You sit down with September’s bank statement, ready to finish the books. August balanced. Now QuickBooks says the beginning balance is off—before you’ve checked a single September transaction.
Start by separating two questions: is the starting point wrong, or does this month’s activity fail to match? That distinction can save a contractor, shop owner, or seasonal business operator from searching an entire statement for a problem left over from an earlier month.
Put three numbers beside each other
Gather the current bank statement, the previous statement, and the previous reconciliation report. Confirm they refer to the same account and consecutive statement periods. Write down the previous statement’s ending balance, the current statement’s beginning balance, and the beginning balance QuickBooks is using.
For a made-up checking-account example, suppose both bank figures are $8,450, but QuickBooks starts at $8,725. Your starting point is $275 too high: $8,725 − $8,450 = $275. That gives you a search target; it does not prove which transaction is wrong. Several changes can produce the same net difference.
To find the saved report in QuickBooks Online, open Reports → Standard reports, search for Reconciliation Report, then choose the account and period and select View Report. It records the balances and which entries were cleared or left uncleared at that reconciliation. It is static: later edits to the books do not rewrite that saved report. Keep a copy with the statements. Intuit: Reconciliation reports.
Follow the changed-transaction trail
For an account reconciled before, an edited, deleted, moved, voided, or unreconciled entry can change the next beginning balance. In All apps → Accounting → Reconcile, select the account and use We can help you fix it on the beginning-balance alert.
Inspect What happened, then Review in tray or View History. Compare the change with your statement and supporting record. Correct only an error; an intentional accounting correction should not be reversed just to restore an old number. Menu labels may differ.
If the report is clear but the mismatch remains, investigate deleted or voided entries in the audit log and transactions marked reconciled outside the normal reconciliation process.
When a verified correction requires reconciling an individual entry, Intuit allows marking it R in the register or reconciling again with the previous ending date and balance. Only the latter records the change on a reconciliation report. Do not apply either method to an unverified entry.
Confirm the discrepancy total is $0.00 and the beginning balance agrees with the statement before proceeding. This workflow is for previously reconciled accounts; first-time setup requires a separate opening-balance check. Intuit: Beginning-balance troubleshooting.
Use the audit log to answer “what changed?”
An admin can open Settings → Audit log → Filter, narrow by user, date, or event, and select Apply. Use View in the History column to inspect an entry. Search the dates when changes could have happened, not only the transaction’s original month. An August payment might have been edited in September.
The log can show original details and the user and date of a change. A “System Administration” entry can reflect automated or connected-app activity; it does not by itself identify a person making an error. Intuit says audit-log events remain available for two years. Intuit: Using the audit log.
Keep a short correction record
For each finding, write down the transaction, what changed, the evidence supporting the correction, and the action taken. In our example, finding a $275 item is a lead, not permission to change it. Check its date, account, amount, and history against the bank record first.
Avoid creating a $275 miscellaneous expense or changing an opening balance merely to make the warning disappear. That would supply a number without explaining the underlying event. If several months are affected, a payroll entry is involved, or the change touches records already used for a tax return, gather the evidence and have your bookkeeper or accountant determine the correction before editing.
For next month, agree on who handles changes to reconciled periods. Leave that person a note when an older transaction needs attention, retain statement/report pairs, and document completed corrections. This gives everyone a way to fix real mistakes without another round of guesswork.
If you can identify the affected account but cannot untangle its history, Dells Bookkeeping offers catch-up and cleanup work. Tell us which account and periods are affected; we can discuss the scope before getting started. You do not need to solve the mystery before asking for help.
Sources and scope
QuickBooks Online guidance checked September 19, 2026; the linked Intuit guides cover beginning balances, reconciliation reports, and audit logs. Figures above are illustrative. This is not a QuickBooks Desktop walkthrough.
Topic research included an owner’s reconciliation mismatch after a previously balanced month and a discussion of a small beginning-balance discrepancy. These individual experiences informed the topic, not the software instructions or a claim about how often this happens.