Month-End Close Checklist: How to Reconcile Balance Sheet Accounts Faster
A practical checklist for finance teams to close the books accurately every month, with a focus on prepayments, accruals, and GL reconciliation.
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Month-End Close5 min read21 March 2026
What to Do When You Find an Error After the Close Is Signed Off
Finding a mistake after the books are closed is stressful — but there is a right way to handle it. Here is how to assess, correct, and document the fix.
Every finance team will eventually close the books only to discover later that something was wrong. A prepayment not amortized. An accrual reversed twice. A journal entry with the wrong GL code. The first instinct is often to panic — but the correct response is methodical.
Step 1: Assess Materiality
Not every error requires a prior period correction. The first question is whether the error is material — whether it would change the decision-making of someone reading the financial statements. Immaterial errors can typically be corrected in the current period without amending the prior period.
Step 2: Determine Whether to Reopen the Period
If the error is material, you will need to reopen the prior period, post a correcting entry, and re-sign off the close. If the accounting system has been locked, this requires access from the controller or CFO. Document clearly what was changed and why.
For immaterial errors: post a correcting entry in the current period and note it in the period commentary. This is the most common approach for small prepayment or accrual errors found in the following month.
Step 3: Post the Correcting Entry
The correcting entry should reverse the effect of the error and post the correct treatment. Include a clear reference to the original entry in the journal narration so anyone reviewing later can trace the history.
Step 4: Document and Communicate
Record the error, its cause, and how it was corrected. If the error was material enough to affect previously issued reports, notify the relevant stakeholders and reissue the affected statements. Audit trail documentation is important — both for external auditors and for your own institutional memory.
Step 5: Fix the Root Cause
The most important step is understanding why the error happened and preventing it from recurring. Was a prepayment entered with the wrong coverage date? Was an accrual reversed manually when it should have been managed automatically? The answer shapes whether you need a process change, a policy update, or a better tool.
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