Month-end close checklist for small businesses

A month-end close checklist turns "doing the books" into a short list of steps you finish in the same order every month. Closing means you confirm every transaction for the month is recorded, every account agrees with an outside source such as a bank statement, and the reports are reviewed and then locked so nobody changes them by accident. Do it monthly and your profit and loss, balance sheet and cash position are numbers you can act on, not estimates.

This guide explains each step in plain words and ends with a checklist table you can copy, with who does each task and when. It assumes the day-to-day recording is already in place; if not, start with our step-by-step guide to small business bookkeeping.

Before you start: get everything recorded

The close goes fast when the month's transactions are already in the books. In the first day or two after month end:

Enter all customer invoices issued during the month and all payments received.
Enter every vendor bill dated in the month, even ones that arrive a few days late.
Collect receipts for card purchases, petty cash and staff expense claims, and record them.
Download the bank, credit card and loan statements for the month.
Get the payroll reports for every pay run that fell in the month.

Set a cut-off date, such as the third business day, after which late paperwork goes into next month, unless it is large enough to matter.

Reconcile bank, credit card and petty cash accounts

Reconciliation is the heart of the close, because it ties your books to statements produced by someone else. For each bank and credit card account:

Compare every deposit and payment on the statement with the account in your books.
Record anything missing from the books, typically bank fees, interest, card processing charges and automatic payments.
List the timing differences: checks written but not yet cashed, and deposits made on the last day that the bank shows next month.
Confirm the statement balance, adjusted for timing differences, equals your book balance.

Count petty cash and compare it with the petty cash account; the cash plus the slips for money spent should equal the float. Reconcile loan accounts to the lender's statement, splitting each payment between interest and principal. Do not plug an unexplained difference with an adjustment. Find it, because it is often a missing transaction that also affects your profit.

Review accounts receivable and accounts payable

Receivables (what customers owe you)

Run the receivables aging report and check that it agrees with the accounts receivable balance in the ledger. Then look at each overdue invoice. Is the customer still expected to pay? Was a payment recorded against the wrong invoice? Has a credit been agreed and not yet issued? Write off or reserve for amounts you no longer expect to collect, following your CPA's guidance, rather than carrying them forever.

Payables (what you owe vendors)

Run the payables aging report and check it against the accounts payable balance. Compare large vendor balances with the vendor's own statement where you can. Look for duplicate bills, bills recorded but already paid, and bills for goods received that have not been entered. If you buy through purchase orders, check for goods received in the month without a matching bill; they are a cost of this month even if the invoice comes later.

Record accruals, prepaids and other adjustments

If you keep your books on an accrual basis, or want monthly reports that show true profit, adjust for costs and income that belong to the month but have not been billed or paid. In plain words:

Accrued expenses are costs you have used but not yet been billed for. If the electricity for October is billed in November, record an estimate in October as an expense and a liability, then reverse it when the real bill arrives.
Prepaid expenses are costs paid in advance for future months, such as a twelve-month insurance policy. Record the payment as an asset, then move one month's share to expense each month.
Deferred income is money customers paid before you did the work. It is a liability until you deliver.
Depreciation spreads the cost of equipment and vehicles over their useful life. Your CPA will usually set the method; record the monthly amount.

Keep the list of recurring adjustments short and documented, with a note of how each estimate was worked out. If double-entry still feels unfamiliar, our explainer on double-entry accounting for small business shows how each of these entries balances.

Whether these adjustments matter for your tax return depends on the accounting method you file under. IRS Publication 538 explains the cash and accrual methods; your CPA can tell you which applies to you.

Count inventory and record payroll

Count inventory and post adjustments

If you sell physical products, the stock on your shelves has to agree with the stock in your books. A full count every month is not always practical, so many businesses count their high-value or fast-moving items monthly and everything else on a rotating schedule, with a full count at year end.

Count before shipping or receiving starts, or note exactly which deliveries came in during the count.
Compare counted quantities with the system and investigate large differences before adjusting.
Post adjustments for shrinkage, damage and obsolete stock, with a reason for each.
Check that goods received and goods shipped near month end are in the right month.

The value of inventory, and therefore your cost of goods sold, depends on your costing method. Our guide to FIFO inventory costing explains how each sale picks up the cost of the oldest stock first.

Record payroll entries from your payroll provider

Most US small businesses run payroll through a provider that calculates withholding and employer taxes and files the payroll tax returns. Your books still need the totals. For every pay run in the month, record from the provider's journal or register report:

Gross wages as an expense, split by department if you report that way.
Employer payroll taxes and benefits as expenses.
Employee withholdings and employer taxes not yet paid over as liabilities.
Net pay as the cash that left the bank.

Then check that the payroll liability accounts clear when the provider pays the taxes, and accrue wages earned in the last days of the month but paid next month if you want the month's labor cost to be complete. The IRS asks employers to keep employment tax records for at least four years; see its recordkeeping guidance.

Review the trial balance, P&L and balance sheet, then lock the period

Trial balance

The trial balance lists every account with its debit or credit balance; total debits must equal total credits. Read down the list for balances that look wrong: a negative cash account, an asset with a credit balance, or an account that should be zero but is not.

Profit and loss

Compare this month with last month and with the same month last year. Ask why for any big change. A missing rent expense or a doubled sale shows up quickly here.

Balance sheet

Every balance sheet account should be backed by something: a bank reconciliation, an aging report, an inventory count, a loan statement, or a schedule of prepaids and accruals. Assets must equal liabilities plus equity.

Lock the period

When the reviewer signs off, lock the month in your accounting software, or at least record the close date and agree that no one posts into it. Corrections found later go into the current month with a clear note, so the reports you already shared stay the same.

Your month-end close checklist

Copy this table and adjust the owners and days to your business. "Day" means business days after month end.

Task	Who	When
Record all invoices, payments, bills and expenses for the month	Bookkeeper	Day 1–2
Download bank, card and loan statements; collect payroll reports	Bookkeeper	Day 1
Reconcile every bank and credit card account	Bookkeeper	Day 2–3
Count and reconcile petty cash	Office manager	Day 1
Review receivables aging; agree to the ledger	Bookkeeper, owner	Day 3
Review payables aging; check received-not-billed goods	Bookkeeper	Day 3
Record accruals, prepaids, deferred income and depreciation	Bookkeeper or CPA	Day 3–4
Count inventory and post adjustments	Warehouse lead, bookkeeper	Last day of month or Day 1
Record payroll totals and check payroll liabilities	Bookkeeper	Day 2–3
Review trial balance, P&L and balance sheet	Owner or manager	Day 4–5
Sign off and lock the period	Owner	Day 5

The person who reviews should not be the person who recorded the transactions. Even in a two-person office, that split catches most mistakes.

Make the next close faster

The fastest month-end close is the one where most of the work happened during the month. Record transactions weekly, reconcile busy accounts every week instead of once a month, and keep a running list of recurring adjustments. When every invoice, bill and payment posts to the ledger as it is entered, the close becomes reviewing rather than catching up.

That is the approach BMS Prime takes: invoices, vendor bills, bank accounts, credit cards, petty cash and expenses post to a double-entry ledger in US dollars, with receivables and payables aging, bank reconciliation, purchase orders and inventory with FIFO costing, and the trial balance, profit and loss, balance sheet and cash flow built from the ledger for any period. It does not run US payroll taxes or connect to bank feeds, so you keep your payroll provider and download your statements as usual. Read more about HR, time tracking and accounting for US small businesses, or see plans and pricing by team size.

Frequently asked questions

How long should a month-end close take for a small business?

It depends on volume and how current the books are during the month. A small business that records transactions weekly can often close within a few business days of month end. If the close regularly takes longer than a week, the usual causes are late paperwork, unreconciled accounts and catch-up data entry, all of which a weekly routine fixes.

What is the difference between month-end close and year-end close?

The steps are largely the same: reconcile, accrue, review and lock. Year-end adds extra work, such as a full inventory count, depreciation review, adjustments your CPA proposes, closing income and expenses into retained earnings, and preparing records for the tax return and any information returns. A business that closes every month properly finds year end much easier.

Do I need to do accruals if I file taxes on a cash basis?

Not for the tax return itself, which follows the method you file under. But many owners record month-end accruals in their management books anyway, because they show the real profit for each month instead of swings caused by when bills happen to be paid. Ask your CPA how to keep management reports and tax reporting aligned.

What should I do if the bank reconciliation does not balance?

Check the obvious first: the right statement period, the correct opening balance and any transactions dated near month end. Then compare deposits and payments line by line, looking for missing entries, duplicates and transposed digits. A difference divisible by nine often points to swapped digits. Do not force the balance with an unexplained adjustment; find the cause.

Who should do the month-end close?

In a small business, the person who keeps the books usually prepares the close, and the owner or a manager reviews it. Splitting the work matters: the reviewer should not be the same person who recorded the transactions, so mistakes and irregularities are caught. Many businesses also have a bookkeeper or CPA review the close monthly or quarterly.