A month-end close checklist for small businesses

Why close the books every month?

A month-end close is the routine that turns a month of transactions into numbers you can rely on. Without it, errors pile up unnoticed, cash looks better or worse than it really is, and year-end becomes a reconstruction job for you and your CPA.

The checklist below works for most small businesses using QuickBooks Online, Xero or Zoho Books. Skip steps that don’t apply, such as payroll if you have no employees, but keep the order.

1. Gather your documents

Collect everything that recorded money moving during the month: bank and credit card statements, sales invoices, vendor bills, receipts, payroll reports, loan statements and statements from payment processors such as Stripe, Square or PayPal.

2. Record every transaction

Make sure all sales, expenses, transfers and payments for the month are entered. Clear out anything sitting in “uncategorized” or “ask my accountant” accounts, and attach receipts to expenses so you can answer questions later.

3. Reconcile bank and credit card accounts

Match every transaction in your books against the statement for each bank and credit card account, then confirm the reconciled balance agrees with the statement. This single step catches most errors: duplicates, missed entries and transactions posted to the wrong account. Our bank reconciliation guide walks through it.

4. Review accounts receivable

Run an aged receivables report. Follow up on overdue invoices, apply customer payments to the right invoices and flag anything that may be uncollectible to discuss with your accountant.

5. Review accounts payable

Check that every bill for the month is entered once, and only once. Compare balances with vendor statements where you have them, and confirm what’s due in the coming weeks.

6. Record payroll

Make sure wages, employer payroll taxes and benefits are recorded for every pay run in the month. If a pay period spans month end and you keep accrual-basis books, record the wages earned but not yet paid.

7. Post adjusting entries

If you keep accrual-basis books, record the entries that match income and expenses to the right month: accrued expenses, prepaid expenses being used up, depreciation on fixed assets and revenue received in advance. Your accountant can set up a standard list so this takes minutes each month.

8. Reconcile balance sheet accounts

Go beyond the bank. Check loan balances against lender statements, payroll liabilities against what’s actually owed, sales tax payable against your filings and owner’s equity for unusual entries. A balance sheet that ties out is the best sign your books are right.

9. Review your financial statements

Compare this month’s profit and loss and balance sheet with last month and, if you have one, your budget. Investigate large swings, negative balances where there shouldn’t be any and expenses in odd categories. Most errors are visible once you look for what doesn’t make sense.

10. Lock the period and share the results

Once the month is final, lock it so earlier transactions can’t change by accident. QuickBooks Online calls this setting a closing date, Xero uses lock dates and Zoho Books has transaction locking. Then share the reports, with a few lines on what changed, with whoever needs them: your partners, lender or CPA.

Common mistakes to avoid

• Reporting before reconciling. It’s the most common reason small business numbers turn out wrong.
• Letting “uncategorized” grow. A few unknown items each month become hundreds by year end.
• Mixing personal and business spending. It complicates every step above, and your taxes.
• Closing whenever there’s time. Pick a target date each month and keep to it.

This article is general information, not accounting or tax advice for your business. Talk to your CPA about your specific situation.