Year-End Bookkeeping Checklist for Small Businesses

Tax preparation is only as good as the books underneath it. The owners who have an easy January are usually the ones who treated year-end as a bookkeeping project in December, not a scramble in March. Specific tax deadlines and rules depend on your entity type and state, so confirm them with your CPA. The steps below are the bookkeeping side.

1. Reconcile every account through December 31

Bank accounts, credit cards, loans, payment processors and any account that holds money. Work from statements, not just the feed. If a statement for the final month is not available yet, schedule the reconciliation for the day it is. Our bank reconciliation guide covers the method.

2. Clear the holding accounts

Uncategorized income, uncategorized expenses and any suspense or ask-my-accountant balance should be zero or explained. Every item left there is a question your CPA will have to ask later.

3. Review receivables and payables

• List unpaid customer invoices and decide which are collectible. Your CPA can advise on bad debts.
• List unpaid vendor bills so expenses land in the right year.
• Look for duplicate or misdated entries around the year boundary.

4. Check balances that must tie to outside records

• Loan balances against lender statements.
• Sales tax payable against your returns and payments.
• Payroll liabilities against payroll provider reports.
• Owner draws and contributions against the bank.

5. Handle fixed assets and inventory

Record equipment purchases correctly instead of expensing everything, and keep invoices. If you carry inventory, do a count and compare it to the books. How purchases are treated for tax is a CPA decision.

6. Collect the documents your CPA will ask for

• Final reconciled profit and loss statement and balance sheet.
• Year-end bank and loan statements.
• Payroll reports and contractor payment totals.
• Receipts for large purchases and vehicle or home-office records, if relevant.
• Last year's return, if your CPA does not already have it.

7. Close the year

Once your CPA is satisfied, lock the books through December 31 so later edits do not change filed numbers. In QuickBooks Online this is a closing date setting, and in Xero a lock date. Our monthly close checklist shows the same discipline applied every month.

A note on timing

Vendors and customers often send late invoices in January for December work. Decide with your CPA how to treat items dated near the boundary, then apply the same rule everywhere. Consistency matters more than the particular choice, because it keeps this year and next year comparable and makes your reports easier to explain to a lender or an adviser.

Ask for a year-end review call

Before the books go to your CPA, spend twenty minutes with whoever keeps them. Walk through the profit and loss statement line by line and ask about anything that looks unusual, such as a category that doubled or an expense that is missing. Owners often catch an error here that would otherwise surface in a tax return.

If the year is already a mess

If several months are behind, start with catch-up bookkeeping before the year-end steps. Reading about tax deadlines helps you plan the calendar.

Frequently asked questions

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