Month End Close Checklist Checklist

Closing the month means reaching a point after which the period stops changing. Before close, every figure is provisional. After close, the numbers are final and you can report from them.

Most small businesses never close. They categorise continuously, produce reports on demand, and those reports change every time they are run because prior periods are still moving. That is the difference between having books and having answers.

Before you start

• All transactions entered for the period, including anything paid personally
• All customer invoices raised for work completed
• All supplier bills received and entered
• Receipts captured for anything that needs supporting

Reconcile

• Every bank account to its statement
• Every credit card to its statement
• Every loan and finance agreement to the lender statement, with principal and interest split correctly
• Merchant and payment processor accounts, including fees
• Accounts receivable control to the AR aging
• Accounts payable control to the AP aging
• Payroll liabilities to what was actually remitted
• Sales tax payable to what was collected
• Inventory to counts or perpetual records, if applicable

Record period-end entries

• Depreciation for the month
• Prepaid expenses released for the portion consumed
• Accruals for costs incurred with no invoice yet received
• Reversal of last period accruals, if not automatic
• Deferred revenue released for work delivered
• Any adjusting entries identified during reconciliation

Clear the problem accounts

• Suspense and clearing accounts to zero
• Undeposited funds or equivalent holding accounts
• Uncategorised income and expense
• Ask-my-accountant or equivalent

Anything parked in these was parked because someone did not know where it belonged. Resolving them at close is far easier than resolving them a year later.

Review

• Balance sheet: any negative balances, which almost always indicate errors
• Balance sheet: anything that has not moved when it should have
• P&L: gross margin against the previous month and the same month last year
• P&L: any expense line that moved more than you can explain
• AR aging: anything newly overdue or concerning
• AP aging: anything about to fall past terms

Close

• Set the closing date in your software so entries cannot be posted into the period
• Produce and file the statements
• Note anything that needs action or investigation next month

That first step is the one most often skipped and it is what makes close meaningful. Without a lock, last month figures can change after you have reported them.

How long it should take

That depends on transaction volume and how clean the month was. What matters more than the duration is that it happens on a schedule and finishes. A close that drifts into the middle of the following month is barely a close at all.

If you are behind

Do not attempt to close six months at once. Work forward from the last period that was correct, closing each month in sequence. Reconciling the current month on top of unreconciled history carries the errors forward and makes them harder to find.

Define the decision and boundary

Build a reliable monthly close around the decisions, entities, periods, users, deadlines, and responsibilities in scope. Write what is included, excluded, prepared, reviewed, approved, and retained. Do not rely on a product label, job title, or generic package name.

Gather and reconcile the inputs

Start with bank, card, payroll, loan, receivable, payable, tax, and fixed-asset records. Tie opening balances and source totals to the closed ledger before changing a process or importing history. Keep verified facts, management assumptions, unresolved questions, and specialist judgments separately identifiable.

Map the workflow

Trace one representative transaction from source through entry, approval, payment or collection, reconciliation, reporting, correction, and retention. Include normal items, credits, reversals, duplicates, late changes, and failed integrations. Give every exception a reason, owner, evidence requirement, due date, and escalation path.

Protect access and approvals

Use named accounts, multifactor authentication, minimum privileges, periodic access review, secure document exchange, backup coverage, incident contacts, and prompt offboarding. Separate master-data changes, transaction preparation, approval, release of funds, recording, and reconciliation where practical.

Test the risks

Specifically test cutoff, unsupported balances, stale items, and late journals. Preserve the original evidence and approved correction instead of overwriting history. Review results independently for material decisions and state the date, scope, currency, basis, preparer, reviewer, and limitations on distributed reports.

Required handoff

The completed process should produce closed trial balance, reconciliations, schedules, statements, and reviewer sign-off. Confirm files and attachments export in usable formats, formulas and definitions are documented, open items have owners, and access can be removed without losing company records.

Review checklist

• Requirements and owners are written
• Source totals reconcile before go-live
• Normal and exception paths are tested
• Approval and payment authority are explicit
• Reports tie to supporting schedules
• Changes and corrections remain traceable
• Exit data and continuity are proven