Year-end is the highest-stakes time on the payroll calendar. In a few short weeks, your team has to run the final payrolls, check a full year of records, and send tax forms to workers and government agencies. A small mistake made in March can turn into a wrong W-2 in January, and fixing it then costs time, money, and trust.
At BSI, we have helped employers close out many payroll years with our industry-leading payroll tax software. Our experience shows that a clean close comes down to three things: verified employee data, reconciled tax figures, and filings submitted on time. We’ll walk you through each step so you can start preparing today.
Key Takeaways
- Start your year-end checklist in October or early November, working backward from your final payroll cutoff and assigning one owner to each task.
- Verify every worker’s legal name, address, SSN or TIN, employment status, and classification before the final payroll runs.
- Audit special payments, taxable fringe benefits, and manual or voided checks so W-2 wages are neither too low nor too high.
- Reconcile year-to-date payroll totals against the general ledger, quarterly returns, tax deposits, and benefit invoices before generating any forms.
- Preview your W-2s and 1099-NECs, then file them along with Forms 940 and 941 by January 31 while tracking state and local due dates separately.
- BSI’s ComplianceFactory™ and TaxProfileFactory™ software can automate tax filing, payments, and employee tax assignments to lighten the year-end workload.
Start With a Year-End Payroll Checklist
Why a Checklist Matters
A checklist keeps every task, owner, and due date in one place. Without one, year-end work lives in emails, sticky notes, and people’s memories. In our experience, that is how steps get skipped in December. A checklist also lowers the risk of last-minute corrections and penalties. When you can see what is still open, you catch problems while there is time to fix them.
How to Build Your Timeline
Start with your final payroll cutoff date and work backward. Ask what must be finished before that last payroll runs, then set due dates that leave room for review. We suggest starting in October or early November. Next, group your tasks into three phases and give each task one owner. We find that one name per task works better than a shared duty, because a single point of contact has been identified.
| Phase | Timing | Sample Tasks | Typical Owner |
| Before the final payroll | October to mid-December | Verify worker data, audit special payments, record fringe benefits | Payroll and HR |
| Before filing | Late December to January | Reconcile totals, confirm tax deposits, preview W-2s and 1099s | Payroll and Finance |
| After year-end | January to February | File forms, update tax rates, hold a review meeting | Payroll lead |
Verify Employee and Contractor Information
Confirm Personal Details
Wrong personal details are the most common reason we see forms get rejected or returned. Check that each worker’s full legal name matches their Social Security card. Then confirm current mailing addresses, since many people move and forget to tell payroll.
Review Social Security Numbers (SSNs) for employees and Taxpayer Identification Numbers (TINs) for contractors. A name and number that do not match can trigger notices and penalties. If a contractor has not given you a Form W-9, ask for it now.
Update Employment Status
Make sure every status change from the year is in your system. Promotions and title changes often come with new pay rates, so check that the correct rate started on the correct date.
Review terminations and department transfers too. A former worker who is still marked active can receive pay by mistake. Transfers can also move wages to a different state, which changes the taxes you need to withhold.
Tired of tracking these changes by hand? Our TaxProfileFactory™ software updates each employee’s tax assignment automatically when their work or home location changes. Contact our team to see it in action.
Review Worker Classification
Employees receive a Form W-2, and independent contractors receive a Form 1099-NEC. The difference depends on how much control your company has over the work, not on the worker’s title.
Misclassification carries real risk. If a contractor should have been an employee, you may owe back taxes, interest, and penalties. When a case is unclear, we recommend talking to a tax advisor before you file.
Audit Wages, Bonuses, and Fringe Benefits
Account for Special Payments
Special payments are easy to miss because they often fall outside the normal pay cycle. We recommend reviewing them in this order:
- Bonuses and commissions, which are supplemental wages and must be taxed and reported like other pay.
- Retro pay, which fixes a past underpayment.
- Severance payouts, which belong on a former worker’s W-2 for the year they were paid.
If a payment has no supporting documentation, find out why before the final payroll runs.
Include Taxable Non-Cash Benefits
Some benefits are taxable even though no cash changes hands. Personal use of a company vehicle is a common one, and its value must be added to the employee’s wages. Gather mileage logs early, because this step often depends on records from other departments.
Group-term life insurance coverage over $50,000 also creates taxable income. Third-party sick pay is another item to watch, since the insurance company pays the worker but you may still need to report it.
Log Manual and Voided Checks
Any payment made outside your payroll system must be entered before the year closes. This includes handwritten checks and cash advances. Unrecorded amounts will result in understated wages on the W-2. Voided checks need the same care. An unreversed voided check will result in an overstatement of reported wages. Confirm that each void was fully backed out.
Reconcile Payroll Registers, Taxes, Benefits, and Deductions
Balance Year-to-Date Totals
Start by matching your year-to-date (YTD) payroll register to the general ledger. Total wages, taxes, and deductions should agree in both places. Then compare your totals to the quarterly returns you filed, which is IRS Form 941 for most employers or Form 944 for very small ones. The four quarters added together should equal your annual totals.
Confirm Tax Deposits
Check that every federal, state, and local tax deposit was paid and reported accurately. Compare what you owed each pay period to what left your bank account. Look for missed deposits, double payments, or payments sent to the wrong agency.
Resolve any variances before forms are generated. Once a W-2 goes out with errors, you have to issue a corrected form. Fixing the source first is always faster.
Reconcile Benefits and Deductions
Review retirement contributions, health premiums, and garnishments for each worker. Make sure no one went over the annual retirement plan limit. Next, check that deduction totals agree with carrier and provider invoices. If you withheld more or less than the carrier billed, someone is owed money.
Review Compliance Deadlines and File Year-End Tax Forms
Validate W-2 and 1099 Information Before Filing
Run a preview or draft of your forms before you file anything. A preview lets you spot missing addresses, wrong names, and blank boxes while they are still easy to fix. Then check the box totals against your reconciled payroll data. If wages and taxes match what you balanced earlier, you can file with confidence.
Forms W-2 and W-3
Form W-2 reports each employee’s wages and taxes for the year. Form W-3 is the summary that goes with it. Both are filed with the Social Security Administration (SSA). You must issue employee copies by January 31, and the SSA filing is due the same day. If January 31 falls on a weekend, then the due date automatically shifts to the next business day.
Form 1099-NEC
Form 1099-NEC reports non-employee compensation paid to independent contractors. You must send it to both the contractor and the IRS by the early-year statutory deadline, which is January 31. Compare your contractor payments to your W-9 records, and check the current IRS reporting threshold to see who needs a form. Our table below lists the main federal due dates.
| Form | What It Reports | Who Receives It | Due Date |
| W-2 and W-3 | Employee wages and taxes withheld | Employees (W-2) and the SSA (both) | January 31 |
| 1099-NEC | Non-employee compensation | Contractors and the IRS | January 31 |
| 940 | Federal unemployment (FUTA) tax | IRS | January 31 |
| 941 (fourth quarter) or 944 | Wages and payroll taxes | IRS | January 31 |
Form 940 (FUTA)
Form 940 is the annual federal unemployment tax return. You must file it by January 31. When any due date falls on a weekend or holiday, it moves to the next business day. Before you file, confirm that your state unemployment taxes were paid in full and on time. If your state has borrowed money from the federal government for unemployment benefits and failed to repay the loan timely, your FUTA credit may be reduced, leading to a higher FUTA bill for all employers in your state.
State and Local Filings
State and local requirements and due dates vary by jurisdiction. Many states want their own copy of W-2 data and an annual reconciliation form. We see more missed deadlines at the state level than at the federal level. List every place where you have workers, including remote employees, and add each agency’s dates to your checklist.
Filing in more than one jurisdiction? Our ComplianceFactory™ software can file and pay federal, state, and local payroll taxes on your behalf. Reach out to our team to request a demonstration.
Coordinate With Finance and HR
Align With Finance
Meet with your finance team early to agree on the close schedule and accrual entries. Wages earned in December but paid in January must be recorded in the right period. Share your reconciliation results as soon as you have them. If payroll and the general ledger disagree, finance needs time to research the cause.
Align With HR
Work with HR to confirm benefit elections and open enrollment changes. New deduction amounts must be loaded before the first payroll of the new year. Also verify that final status changes are entered before the cutoff. Setting a firm date for HR to send changes and sharing it widely.
Communicate Important Updates to Employees
Clear communication cuts down on questions and corrections in January. Cover these four points:
- Ask employees to review their personal information and withholding elections.
- Share the final pay date and when tax forms will be available.
- Explain how to access forms electronically.
- Tell employees who to contact with questions or corrections.
Keep the message short and use plain language. Post it in more than one place, such as email and your employee portal, so everyone sees it.
Prepare for the New Year
Update Payroll Systems and Tax Tables
Load the new tax rates into your payroll platform before the first payroll of the year. If you use manual withholding tables, replace them with the current versions. Order updated labor law posters as well. Agencies revise their required notices often, and posting the current versions keeps you in compliance.
Apply New Rates and Wage Bases
Each state sends employers a new State Unemployment Insurance (SUI) tax rate, usually late in the year or in early January. Enter it as soon as the notice arrives. Annual wage base limits also change, such as the limit for Social Security tax. Confirm that your system reflects the new amounts.
Review PTO Policies
Clear or roll over unused paid time off according to company policy. Make sure your system settings match the written policy. Check state leave law requirements too. Some states limit “use it or lose it” rules or require paid sick leave to carry over.
Establish Next Year’s Payroll Calendar
Build next year’s payroll calendar before January. Set every pay date first, then mark the holiday changes where a bank holiday moves a pay date. Add bonus timelines and benefit open enrollment dates to the same calendar. Share it with finance, HR, and managers before the holidays.
Conduct a Post-Year-End Review
Evaluate What Happened
Once filings are done, hold a short review meeting while details are fresh. List the errors, corrected forms, and missed handoffs between teams. Note which tasks took longer than planned. They show where your timeline was too tight.
Improve Next Year’s Process
Update your checklist with the lessons you learned. Moving recurring problem tasks earlier in the year, such as checking addresses and SSNs each quarter, solves these issues. Identify steps to automate as well. Reports, reminders, and electronic form delivery are good places to start.
How BSI Supports Your Year-End Payroll Tasks
A clean year-end depends on the three things we named at the start: verified employee data, reconciled tax figures, and filings finished on time. Doing all of that by hand takes many hours and leaves room for error. Our payroll tax software takes on the most time-consuming steps so your team can focus on review.
ComplianceFactory™ for Filing and Payments
ComplianceFactory™ is our cloud-based solution for payroll tax filing and payment. It helps with the filing steps in this guide, where the deadlines are tight and the penalties are real.
- Files and pays federal, state, local, and territory payroll taxes for you.
- Supports annual reporting, so year-end forms are built from the same data as your filings.
- Sends garnishment payments to the right agencies.
- Lets employees view and print their W-2 forms on demand.
With filing and payments handled in one place, your January workload gets much lighter. You also have clear records ready if an agency ever asks questions.
TaxProfileFactory™ for Accurate Employee Tax Data
TaxProfileFactory™ sets up and maintains each employee’s tax assignments. It helps with the first step of a clean close, which is verified employee data.
- Assigns the correct federal, state, and local taxes based on where each employee lives and works.
- Updates tax profiles automatically when an employee’s information changes.
- Reduces paycheck adjustments and W-2 corrections.
- Cuts the manual research your payroll and HR teams do during the year.
When tax assignments are right all year, there is far less to fix in December. That makes every later step, from reconciling to filing, faster and more accurate.
Recap: Payroll Tasks To Prepare For The End of The Year
A successful year-end follows a clear path: verify, audit, reconcile, file, prepare, and review. Each step builds on the one before it. When your worker data is correct and your totals are balanced, filing becomes the easy part. When a step is skipped, the problem usually shows up later as a corrected form or a penalty notice.
In our experience, starting early is the biggest factor in a clean close. It gives your team time to identify problems, fix them at the source, and file with confidence. The right tools make that work faster and more accurate, especially if you have workers in more than one state. Contact our team at BSI for a demonstration of how our payroll tax software can help your business.
Disclaimer: The information provided in this article is for informational purposes only and should not be considered accounting, tax, or payroll advice. Always consult a qualified professional for guidance specific to your business or situation.
