Year-End Bookkeeping Checklist for Small Businesses (2026)

Most of the stress small business owners feel in March starts in December. A missing bank statement, a contractor without a W-9, a credit card nobody reconciled since summer: each one is a small fix in December and a large one when your tax preparer is waiting.

This checklist is the same order we work through for our own clients every year-end. You don't need to be an accountant to follow it. You do need a few quiet hours and your bank and card statements.

1. Reconcile every bank and credit card account through December 31

Reconciling means matching your books to the bank's statement, line by line, until the difference is $0.00. Do it for every checking, savings, and credit card account the business uses, including the card you only use "sometimes."

If an account hasn't been reconciled in months, start with the oldest unreconciled month and work forward. Skipping ahead hides the problem rather than fixing it.

2. Clear out uncategorized and "Ask My Accountant" transactions

Anything sitting in Uncategorized Income, Uncategorized Expense, or Ask My Accountant at year-end becomes a question your tax preparer bills you to answer. Go through each one and code it to a real account. If you truly don't remember what a charge was, the vendor name on the bank line and your email receipts usually solve it.

3. Separate personal charges from business ones

Personal purchases on the business card, and business purchases on your personal card, both distort your profit. Record personal charges on business accounts as owner draws (or shareholder distributions), not expenses. Business expenses paid personally can be recorded as an owner contribution, or reimbursed, so the deduction isn't lost.

4. Collect W-9s now, using the new $2,000 threshold

For payments made in 2026, you generally need to send a Form 1099-NEC only to contractors you paid $2,000 or more, up from $600 in prior years. The threshold is adjusted for inflation starting in 2027.

• Run a report of everyone you paid in 2026 and sort by total.
• Request a W-9 from every contractor at or near $2,000 who doesn't already have one on file.
• Remember that payments made by credit card or through payment apps like PayPal are typically reported by the processor, not by you.
• When it's time to file, an e-file service like Tax1099 sends the forms to the IRS and emails copies to your contractors.

Getting W-9s in December is easy. Chasing a contractor who has moved on, in late January, is not.

5. Mark your filing deadlines

January 31 falls on a Sunday in 2027, so the W-2 and 1099-NEC deadlines move to Monday, February 1.

6. Total your business mileage at both 2026 rates

The IRS set the standard business mileage rate at 72.5 cents per mile for January through June 2026, then raised it to 76 cents per mile for July through December. If you use the standard mileage method, total your business miles separately for each half of the year. One combined number at a single rate will be wrong.

Your log should show the date, destination, business purpose, and miles for each trip. A mileage app is fine, as long as you can export it.

7. Tie out payroll

Compare the wages and payroll taxes in your books to your payroll provider's year-to-date reports. They should match. Also confirm every employee's address and Social Security number before W-2s are produced, and that any bonuses you plan to pay in December are run before December 31 if you want them in 2026.

If payroll is still done by hand or in spreadsheets, a payroll service like Gusto files the payroll tax forms and produces W-2s for you. It's what we use for our clients' payroll.

8. Review what customers owe you and what you owe vendors

Open your accounts receivable aging report. Follow up on anything past due, and talk to your tax preparer about writing off invoices you know won't be paid. Then review accounts payable: duplicate or already-paid bills sitting open make your books look worse than they are.

9. Record loans, large purchases, and inventory

Make sure loan balances in your books match your lender's year-end statements, with each payment split between principal and interest. List any equipment or vehicles bought during the year, with dates and receipts, so your tax preparer can handle depreciation. If you carry inventory, count it on or near December 31.

10. Run your reports, then lock the year

Run a year-end Profit & Loss and Balance Sheet and read them for anything that looks off: a negative bank balance, an expense category that doubled, a loan that never goes down. Once the numbers are right and your tax preparer has them, set a closing date in QuickBooks so 2026 can't be changed by accident.

Your year-end checklist at a glance

• All bank and credit card accounts reconciled through December 31
• No uncategorized or "Ask My Accountant" transactions left
• Personal and business charges separated
• W-9s on file for contractors paid $2,000 or more
• Deadlines on the calendar: January 15 and February 1, 2027
• Mileage totaled at 72.5 cents (Jan–Jun) and 76 cents (Jul–Dec)
• Payroll reports match the books
• Receivables and payables reviewed
• Loans, large purchases, and inventory recorded
• Year-end P&L and Balance Sheet reviewed, closing date set

Frequently asked questions

When are 1099-NEC forms due for 2026 payments?

By February 1, 2027, to both your contractors and the IRS.

Do I still need to send a 1099 to a contractor I paid $600?

Not for payments made in 2026, in most cases. The threshold is now $2,000. The exception is when backup withholding applied to that contractor.

What if my books are months behind?

Start with step 1 and work forward month by month. If you're more than a few months behind, catch-up bookkeeping is usually faster and cheaper than having your tax preparer reconstruct the year.