A month-end close checklist for small businesses

The MitoBooks team · November 3, 2026

Big companies close their books every month because investors and lenders demand it. Small businesses usually don't, and the bill for that shows up in March, when a year of unreconciled accounts lands on an accountant's desk at an hourly rate.

A monthly close doesn't have to be a project. For most small businesses it's an hour of routine, and it turns tax season into sending a few reports.

The checklist

1Enter everything for the month: invoices, bills, receipts and expenses. Snap photos of paper receipts as they come in so nothing is waiting at month end.
2Bring in your bank and credit card transactions and categorize them. Bank rules handle the repeats.
3Match deposits to payments, so Undeposited Funds only holds money that really hasn't reached the bank.
4Reconcile every bank and credit card account to the statement. The difference should be zero.
5Review accounts receivable aging. Follow up on anything past due, and decide what to write off.
6Review accounts payable aging. Make sure every bill you've received is entered and nothing has been paid twice.
7Record adjusting entries: loan interest, depreciation, prepaid expenses, payroll from an outside provider.
8Read the profit and loss and balance sheet. Compare with last month. A number that moved a lot deserves a look.
9Check the trial balance. Look for odd balances, like a negative bank account or money sitting in an uncategorized account.
10Set the closing date to the last day of the month so the numbers can't change unnoticed.

How MitoBooks helps

AI Capture turns a photo of a receipt or bill into a draft entry you review before saving. See AI Capture.
Bank statement import and bank rules categorize transactions from CSV, QFX or OFX files. See Bank rules.
Reconciliation with a discrepancy report when the difference isn't zero. See Reconciling an account.
A closing date with an optional password that guards the month you just finished. See Closing the books.

Start small

If a full close feels like too much, start with steps 4 and 10: reconcile your main bank account and set a closing date. Those two alone catch most of the errors that cost money at tax time.

A month-end close checklist for small businesses

The MitoBooks team · November 3, 2026

A monthly close doesn't have to be a project. For most small businesses it's an hour of routine, and it turns tax season into sending a few reports.

The checklist

1Enter everything for the month: invoices, bills, receipts and expenses. Snap photos of paper receipts as they come in so nothing is waiting at month end.
2Bring in your bank and credit card transactions and categorize them. Bank rules handle the repeats.
3Match deposits to payments, so Undeposited Funds only holds money that really hasn't reached the bank.
4Reconcile every bank and credit card account to the statement. The difference should be zero.
5Review accounts receivable aging. Follow up on anything past due, and decide what to write off.
6Review accounts payable aging. Make sure every bill you've received is entered and nothing has been paid twice.
7Record adjusting entries: loan interest, depreciation, prepaid expenses, payroll from an outside provider.
8Read the profit and loss and balance sheet. Compare with last month. A number that moved a lot deserves a look.
9Check the trial balance. Look for odd balances, like a negative bank account or money sitting in an uncategorized account.
10Set the closing date to the last day of the month so the numbers can't change unnoticed.

How MitoBooks helps

AI Capture turns a photo of a receipt or bill into a draft entry you review before saving. See AI Capture.
Bank statement import and bank rules categorize transactions from CSV, QFX or OFX files. See Bank rules.
Reconciliation with a discrepancy report when the difference isn't zero. See Reconciling an account.
A closing date with an optional password that guards the month you just finished. See Closing the books.

Start small

If a full close feels like too much, start with steps 4 and 10: reconcile your main bank account and set a closing date. Those two alone catch most of the errors that cost money at tax time.