Year-end payroll is where small mistakes become official documents. A misspelled name, a missing fringe benefit, or a quarterly return that does not agree with the W-2 totals all surface in January, when the forms are due and the fixes are slow. Most of the work can be done in November and December, while there is still a payroll run left to correct things.
Here is a practical checklist, split into what to do before the last paycheck of the year and what to file once the year closes.
Before the last payroll of the year
1. Confirm employee details. Have every employee verify their legal name, Social Security number, and mailing address. A name that does not match Social Security records is one of the most common reasons a W-2 has to be corrected, and an old address means the form never arrives.
2. Add taxable fringe benefits. Some benefits have to be included in wages on the W-2 even though no cash changed hands: personal use of a company vehicle, group-term life insurance coverage above $50,000, and gift cards or other cash-equivalent gifts. If you own more than 2% of an S corporation, health insurance premiums the company paid for you are included in your Box 1 wages. These are easiest to add through payroll before the final run of the year.
3. Decide on bonuses now. Wages count in the year they are paid, not the year they were earned. A bonus paid on December 31 is this year's wages; one paid on January 2 is next year's. Choose deliberately, because it affects both your deductions and your employees' tax forms.
4. Review worker classification. Anyone you paid as a contractor who worked set hours, under your direction, with your tools, deserves a second look before you issue a 1099 instead of a W-2. Misclassification is far cheaper to fix going forward than after an audit.
Reconcile before you file
Add up the four quarterly Forms 941 you filed for the year. Total wages, federal income tax withheld, and Social Security and Medicare wages on those returns should match the totals on your W-2s and the W-3 summary. If they do not, find out why before anything is filed. The IRS and the Social Security Administration compare these numbers, and a mismatch generates notices months later.
Then check the books. The payroll tax liability accounts on your balance sheet should show only what is still owed for the final period, not a growing balance nobody can explain. Wage expense on your profit and loss statement should agree with gross wages on the payroll reports. A difference usually means a payroll was recorded as a single net bank withdrawal, or a tax payment was coded to the wrong account.
Finally, confirm that retirement deferrals, HSA contributions, and dependent care benefits are set up correctly in your payroll system. Each one lands in a specific W-2 box and affects your employees' own returns.
January deadlines for the 2026 tax year
The usual deadline for the main year-end payroll forms is January 31. In 2027, January 31 falls on a Sunday, so the deadline moves to Monday, February 1.
Due February 1, 2027: Forms W-2 to employees; Forms W-2 with the W-3 transmittal to the Social Security Administration; Form 941 for the fourth quarter; and Form 940, the annual federal unemployment (FUTA) return. If you deposited all the tax for Form 941 or Form 940 on time and in full, you have until February 10 to file that return.
If you file ten or more information returns in total, counting W-2s and 1099s together, you are generally required to file electronically. State withholding and unemployment filings have their own forms and dates, and many states require an annual reconciliation of state withholding, so check your state's schedule too.
Start the new year with clean books
Payroll forms are only as good as the books behind them. If your payroll entries, tax payments, and bank accounts have not been reconciled lately, deal with it now, before January compresses everything into a few weeks.
Evolv Bookkeeping can bring behind books current with a cleanup at $199 for each month behind, finished in 2 days and guaranteed in writing. After that, we keep everything reconciled every month for $199 flat, with 1099 prep for your contractors at year end. No contracts, cancel anytime. Get an instant quote on our homepage.