable accuracy, and a liability is incurred in the taxable year in which all events have occurred establishing the fact of the liability, the amount can be determined with reasonable accuracy, and economic performance has occurred. ([CG-MCE-003#S94](#s-CG-MCE-003-S94)) - See above: Except for deviations permitted or required by the special accounting treatments prescribed for special items, taxable income is to be computed under the method of accounting on the basis of which the taxpayer regularly computes income in keeping the books. ([CG-MCE-003#S95](#s-CG-MCE-003-S95)) - See above: Accounting records include the taxpayer's regular books of account and such other records and data as may be necessary to support the entries on the books of account and on the return; the example the regulation gives of such other records is a reconciliation of any differences between the books and the return. ([CG-MCE-003#S96](#s-CG-MCE-003-S96)) - See above: Schedule M-1 is the reconciliation of income (loss) per books with the analysis of net income (loss) per return. ([CG-MCE-003#S97](#s-CG-MCE-003-S97)) - See above: Costs required to be capitalized under section 263A cannot be deducted until the corporation sells, uses, or otherwise disposes of the property to which they relate. ([CG-MCE-003#S101](#s-CG-MCE-003-S101)) _Required authority: authoritative professional or accounting standard. Highest achieved: high quality professional secondary reference, primary regulator or government._ ## Agreeing the mapping with whoever prepares the return - See above: Working papers are the member's property and the member is not required to make such information available; state and federal statutes and regulations and contractual agreements may impose additional requirements on the member. ([CG-MCE-003#S67](#s-CG-MCE-003-S67)) - A member should not ignore the implications of information furnished and should make reasonable inquiries if the information furnished appears to be incorrect, incomplete or inconsistent either on its face or on the basis of other facts known to the member. _(jurisdiction: United States (AICPA professional standards); the document states the SSTSs apply to all members providing tax services regardless of the jurisdictions in which they practice, entity_scope: AICPA members providing tax services; 'taxpayer' means a client, a member's employer, or any other third-party recipient of tax services, effective_from: 2024-01-01, conditions: Standard paragraph)_ `CG-MCE-003#S75` > “However, member may rely on information furnished by a member should not ignore the implications the taxpayer unless it appears to be incorrect, of information furnished and should make incomplete, or inconsistent. However, there is a reasonable inquiries if the information need to determine by inquiry that a specifically furnished appears to be incorrect, incomplete, required condition, such as maintaining books or inconsistent either on its face or on the basis and records or substantiating documentation, of other facts known to the member.” — [American Institute of Certified Public Accountants — Statements on Standards for Tax Services No. 1-4](https://assets.ctfassets.net/rb9cdnjh59cm/1S6dXMusOiDRA2mPBrHvYZ/9b28855184cc3a64c38b1572d3454107/statements-on-standards-for-tax-services-ssts-no-1-4.pdf), 2024-01-01; SSTS No. 2, section 2.3, Standard ¶2.3.2 and Explanations ¶2.3.6, printed page 20 — the pinned text line-interleaves the PDF's two printed columns, so this contiguous verbatim span also carries text from the facing column. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The preparer's declaration does not require a member to examine or verify supporting data, and a member may rely on information furnished by the taxpayer unless it appears to be incorrect, incomplete or inconsistent. _(jurisdiction: United States (AICPA professional standards); the document states the SSTSs apply to all members providing tax services regardless of the jurisdictions in which they practice, entity_scope: AICPA members providing tax services; 'taxpayer' means a client, a member's employer, or any other third-party recipient of tax services, effective_from: 2024-01-01, conditions: Explanations paragraph)_ `CG-MCE-003#S76` > “2.3.6. The preparer’s declaration does not require a on information furnished, without verification, member to examine or verify supporting data; a by the taxpayer or by third parties. However, member may rely on information furnished by a member should not ignore the implications the taxpayer unless it appears to be incorrect, of information furnished and should make incomplete, or inconsistent.” — [American Institute of Certified Public Accountants — Statements on Standards for Tax Services No. 1-4](https://assets.ctfassets.net/rb9cdnjh59cm/1S6dXMusOiDRA2mPBrHvYZ/9b28855184cc3a64c38b1572d3454107/statements-on-standards-for-tax-services-ssts-no-1-4.pdf), 2024-01-01; SSTS No. 2, section 2.3, Explanations ¶2.3.6, printed page 20 — the pinned text line-interleaves the PDF's two printed columns, so this contiguous verbatim span also carries text from the facing column. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A tax return is prepared based on the taxpayer's representation of facts, and the taxpayer has the final responsibility for positions taken on the return. _(jurisdiction: United States (AICPA professional standards); the document states the SSTSs apply to all members providing tax services regardless of the jurisdictions in which they practice, entity_scope: AICPA members providing tax services; 'taxpayer' means a client, a member's employer, or any other third-party recipient of tax services, effective_from: 2024-01-01, conditions: Explanations paragraph)_ `CG-MCE-003#S78` > “2.1.11. Our self-assessment tax system can function 2.1.7. When preparing or signing a tax return on effectively only if taxpayers file tax returns that which a tax return position is taken, a member are true, correct, and complete. A tax return is should, when relevant, advise the taxpayer prepared based on a taxpayer’s representation regarding potential penalty consequences of of facts, and the taxpayer has the final such tax return position and the opportunity, if responsibility for positions taken on the return.” — [American Institute of Certified Public Accountants — Statements on Standards for Tax Services No. 1-4](https://assets.ctfassets.net/rb9cdnjh59cm/1S6dXMusOiDRA2mPBrHvYZ/9b28855184cc3a64c38b1572d3454107/statements-on-standards-for-tax-services-ssts-no-1-4.pdf), 2024-01-01; SSTS No. 2, section 2.1, Explanations ¶2.1.11, printed page 17 — the pinned text line-interleaves the PDF's two printed columns, so this contiguous verbatim span also carries text from the facing column. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - The taxpayer has the ultimate responsibility for the contents of the return. _(jurisdiction: United States (AICPA professional standards); the document states the SSTSs apply to all members providing tax services regardless of the jurisdictions in which they practice, entity_scope: AICPA members providing tax services; 'taxpayer' means a client, a member's employer, or any other third-party recipient of tax services, effective_from: 2024-01-01, conditions: Explanations paragraph)_ `CG-MCE-003#S79` > “the taxpayer has the ultimate responsibility for condition regarding deductibility or other the contents of the return.” — [American Institute of Certified Public Accountants — Statements on Standards for Tax Services No. 1-4](https://assets.ctfassets.net/rb9cdnjh59cm/1S6dXMusOiDRA2mPBrHvYZ/9b28855184cc3a64c38b1572d3454107/statements-on-standards-for-tax-services-ssts-no-1-4.pdf), 2024-01-01; SSTS No. 2, section 2.3, Explanations ¶2.3.6, printed page 20 — the pinned text line-interleaves the PDF's two printed columns, so this contiguous verbatim span also carries text from the facing column. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - There is a need to determine by inquiry that a specifically required condition, such as maintaining books and records or substantiating documentation, has been satisfied. _(jurisdiction: United States (AICPA professional standards); the document states the SSTSs apply to all members providing tax services regardless of the jurisdictions in which they practice, entity_scope: AICPA members providing tax services; 'taxpayer' means a client, a member's employer, or any other third-party recipient of tax services, effective_from: 2024-01-01, conditions: Explanations paragraph; applies to conditions that are specifically required)_ `CG-MCE-003#S80` > “there is a reasonable inquiries if the information need to determine by inquiry that a specifically furnished appears to be incorrect, incomplete, required condition, such as maintaining books or inconsistent either on its face or on the basis and records or substantiating documentation, of other facts known to the member. A member has been satisfied” — [American Institute of Certified Public Accountants — Statements on Standards for Tax Services No. 1-4](https://assets.ctfassets.net/rb9cdnjh59cm/1S6dXMusOiDRA2mPBrHvYZ/9b28855184cc3a64c38b1572d3454107/statements-on-standards-for-tax-services-ssts-no-1-4.pdf), 2024-01-01; SSTS No. 2, section 2.3, Explanations ¶2.3.6, printed page 20 — the pinned text line-interleaves the PDF's two printed columns, so this contiguous verbatim span also carries text from the facing column. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - A member should make use of a taxpayer's returns for one or more prior years in preparing the current return whenever feasible, because reference to prior returns and discussion of prior-year tax determinations with the taxpayer often provides information to determine the taxpayer's general tax status, avoid the omission or duplication of items, and afford a basis for the treatment of similar or related transactions. _(jurisdiction: United States (AICPA professional standards); the document states the SSTSs apply to all members providing tax services regardless of the jurisdictions in which they practice, entity_scope: AICPA members providing tax services; 'taxpayer' means a client, a member's employer, or any other third-party recipient of tax services, effective_from: 2024-01-01, conditions: Explanations paragraph)_ `CG-MCE-003#S81` > “2.3.9. A member should make use of a taxpayer’s examine underlying documentation, returns for one or more prior years in preparing a member should encourage the taxpayer the current return whenever feasible. Reference to provide supporting data where appropriate. to prior returns and discussion of prior-year tax For example, a member should encourage determinations with the taxpayer often provides the taxpayer to submit underlying documents information to determine the taxpayer’s general for use in tax return preparation to permit tax status, avoid the omission or duplication full consideration of income and deductions of items, and afford a basis for the treatment arising from security transactions and from of similar or related transactions.” — [American Institute of Certified Public Accountants — Statements on Standards for Tax Services No. 1-4](https://assets.ctfassets.net/rb9cdnjh59cm/1S6dXMusOiDRA2mPBrHvYZ/9b28855184cc3a64c38b1572d3454107/statements-on-standards-for-tax-services-ssts-no-1-4.pdf), 2024-01-01; SSTS No. 2, section 2.3, Explanations ¶2.3.9, printed page 21 — the pinned text line-interleaves the PDF's two printed columns, so this contiguous verbatim span also carries text from the facing column. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Where the member applies the General Requirements for Performing Nonattest Services, independence would not be impaired and, for example, a member may record transactions to an attest client's general ledger when management has determined or approved the account classifications for the transaction. _(jurisdiction: United States, entity_scope: AICPA members in public practice performing nonattest services for an attest client, conditions: the client is an attest client of the member; member is applying the Independence Rule [1.200.001])_ `CG-MCE-003#S82` > “If the member applies the “General Requirements for Performing Nonattest Services” interpretation [1.295.040] of the “Independence Rule” [1.200.001], threats would be at an acceptable level and independence would not be impaired. For example, a member may a. record transactions to an attest client’s general ledger when management has determined or approved the account classifications for the transaction.” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.295.120 Bookkeeping, Payroll, and Other Disbursements, .02a. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ - Independence would be impaired, with no safeguards able to reduce the threats to an acceptable level, if the member determines or changes journal entries, any account coding or classification of transactions, or any other accounting records without first obtaining the attest client's approval. _(jurisdiction: United States, entity_scope: AICPA members in public practice performing nonattest services for an attest client, conditions: the client is an attest client of the member; member is applying the Independence Rule [1.200.001])_ `CG-MCE-003#S83` > “However, threats to compliance with the “Independence Rule” [1.200.001] would not be at an acceptable level and could not be reduced to an acceptable level by the application of safeguards, and independence would be impaired, if, for example, a member a. determines or changes journal entries, any account coding or classification of transactions, or any other accounting records without first obtaining the attest client’s approval.” — [American Institute of Certified Public Accountants — AICPA Code of Professional Conduct](https://pub.aicpa.org/codeofconduct/ethicsresources/et-cod.pdf), 2026-07; 1.295.120 Bookkeeping, Payroll, and Other Disbursements, .03a. Verified 2026-09-08. _Flagged for professional review — a bookkeeper or accountant should confirm this applies to your situation._ _Partly established. Established: what they are being asked to confirm (S80). Missing: how the mapping is agreed with whoever prepares the return; when in the year that conversation has to happen to be useful._ ## What your preparer relies on, and what they keep - See above: For this interpretation, "working papers" are all other items prepared solely for purposes of the engagement, including items prepared by the member (such as audit programs, analytical review schedules, and statistical sampling results and analyses) and items prepared by the client at the member's request reflecting testing or other work done by the member. ([CG-MCE-003#S66](#s-CG-MCE-003-S66)) - See above: Working papers are the member's property and the member is not required to make such information available; state and federal statutes and regulations and contractual agreements may impose additional requirements on the member. ([CG-MCE-003#S67](#s-CG-MCE-003-S67)) - See above: For this interpretation, "member-prepared records" are accounting or other records the member was not specifically engaged to prepare that are not in the client's books and records or otherwise not available to the client, rendering the client's financial information incomplete; the stated examples are adjusting, closing, combining or consolidating journal entries (with supporting computations) and supporting schedules and documents the member proposed or prepared as part of an engagement. ([CG-MCE-003#S68](#s-CG-MCE-003-S68)) - See above: On an initial request for client-provided records the member should make those records in the member's custody or control available to the person or entity that provided them; a reasonable fee may be charged for time and expense to retrieve, copy and ship them, but client-provided records may not be withheld for nonpayment of those fees. ([CG-MCE-003#S70](#s-CG-MCE-003-S70)) - See above: Once a member has complied, the member is under no ethical obligation to retain records for periods exceeding applicable professional standards, state and federal statutes and regulations, and contractual agreements relating to the service performed. ([CG-MCE-003#S71](#s-CG-MCE-003-S71)) - See above: Records of the client do not include any return, claim for refund, schedule, affidavit, appraisal or any other document prepared by the practitioner or the practitioner's firm, employees or agents if the practitioner is withholding such document pending the client's performance of its contractual obligation to pay fees with respect to such document. ([CG-MCE-003#S73](#s-CG-MCE-003-S73)) - See above: A member should not ignore the implications of information furnished and should make reasonable inquiries if the information furnished appears to be incorrect, incomplete or inconsistent either on its face or on the basis of other facts known to the member. ([CG-MCE-003#S75](#s-CG-MCE-003-S75)) - See above: The preparer's declaration does not require a member to examine or verify supporting data, and a member may rely on information furnished by the taxpayer unless it appears to be incorrect, incomplete or inconsistent. ([CG-MCE-003#S76](#s-CG-MCE-003-S76)) - See above: A tax return is prepared based on the taxpayer's representation of facts, and the taxpayer has the final responsibility for positions taken on the return. ([CG-MCE-003#S78](#s-CG-MCE-003-S78)) - See above: The taxpayer has the ultimate responsibility for the contents of the return. ([CG-MCE-003#S79](#s-CG-MCE-003-S79)) - See above: There is a need to determine by inquiry that a specifically required condition, such as maintaining books and records or substantiating documentation, has been satisfied. ([CG-MCE-003#S80](#s-CG-MCE-003-S80)) - See above: A member should make use of a taxpayer's returns for one or more prior years in preparing the current return whenever feasible, because reference to prior returns and discussion of prior-year tax determinations with the taxpayer often provides information to determine the taxpayer's general tax status, avoid the omission or duplication of items, and afford a basis for the treatment of similar or related transactions. ([CG-MCE-003#S81](#s-CG-MCE-003-S81)) - See above: Where the member applies the General Requirements for Performing Nonattest Services, independence would not be impaired and, for example, a member may record transactions to an attest client's general ledger when management has determined or approved the account classifications for the transaction. ([CG-MCE-003#S82](#s-CG-MCE-003-S82)) - See above: Independence would be impaired, with no safeguards able to reduce the threats to an acceptable level, if the member determines or changes journal entries, any account coding or classification of transactions, or any other accounting records without first obtaining the attest client's approval. ([CG-MCE-003#S83](#s-CG-MCE-003-S83)) _Partly established. Established: whether a mapping held in the preparer's own working papers is retained by and accessible to the business (S67); what the preparer relies on from the client's classification (S76, S78). Missing: what the preparer is in a position to confirm about a mapping the client maintains; at what point in the preparation cycle for the business return such a mapping can still be accepted and applied._ ## Not yet fully established from an authoritative source - Establish, for each common US small-business form, which return reports its business results and what set of income and expense categories that return presents, so a mapping can be built against the correct set. Establish also whether that reporting obligation reaches how the business's own ledger accounts are structured or stops at the categories the return presents, stating explicitly where the reporting rules impose no requirement on the structure of the chart. _(not established)_ - Establish whether mainstream small-business accounting software provides a feature that assigns accounts to reported categories, what that feature does with the assignment, and what it produces at year end. _(not established)_ - Establish the classes of difference between amounts recorded in a set of books and amounts reported on the business's return that persist regardless of how accounts are mapped. _(established; below the required authority class)_ - Establish which classes of business cost the return reports separately or treats distinctly, such that a single blended ledger account cannot be reported from without being taken apart. _(not established)_ - Establish the professional conventions governing an external return preparer's working papers and their use of a client's account classification: whether a mapping held in the preparer's own working papers is retained by and accessible to the business, what the preparer relies on from the client's classification and what they are in a position to confirm about a mapping the client maintains, and at what point in the preparation cycle for the business return such a mapping can still be accepted and applied. _(partly established)_ - Establish what a small business's chart of accounts is built to serve - the operating and management information the business itself runs on - what conventionally determines its account structure, and what management use is lost when a chart is restructured to follow an external reporting layout instead. _(partly established; below the required authority class)_ - Establish the relationship between the two structures: the ledger serves the business's own management needs and the return reports on defined categories, and the alignment between them is a maintained mapping rather than a redesign of the chart into the return's shape. _(established; below the required authority class)_ - Establish that the set of reported categories depends on which return the business files, and that the form the business takes determines which return that is, so the mapping target must be identified before any account is assigned. _(partly established)_ - Specify how the mapping is constructed and where it is held - within the software's own mapping feature, in a maintained schedule alongside the chart, or in the preparer's workpapers - and what each choice costs in durability and visibility. _(partly established)_ - Establish which classes of cost the return reports separately or treats distinctly, such that they must occupy their own accounts rather than sit inside a general account, and explain what happens at year end when they do not. _(not established)_ - Establish the classes of difference between the books and the return that persist regardless of how well the accounts are mapped, and establish that the correct handling is to leave them visible and explainable rather than to adjust the ledger to remove them. _(established; below the required authority class)_ - Establish the maintenance rule that a new account is mapped at the moment it is created, and the review that confirms the mapping is complete before the books are handed over. _(partly established)_ - Establish the completeness check: every active account is assigned to a reported category or explicitly marked as not reported, and every reported category can be traced back to the accounts that feed it. _(partly established)_ - Establish how the mapping is agreed with whoever prepares the return, what they are being asked to confirm, and when in the year that conversation has to happen to be useful. _(partly established)_ - Establish what to do with an account whose contents genuinely span two reported categories, including whether to split the account, add subaccounts, or carry a documented allocation. _(not established)_ ## Related - [How do I set up a chart of accounts for my small business, and what accounts should it contain?](https://uppago.com/resources/how-do-i-set-up-a-chart-of-accounts-for-my-small-business-and-what-accounts) _Reference date 2026-09-07. Statements are quoted verbatim from their sources; scope and verification dates are shown on each._