My prior-year numbers in the books no longer match what was filed or what my accountant had - how do I find what changed and fix it?

What actually makes a closed prior year drift

A Customize control on the Adjusted Trial Balance report can be used to modify the report's layout or data as needed; the article does not name which specific settings are available. (jurisdiction: United States (quickbooks.intuit.com en-US help edition), entity_scope: Accountant running the Adjusted Trial Balance report in QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: US (en-US) help article, updated 8/3/2026, effective_from: 2026-08-03, conditions: customization described only as "as needed"; no accounting basis, as-of date or filter setting is named in this document)

“Select Customize to modify the report layout or data as needed.”

QuickBooks Online offers an Exceptions to Closing Date report that a user can use to see changes made after the books were closed. (jurisdiction: United States (en-US QuickBooks help edition), entity_scope: QuickBooks Online company reports, platform: QuickBooks Online, effective_from: 2026-08-05, conditions: article states the report shows changes made after closing the books; it does not state the report's fields, completeness or refresh frequency)

“You can use an Exceptions to Closing Date report to see any changes made after you close your books.”

In the version comparison, any field that was modified, added or deleted is highlighted in yellow, green and red respectively, so field-level differences between the two selected versions are visible. (jurisdiction: United States (page served as the US-EN edition of the Zoho Books help site), entity_scope: Fields of a transaction being compared across two versions in a Zoho Books organization, platform: Zoho Books, platform_edition: US (US-EN) edition, undated FAQ page, conditions: Two versions of the transaction have been selected and compared; Viewer must be an Admin in the organization)

“Any field that was modified, added or deleted will be highlighted in yellow, green and red respectively.”

The documented adjusting journal entry procedure records the adjustment within the client's own QuickBooks Online company file. (jurisdiction: United States (quickbooks.intuit.com en-US help edition), entity_scope: Accountant working in a client's QuickBooks Online company file via QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: US (en-US) help article, updated 8/3/2026, effective_from: 2026-08-03, conditions: requires an active client company file)

“To record an adjustment within a client’s QuickBooks Online company file, follow these steps:”

Not established from an authoritative source.

Required authority: authoritative professional or accounting standard, official platform documentation. Highest achieved: official platform documentation.

Narrowing the difference from one total down to specific accounts

QuickBooks Online Accountant offers an Adjusted Trial Balance report for reviewing adjusting journal entries; it lists all general ledger account balances before and after the adjusting journal entries are made, and also lists the total adjusting entries. (jurisdiction: United States (quickbooks.intuit.com en-US help edition), entity_scope: Accountant reviewing a client's QuickBooks Online company file, platform: QuickBooks Online Accountant, platform_edition: US (en-US) help article, updated 8/3/2026, effective_from: 2026-08-03)

“Run an Adjusted Trial Balance Report to review your adjusting journal entries. This report lists all account balances in the general ledger before and after you make adjusting journal entries. It also lists the total adjusting entries.”

After the entry is saved, the Adjusted Trial Balance report shows the new adjusting entry and lists all general ledger account balances before and after adjustments; it can also be used as a general ledger report. (jurisdiction: United States (quickbooks.intuit.com en-US help edition), entity_scope: Accountant reviewing a client's QuickBooks Online company file, platform: QuickBooks Online Accountant, platform_edition: US (en-US) help article, updated 8/3/2026, effective_from: 2026-08-03)

“The Adjusted Trial Balance report shows your new adjusting entry. You can also use this as a general ledger report. It lists all account balances in the general ledger before and after adjustments.”

Not established from an authoritative source.

Using the change history to find what was altered after the fact

See QuickBooks Online offers an Exceptions to Closing Date report that a user can use to see changes made after the books were closed.

The Exceptions to Closing Date report is reached from Reports, then Standard reports. (jurisdiction: United States (en-US QuickBooks help edition), entity_scope: QuickBooks Online reports area, platform: QuickBooks Online, effective_from: 2026-08-05)

“Go to Reports , then Standard reports ( Take me there ).”

Within Standard reports, the user finds the report by entering "Exceptions to Closing Date" in the search field and opening it. (jurisdiction: United States (en-US QuickBooks help edition), entity_scope: QuickBooks Online Standard reports list, platform: QuickBooks Online, effective_from: 2026-08-05)

“In the search field, enter Exceptions to Closing Date and open the report.”

Zoho Books says its Audit Trail lets a user find out how, when and who modified a transaction; the page does not say it captures anything beyond those, nor that the list is exhaustive. (jurisdiction: United States (page served as the US-EN edition of the Zoho Books help site), entity_scope: Transactions within a Zoho Books organization, platform: Zoho Books, platform_edition: US (US-EN) edition, undated FAQ page, conditions: Viewer must be an Admin in the organization)

“Zoho Books lets you view Audit Trail, through which you can find out how, when and who modified a transaction.”

Zoho Books provides an 'Activity Logs & Audit Trail' report on whose page a user can view the activities that took place during a certain period. (jurisdiction: United States (page served as the US-EN edition of the Zoho Books help site), entity_scope: Activities recorded in a Zoho Books organization, platform: Zoho Books, platform_edition: US (US-EN) edition, undated FAQ page, conditions: Viewer must be an Admin in the organization; Activities are shown for a selected period)

“Now, click Activity Logs & Audit Trail report. In this page, you can view the activities taken place during a certain period.”

Clicking View Audit Trail fetches the current version of the transaction together with a list of all the previous versions, shown on the right. (jurisdiction: United States (page served as the US-EN edition of the Zoho Books help site), entity_scope: An individual transaction in a Zoho Books organization, platform: Zoho Books, platform_edition: US (US-EN) edition, undated FAQ page, conditions: Reached via View Audit Trail on an activity in the Activity Logs & Audit Trail report; Viewer must be an Admin in the organization)

“This will fetch the current version of the transaction along with a list of all the previous versions on the right.”

See In the version comparison, any field that was modified, added or deleted is highlighted in yellow, green and red respectively, so field-level differences between the two selected versions are visible.

Partly established. Established: how the software's change history is read to attribute the drift to specific post-close actions (S05, S10). Missing: what the change history does not capture; where that leaves the investigation.

Altered after the fact, or never agreed because the adjustments were never entered

See QuickBooks Online Accountant offers an Adjusted Trial Balance report for reviewing adjusting journal entries; it lists all general ledger account balances before and after the adjusting journal entries are made, and also lists the total adjusting entries.

See After the entry is saved, the Adjusted Trial Balance report shows the new adjusting entry and lists all general ledger account balances before and after adjustments; it can also be used as a general ledger report.

See The documented adjusting journal entry procedure records the adjustment within the client's own QuickBooks Online company file.

QuickBooks Online Accountant marks a journal entry as adjusting by way of an "Is Adjusting Journal Entry?" checkbox selected while creating the journal entry. (jurisdiction: United States (quickbooks.intuit.com en-US help edition), entity_scope: Accountant creating a journal entry in a client's QuickBooks Online company file, platform: QuickBooks Online Accountant, platform_edition: US (en-US) help article, updated 8/3/2026, effective_from: 2026-08-03)

“Select the Is Adjusting Journal Entry? checkbox”

Not established from an authoritative source.

Required authority: authoritative professional or accounting standard. Highest achieved: official platform documentation.

Deciding which record governs: the filed figures, the adjusted trial balance or the books

Not established from an authoritative source.

What a finished tie-out looks like

Not established from an authoritative source.

The correcting entries and the explanation that goes with each one

Not established from an authoritative source.

Locking the period once it agrees, and who can still change it

QuickBooks Online's lock-your-books feature is presented as a way to stop changes to past transactions, which the article says helps keep financial data accurate for tax filings, audits and reports. (jurisdiction: United States (QuickBooks Online US, en-us help article), entity_scope: QuickBooks Online company files, platform: QuickBooks Online, platform_edition: US (en-us) help article, updated 8/5/2026, conditions: stated as a benefit ('helps keep'), not a guarantee)

“Lock your books to stop changes to past transactions. This helps keep your financial data accurate for tax filings, audits, and reports.”

The other documented security option, 'Allow changes after viewing a warning and entering password', requires users to enter a password to make changes, which the article describes as better security. (jurisdiction: United States (QuickBooks Online US, en-us help article), entity_scope: QuickBooks Online company files, platform: QuickBooks Online, platform_edition: US (en-us) help article, updated 8/5/2026, conditions: applies when this option is the one selected; the article does not say who holds or sets the password)

“Allow changes after viewing a warning and entering password : Users must enter a password to make changes. This is for better security.”

For year-end adjustments, the lock date can be set in settings after accounts have been reviewed and reconciled. (jurisdiction: United States (QuickBooks Online US, en-us help article), entity_scope: QuickBooks Online company files, platform: QuickBooks Online, platform_edition: US (en-us) help article, updated 8/5/2026, conditions: stated as something the user can do, not as a requirement)

“After you review and reconcile your accounts, you can set the lock date in your settings.”

To edit the closing date or the closing-date password in QuickBooks Online the user must be signed in as a primary admin or company admin, and the article states that only admins can make these changes. (jurisdiction: United States (en-US QuickBooks help edition), entity_scope: QuickBooks Online company; user roles primary admin and company admin, platform: QuickBooks Online, effective_from: 2026-08-05, conditions: applies to editing the closing date or closing-date password as described in this article)

“Before you start, sign in to QuickBooks Online as a primary admin or company admin . Only admins can make these changes.”

Zoho Books provides a Transaction Locking feature that helps freeze transactions for a specified period; once transactions are locked, transactions recorded before the specified lock date cannot be added, modified or deleted. (jurisdiction: United States (Zoho Books US edition help, US-EN), entity_scope: Zoho Books organizations, platform: Zoho Books, platform_edition: US edition (US-EN), current release; page lists Standard, Professional, Premium, Elite and Ultimate plans, conditions: applies to transactions recorded before the specified lock date)

“At the end of your accounting period, you may want to prevent the creation or modification of transactions that could affect your accounts. Transaction Locking in Zoho Books helps you freeze transactions for a specified period. Once transactions are locked, they cannot be added, modified, or deleted if recorded before the specified lock date.”

Locked transactions can be unlocked, which the document describes as done once a new accounting period starts in order to enter data. (jurisdiction: United States (Zoho Books US edition help, US-EN), entity_scope: Zoho Books organizations, platform: Zoho Books, platform_edition: US edition (US-EN), current release)

“Once you start a new accounting period, you can unlock the locked transactions to enter your data.”

Transactions can be unlocked for a specific date-range period instead of unlocking all locked transactions. (jurisdiction: United States (Zoho Books US edition help, US-EN), entity_scope: Zoho Books organizations, platform: Zoho Books, platform_edition: US edition (US-EN), current release)

“You can unlock transactions for a specific period instead of unlocking all locked transactions in Zoho Books. For example, you can choose to unlock all transactions between 11 July 2025 and 11 October 2025.”

Once partial unlocking is disabled, the locked transactions can no longer be modified. (jurisdiction: United States (Zoho Books US edition help, US-EN), entity_scope: Zoho Books organizations, platform: Zoho Books, platform_edition: US edition (US-EN), current release, conditions: partial unlocking disabled)

“You will not be able to modify the locked transactions once you disable partial unlocking.”

Partly established. Established: the locking or closing control applied once agreement is restored (S20); who retains the ability to change the period afterwards (S21). Missing: why that control is part of the fix rather than an optional extra.

Working it through with the accountant who produced the earlier figures

Not established from an authoritative source.

The prior-period reports your software can produce, and the settings that change what they return

See QuickBooks Online Accountant offers an Adjusted Trial Balance report for reviewing adjusting journal entries; it lists all general ledger account balances before and after the adjusting journal entries are made, and also lists the total adjusting entries.

See After the entry is saved, the Adjusted Trial Balance report shows the new adjusting entry and lists all general ledger account balances before and after adjustments; it can also be used as a general ledger report.

The Adjusted Trial Balance report is selected from the standard reports list, or may be located using the search bar. (jurisdiction: United States (quickbooks.intuit.com en-US help edition), entity_scope: Accountant using QuickBooks Online Accountant, platform: QuickBooks Online Accountant, platform_edition: US (en-US) help article, updated 8/3/2026, effective_from: 2026-08-03)

“Select the Adjusted Trial Balance report, or locate it using the search bar.”

See A Customize control on the Adjusted Trial Balance report can be used to modify the report's layout or data as needed; the article does not name which specific settings are available.

Not established from an authoritative source.

What the software's change history records about a post-close alteration

See Zoho Books says its Audit Trail lets a user find out how, when and who modified a transaction; the page does not say it captures anything beyond those, nor that the list is exhaustive.

See Clicking View Audit Trail fetches the current version of the transaction together with a list of all the previous versions, shown on the right.

Zoho Books creates a new version of a transaction when changes are made to that transaction; the page does not qualify this by period status. (jurisdiction: United States (page served as the US-EN edition of the Zoho Books help site), entity_scope: Transactions in a Zoho Books organization, platform: Zoho Books, platform_edition: US (US-EN) edition, undated FAQ page, conditions: Applies when changes are made to a transaction)

“Note: A new version of a transaction is created when changes are made to the transaction.”

See In the version comparison, any field that was modified, added or deleted is highlighted in yellow, green and red respectively, so field-level differences between the two selected versions are visible.

Partly established. Established: which fields the change history captures (S08, S12). Missing: which actions appear in a mainstream accounting platform's change history for alterations made after a period was closed; what the change history cannot show.

The professional expectation for tying client books to the figures used for the return

Partly established. Established: the return path of the accountant's adjusting entries (S13). Missing: the professional expectation for reconciling a client's books to the trial balance or adjusted figures used to prepare a return; the role of the accountant's adjusting entries; the support and explanation expected to accompany each entry made to bring the books back into agreement.

Required authority: authoritative professional or accounting standard. Highest achieved: official platform documentation.

What the tax authority expects of books supporting figures already filed

Not established from an authoritative source.

The period-locking control your platform provides, and what it prevents

Locking the books in QuickBooks Online works by setting a lock date, and transactions dated on or before that date cannot be changed without approval. (jurisdiction: United States (QuickBooks Online US, en-us help article), entity_scope: QuickBooks Online company files, platform: QuickBooks Online, platform_edition: US (en-us) help article, updated 8/5/2026, conditions: boundary is a single date; the article does not say what 'approval' consists of beyond the security options it later lists)

“When you lock your books, you set a lock date. You can’t change any transactions on or before that date without approval.”

The control is enabled by turning on a setting named 'Close the books'. (jurisdiction: United States (QuickBooks Online US, en-us help article), entity_scope: QuickBooks Online company files, platform: QuickBooks Online, platform_edition: US (en-us) help article, updated 8/5/2026)

“Turn on Close the books”

See To edit the closing date or the closing-date password in QuickBooks Online the user must be signed in as a primary admin or company admin, and the article states that only admins can make these changes.

See Zoho Books provides a Transaction Locking feature that helps freeze transactions for a specified period; once transactions are locked, transactions recorded before the specified lock date cannot be added, modified or deleted.

Zoho Books allows transactions to be locked either by individual module or for all transactions at once. (jurisdiction: United States (Zoho Books US edition help, US-EN), entity_scope: Zoho Books organizations, platform: Zoho Books, platform_edition: US edition (US-EN), current release)

“Zoho Books allows you to lock transactions by individual modules or lock all transactions at once”

The lock boundary is a Lock Date selected when locking a module, and transactions recorded before that date cannot be modified or deleted. (jurisdiction: United States (Zoho Books US edition help, US-EN), entity_scope: Zoho Books organizations, platform: Zoho Books, platform_edition: US edition (US-EN), current release, conditions: module has been locked with a Lock Date)

“The transactions recorded before this date cannot be modified or deleted.”

See Locked transactions can be unlocked, which the document describes as done once a new accounting period starts in order to enter data.

Not established from an authoritative source.