Month-end close checklist for small businesses

At a small business, “close” usually means one person — an owner, a bookkeeper, an outsourced accountant — turning a month of activity into statements someone can trust. The steps are the same every month, roughly in dependency order below, with a note on which are pure grind and which need actual judgment. The list assumes QuickBooks Online or something like it, but nothing here is software-specific. (Job-costed contractor with multiple entities? Use the contractor version instead.)

1. Get everything in (the grind)

• Pull vendor bills out of the inbox and enter them, dated in the right month.
• Chase receipts for card charges that came through the bank feed uncategorized.
• Scan for duplicates: same vendor, same amount, slightly different reference number.
• Send any invoices you owe customers; record payments that arrived.

This is where the hours go, and it's why close slips to the 20th. Every bill entered late lands in the wrong month, and every one entered twice overstates expenses until someone notices.

2. Reconcile cash (the anchor)

• Bank reconciliation for every checking and savings account.
• Credit card reconciliation — every card, including the one that's “only for subscriptions.”
• Clear stale uncleared transactions; a check outstanding for 90 days is a question, not a rounding error.

If cash reconciles, most other errors have nowhere to hide. If it doesn't, stop and find out why before touching anything else.

3. Clean the ledger (the judgment)

• Work the uncategorized-transactions list to zero.
• Review the P&L against last month: any line that moved a lot should have a one-sentence explanation.
• Check accounts receivable aging; decide what needs a call, a reminder, or a write-off.
• Book recurring adjustments if you use them: prepaids, loan interest split from principal, owner draws coded correctly.

4. Close and record

• Run the P&L, balance sheet, and cash summary; read them like an outsider would.
• Set the closing date in your accounting software so last month stops moving.
• Write down what broke or ran late this month. Next month's close starts there.

The pattern

Sections 2 and 3 need a human who knows the business. Section 1 is mechanical work that scales with transaction volume: reading documents, keying fields, spotting duplicates. That's the part worth automating — bills read and coded on arrival, checked, and queued for a person to approve — so close starts on the 1st with the grind already done, and the judgment is the whole job instead of the reward for finishing the typing.