Year End Bookkeeping Checklist for Small Businesses (2026)

Skip it, and you spend February chasing receipts, fixing payroll totals and paying for rushed corrections.

This year-end closing checklist walks through the 2026 close step by step: reconciling your books, preparing W-2s and 1099s, the tax moves to make before December 31, what changed this year, and every deadline from December to April.

What Is a Year-End Close?

A year-end close is the process of finalizing your books for the year so every account is accurate, reconciled and locked before you file taxes. It is a bigger version of your month-end close, with extra steps for payroll forms, contractor reporting, inventory, fixed assets and tax planning.

For a calendar-year business, the close covers January 1 to December 31, 2026. Most of the bookkeeping happens in the first two to three weeks of January, but the tax moves have to happen before December 31.

If you have ever wondered how to close the books at year end, think of it in three stages: reconcile, adjust, then review and lock.

Year-End Bookkeeping Checklist: Closing Your 2026 Books

Stage 1: Reconcile Every Account

• Bank accounts: match every checking and savings account to its December 31 statement.
• Credit cards: reconcile each card, including cards held by employees.
• Loans and lines of credit: split each payment between principal and interest, and match the balance to the lender's year-end statement.
• Payment processors: reconcile Stripe, PayPal, Square or Shopify payouts so fees and refunds are recorded, not just the net deposits.
• Petty cash and clearing accounts: bring them to zero or to a counted balance.

Stage 2: Clean Up and Adjust

• Clear uncategorized items. Empty any suspense or "Ask My Accountant" accounts, and recode anything posted to miscellaneous.
• Review receivables. Chase overdue invoices and, if you use accrual accounting, write off debts you will not collect.
• Record unpaid bills. Enter December bills that arrive in January so the expenses land in the right year.
• Book accruals and prepaids. On the accrual method, record deferred revenue, prepaid expenses and accrued costs.
• Count inventory. Take a physical count on December 31 and adjust cost of goods sold for damaged or obsolete stock.
• Update your fixed asset list. Add 2026 purchases, remove anything sold or scrapped, and record depreciation. Items costing $2,500 or less per invoice or item can often be expensed under the de minimis safe harbor election, provided you make the election with your return. The threshold is $5,000 for businesses with an applicable financial statement.
• Separate owner transactions. Move personal expenses out of business accounts and record owner draws or S corp distributions correctly.

Not sure which method your business uses? Our guide to cash vs accrual accounting explains the difference.

Stage 3: Review and Lock

• Compare 2026 to 2025. Run a profit and loss statement and balance sheet side by side and investigate any big swings.
• Tie payroll to your filings. Payroll expense in the books should match your four Forms 941 and your W-2 totals.
• Reconcile sales tax. Tax collected should match what you filed and paid in each state.
• Lock the period. Set a lock date in Xero or a closing date in QuickBooks Online so no one changes 2026 by accident.
• Send a clean package to your tax preparer. Include financial statements, reconciliations, the fixed asset list and payroll reports.

Payroll and Contractor Year-End Checklist

Payroll and contractor forms carry the hardest deadlines of the close. For 2026 they are due Monday, February 1, 2027, because January 31 falls on a Sunday.

• Verify employee details. Confirm names, addresses and Social Security numbers before W-2s are produced.
• Report tips and overtime correctly. On 2026 W-2s, qualified tips go in box 12 with code TP and qualified overtime with code TT, so check that your payroll provider is ready.
• S corporation owners: make sure your 2026 salary ran through payroll and that health insurance premiums the company paid are added to your W-2.
• Collect missing W-9s now. For 2026 payments, a contractor needs a 1099-NEC only once you have paid them $2,000 or more for the year.
• Exclude card and app payments. Payments made by credit card or through PayPal are reported by the processor on Form 1099-K, not by you.
• Confirm your e-file route. The IRS FIRE system closes on November 19, 2026, and IRIS becomes the only IRS e-file system for 1099s.

Our Form 1099-NEC guide covers the contractor rules in full, and our payroll management team can handle W-2s and year-end filings for you.

Year-End Tax Moves to Make Before December 31

Once December 31 passes, most of these options are gone for 2026.

• Place equipment in service. Section 179 allows up to $2,560,000 of expensing for 2026, and 100% bonus depreciation is now permanent for property acquired after January 19, 2025. The asset has to be in service by December 31, not just ordered. Section 179 cannot exceed your taxable business income, while bonus depreciation can create a loss, which is usually what decides between them.
• Time income and expenses if you use the cash method. Paying deductible bills in December, including prepaying certain expenses up to 12 months ahead, moves the deduction into 2026. Sending a late-December invoice in January moves the income into 2027.
• Fund retirement accounts. For 2026, employees can defer $24,500 into a 401(k), plus $8,000 in catch-up contributions at age 50 or older, or $11,250 at ages 60 to 63, with up to $72,000 of combined employee and employer contributions. Catch-up amounts sit on top of the $72,000 limit rather than inside it. Some plans must exist by December 31 to accept 2026 deferrals, so check with your provider now.
• Split your mileage log at June 30. The IRS raised the business mileage rate mid-year: 72.5 cents per mile through June 30, 2026 and 76 cents from July 1.
• Check your estimated taxes. C corporations owe their final 2026 installment on December 15, 2026. Individuals and pass-through owners have until January 15, 2027. See our estimated quarterly taxes guide.
• Decide on your 2027 structure. If an S corporation election makes sense, the Form 2553 deadline for 2027 is March 15, 2027.

What Changed for Year-End 2026

Figures in this table were checked against IRS and FinCEN guidance on September 29, 2026.

Year-End Deadlines: December 2026 to April 2027

Common Year-End Closing Mistakes

• Booking net deposits from payment processors. Recording only the payout from Stripe or PayPal hides fees and refunds, which understates both income and expenses.
• Leaving personal expenses in the books. They inflate deductions you cannot support and blur the line between you and the business.
• Deducting equipment that was only ordered. Without a placed-in-service date by December 31, there is no 2026 write-off.
• Using one mileage rate for the whole year. 2026 has two business rates, split at June 30.
• Forgetting to lock the period. An edit to 2026 after your return is filed leaves your books and your tax return out of step.

Bottom Line: A Clean Close Is the Cheapest Tax Planning You Can Do

A year-end close is not glamorous, but it decides how smooth, accurate and inexpensive your tax season will be.

If your books are behind, or you would rather hand the close to a team that does it every month, Orbit Accountants can reconcile, adjust and lock your 2026 books through our bookkeeping services and have your W-2s, 1099s and tax package ready on time.

Frequently Asked Questions

When should a small business start its year-end close?

Start planning in November, make your tax moves before December 31, and finish reconciling and locking the books in the first two to three weeks of January. That leaves time for W-2s and 1099s, which are due February 1, 2027.

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

A month-end close reconciles accounts and reviews results each month. A year-end close adds annual work such as inventory counts, depreciation, payroll and contractor forms, tax adjustments and locking the year. Twelve clean month-end closes make the year-end close much faster.

Do sole proprietors need to close their books?

Yes. Even if you file on Schedule C, your tax return is only as accurate as your books, and reconciled accounts are your best support if the IRS asks questions.

Can I deduct equipment I buy in late December?

Yes, if it is placed in service by December 31, 2026. Equipment that is ordered in December but not delivered and ready for use until January counts for 2027.

Do small businesses still need to file BOI reports?

US-formed companies no longer do. A FinCEN final rule effective August 14, 2026 permanently exempts every domestic entity, regardless of size or ownership, and FinCEN is deleting information previously reported about US persons. Foreign companies registered to do business in a US state still have to report.

Can Orbit Accountants close my books for 2026?

Yes. We reconcile every account, post year-end adjustments, lock the period in Xero or QuickBooks Online and prepare the package your tax preparer needs, as part of our bookkeeping services.

My books are months behind. Can Orbit still help me close the year?

Yes. Our catch-up bookkeeping team can bring 2026 up to date first, then complete the year-end close so you still meet the February and March deadlines.

Legal disclaimer

This article is for informational purposes only and does not constitute tax, legal, or accounting advice. Tax laws, limits and deadlines may change. Always consult a qualified professional before making year-end tax decisions.