Year-End Accounting Checklist for Small Businesses

At year-end, reconcile every account through December 31, close your books, issue 1099-NECs and W-2s by January 31, file final payroll returns (940 and Q4 941), count inventory, and gather everything your tax preparer needs. Starting in December — not January — is what separates a calm close from a chaotic one.

It's the second week of January. You're digging through a year's worth of paperwork, trying to figure out which contractors you paid over $600, your payroll numbers don't tie out, and you just realized nobody counted inventory in December. Meanwhile, the 1099 deadline is ticking.

Or — alternate universe — you started in early December, worked through a checklist one item at a time, and January is just... calm. Forms filed, books closed, tax preparer happy.

This checklist is how you get to the calm version.

1. Reconcile everything through December 31

Every bank account, every credit card, every loan account — reconciled through the last day of the year. No exceptions, no "close enough."

• Reconcile in QuickBooks Desktop under Banking > Reconcile, one account at a time.
• Resolve every discrepancy now. A $40 difference in March becomes an unsolvable mystery by next January.
• Confirm your QuickBooks balances match your actual statements to the penny. Your tax return is built on these numbers — they have to be right.

2. Clean up accounts receivable and payable

• Review your A/R aging. Write off anything truly uncollectible (properly, as bad debt — not by deleting invoices).
• Review A/P. Make sure every bill for the year is entered, including ones that arrive in January but belong to December.
• Confirm any large outstanding balances directly with the customer or vendor. Year-end is when surprises surface.

3. Count your inventory

If you carry inventory, do a physical count as close to December 31 as possible. Compare it to QuickBooks and adjust for shrinkage, damage, or counting errors. Your cost of goods sold — and therefore your taxable income — depends on this number being right.

4. Review fixed assets and depreciation

• Add any equipment, vehicles, or major purchases you made during the year to your fixed asset list.
• Remove anything you sold or disposed of.
• Make sure depreciation is recorded. If your accountant handles depreciation, send them the asset list now — don't make them chase you for it in March.

5. Close the books for the year

Once everything is reconciled and reviewed, lock the year down. Set a closing date in QuickBooks (Edit > Preferences > Accounting > Company Preferences > Set Date/Password) so last year's numbers can't be accidentally changed. Clean, locked books are the foundation of an accurate tax return — [here's how to close your books in QuickBooks Desktop the right way](/close-your-books-in-quickbooks-desktop/).

6. Gather W-9s and issue 1099-NECs

This is the one with the tightest deadline and the sharpest teeth.

• Anyone you paid $600 or more for services during the year (contractors, freelancers, attorneys) generally needs a 1099-NEC. You should have collected a W-9 from each of them *before* you paid them — if you didn't, chase those down immediately.
• Deadline: January 31. Both the recipient copy and the IRS filing are due the same day, and there's no automatic extension. (When January 31 falls on a weekend, it shifts to the next business day — for tax year 2025, that's Monday, February 2, 2026.)
• Miss it and penalties start at around $60 per form, climbing the longer you wait. Ten missed 1099s can turn into a four-figure problem fast.

7. Issue W-2s and file W-3

• W-2s go to every employee by January 31, and the W-3 transmittal goes to the Social Security Administration on the same deadline.
• Double-check names, Social Security numbers, and totals before you send. Corrections are a hassle you don't need in February.

8. File final payroll returns: 940 and Q4 941

• Form 941 (Q4): due January 31 — or February 10 if all your deposits were made on time.
• Form 940 (annual FUTA): due January 31 — or February 10 if deposits were timely.
• Reconcile your payroll reports to your actual deposits first. If the numbers don't match, find out why *before* you file — amended payroll returns are nobody's idea of fun. If you do need to fix a prior filing, [here's how to file a corrected federal Form 941 or 940 in QuickBooks](/file-a-corrected-federal-form-941-and-940-in-quickbooks/).

9. Review your financial statements

Pull your full-year profit and loss, balance sheet, and statement of cash flows. Read them like your tax preparer will:

• Does revenue look complete? Any missing income?
• Are expenses categorized sensibly? Anything sitting in "ask my accountant"?
• Does the balance sheet balance? (It should — if it doesn't, fix it before your preparer finds it.)

10. Assemble your tax package

Make it easy for whoever prepares your return:

• Full-year financial statements (P&L, balance sheet).
• Bank and loan statements for December.
• Records of major purchases, asset sales, and new loans.
• Mileage logs, home office records, and any other deduction documentation.
• Copies of all 1099s and W-2s issued.

The cleaner the package, the faster (and cheaper) your tax prep.

Key deadlines at a glance

• January 31: W-2s and 1099-NECs to recipients and agencies; Q4 Form 941; annual Form 940. (February 10 grace for 941/940 only if all deposits were timely.)
• March 15: S corporation and partnership tax returns.
• April 15: Individual and C corporation tax returns; Q1 estimated payments.

Put these on your calendar in December, not January. Future-you says thanks.

Conclusion!

That brings us to the end of this guide on the year-end accounting checklist for small businesses. We hope the checklist explained above helped you close out the year cleanly and hit every deadline without the January panic. If you run into any difficulty working through it, consider consulting a qualified and experienced QuickBooks professional for further assistance.

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