Quick Answer: Your pre-year end payroll checklist should include reviewing new OBBBA wage codes, collecting missing 1099 tax forms, and aligning your payroll accounts with your general ledger. Completing this cleanup in September protects your business against hidden withholding errors and helps you avoid last-minute tax filing scrambles.
Key Takeaways:
- Looking at your payroll in late Q3 gives you time to retroactively audit and fix 2026 OBBBA Box 12 overtime and tip tracking before the year closes.
- Auditing your $600 contractor thresholds for missing W-9s and calculating your IRS 12-month tax liability lookback now prevents unexpected failure-to-deposit penalties.
- Reconciling your general ledger against your quarterly Form 941 filings before Q4 lets you make balancing adjustments through routine payroll runs instead of issuing corrected W-2s in January.
If you’ve been handling payroll using the highly-advanced “set it and forget it” method, I’m urging you not to let it “set” until year-end.
Because waiting until January to catch payroll discrepancies a lot of times means IRS notices and accountant cleanup fees… right in the middle of your busiest season.
Let’s get into a proactive mindset right now so you can audit your registers and balance your ledger before year-end closes in.
When should you start year-end payroll cleanup?
Before Q3 closes is the optimal time to complete items like auditing your payroll registers, retro-rating misclassified hours, and making balancing ledger adjustments on your quarterly filings. By catching variances early, you can resolve them the easy way, through your normal payroll runs. Otherwise, you’d have to deal with the hassle of paying reprocessing fees and issuing corrected W-2c forms. (And even potentially taking on IRS failure-to-deposit penalties during the holidays).
Here’s the emergency checklist to lock in your payroll compliance before Q4.
1. Audit OBBBA overtime and tip tracking
Because the IRS finalized Box 12 Code TT and Code TP rules in early 2026, most payroll software platforms didn’t launch any kind of automatic tracking until mid-year. Which means if your software was patched mid-year, or if your earnings codes weren’t mapped to the new IRS boxes, your Q1 and Q2 overtime and tip data is likely unclassified. You need to manually retro-rate your year-to-date payroll registers before Q3 closes to avoid issuing corrected W-2s (Form W-2c) in January.
Under the OBBBA, you have to itemize FLSA overtime pay and qualified tips in Box 12 on your employees’ 2026 Form W-2:
- Code TT for mandatory FLSA premium overtime pay.
- Code TP for reported cash and charged tips.
Pull a year-to-date wage summary report from your payroll provider now and verify that your software has been tagging and routing these earnings types to these respective Box 12 codes since January 1.
If your system has been pooling overtime into generic gross wages, you’ll have to go in and retro-rate those hours. So export your payroll registers for Q1, Q2, and Q3 and calculate the qualified overtime and tip totals for each employee. Then, update the earnings codes in your payroll system before processing your final Q3 payroll.
Do employers need to withhold federal tax on overtime and tips under OBBBA?
As an employer, you need to keep withholding federal income tax, FICA (Social Security and Medicare), and state taxes on all overtime and tip wages like normal. The OBBBA’s no tax on overtime and tips benefit is an individual income tax deduction that your Lynnwood employees claim on their personal tax returns, not an employer payroll withholding exemption.
If you stopped tax withholding on your employees’ tips or overtime earnings this year, your employees could face large, unexpected tax bills when they file their returns. (Not to mention IRS failure-to-withhold penalties for your business.)
Double-check your payroll software settings to make sure your standard federal, state, and FICA tax withholdings are active across every wage type.
2. Track your 1099 contractor threshold
To track the 1099 threshold, run a year-to-date vendor payment report to find every Seattle independent contractor who’s reached (or is approaching) $600 in payments. Make sure you have a signed Form W-9 on file for each vendor now so you get accurate Form 1099-NEC filings and avoid mandatory backup withholding penalties.
Don’t wait until you have to send a polite email in December asking a former contractor for a W-9. Because once that contractor has been paid in full, you lose your leverage.
My rule for clients is the no W-9, no check policy: never release a vendor’s check or finalize a direct deposit once their total payments hit $500 until that signed W-9 is physically in your inbox. Chasing a contractor while you hold their payment takes 5 minutes. Chasing them 6 months later during the holiday rush takes weeks.
How do I track the $600 1099 contractor threshold before year-end?
Have your accounting team run a year-to-date vendor payment report filtered for payments nearing or over $600, then verify active W-9s before releasing further disbursements. Focus on sole proprietors, LLCs, and unincorporated vendors nearing or over the $600 mark.
Cross-reference that list against your active tax files to confirm you have a valid, signed W-9 with their legal name, address, and Taxpayer Identification Number (EIN or SSN).
3. Check your tax deposit schedule
To verify your payroll tax deposit schedule, calculate your total tax liability on Form 941 over the IRS 12-month lookback period (July 1, 2024, through June 30, 2025). If your tax liability exceeded $50,000 during that time, the IRS automatically transitions your Lynnwood business from a monthly depositor to a semi-weekly deposit schedule.
But they don’t send you a warning before they change your filing requirements like this. Which means if you crossed that threshold during the lookback period and kept paying taxes on your old monthly schedule, you’ve been accumulating failure-to-deposit penalties (ranging from 2% to 15%) on every pay period.
How do I know if my IRS payroll tax deposit schedule has changed?
Here’s how you can check:
1. Pull your quarterly Form 941 returns for the four lookback quarters:
- Q3 2024 (July–Sept 2024)
- Q4 2024 (Oct–Dec 2024)
- Q1 2025 (Jan–March 2025)
- Q2 2025 (April–June 2025)
2. Add up the total tax reported on Line 12 across those four quarters.
- $50,000 or less: you’re still a monthly depositor (taxes due by the 15th of the following month).
- Over $50,000: you’re a semi-weekly depositor for all of 2026.
If you find out you should be on a semi-weekly schedule, update your payroll software settings right away, and come talk to me so we can minimize any accumulated IRS notice penalties before year-end.
4. Reconcile payroll summaries with your general ledger
To reconcile your payroll ledger, compare your year-to-date payroll reports (Q1, Q2, and Q3) against your general ledger expense and liability accounts. Look for things like manual checks, voided paychecks, third-party sick pay, or unrecorded fringe benefits that have mismatched what your general ledger says you paid and what your payroll system actually reported to the IRS.
If you don’t catch variances now, you could file a Q4 Form 941 or Form W-2 that doesn’t match your annual tax return (and bring on automatic IRS reconciliation notices).
Run a year-to-date payroll summary report from your payroll software and a trial balance/general ledger report from your accounting software. Compare them side by side in three core areas:
- Gross wages. Does your payroll expense account match total gross wages reported across Q1, Q2, and Q3?
- Tax liabilities. Do federal income tax, Social Security, and Medicare withholdings on your ledger match the liability totals in your payroll system?
- Employer taxes. Are your employer-side FICA and unemployment tax expenses properly recorded?
If you want a 30-second snapshot of whether your payroll is broken, look at your Payroll Clearing Account balance on your balance sheet. In a clean set of books, that clearing account should drop to $0.00 after every payroll run.
If you see a lingering balance accumulating in that account across Q1, Q2, and Q3, it means your payroll processor is pulling funds that aren’t properly matching your general ledger liabilities. (A warning sign that your Q4 941 filings won’t match your books.)
Final thoughts
I’d hate for unresolved payroll discrepancies to turn your holiday season into a high-stress cleanup situation. Once the last quarter of the year gets moving, you won’t have time for auditing wage codes and chasing down missing W-9s.
Let’s get you in position for a stress-free year-end. We can run a diagnostic review of your current payroll setup and reconcile your year-to-date general ledger against your actual quarterly tax filings.
FAQs
“What should I do if my payroll software did not track OBBBA overtime or tips earlier in 2026?”
Ideally, you should audit year-to-date payroll registers and retro-rate qualified hours before filing your Q3 Form 941. Recalculating these figures in Q3 allows you to process balancing adjustments before year-end so you can avoid corrected W-2 filings in January. Export your Q1 through Q3 detailed payroll registers into a spreadsheet and isolate all FLSA overtime and tips. And update employee wage tags in your payroll software before running your final Q3 payroll to prevent expensive year-end cleanup fees.
“Why did the IRS change my payroll tax deposit schedule?”
The IRS automatically shifts your business from a monthly to a semi-weekly tax deposit schedule if your total reported payroll tax liability exceeded $50,000 during the 12-month lookback period (July 1, 2024, through June 30, 2025). Going over this threshold legally mandates semi-weekly tax deposits. Continuing to pay on your old monthly schedule lands you IRS failure-to-deposit penalties on every payroll run.
“What is the deadline for fixing payroll ledger discrepancies before year-end?”
The deadline to adjust your 2026 payroll records within routine processing is December 31, followed by the January 31 IRS tax filing deadline. However, September 30 (the end of Q3) is your ideal operational target to catch errors early, so you have the entire fourth quarter to process smooth balancing adjustments. Aiming for September 30 gives you a full three-month buffer to fix ledger mismatches during your standard payroll runs.
“What happens if I forget to report overtime or tip codes on Box 12 of a W-2?”
Leaving mandatory OBBBA codes off your W-2s triggers IRS information return penalties under IRC Section 6721, ranging from $60 to $340 per incorrect form depending on how quickly you file a correction. If the IRS determines you intentionally ignored the reporting rule, fines jump to $680 per form with no maximum cap. And beyond government fines, filing W-2s without Code TT (overtime) or Code TP (tips) deprives your employees of the deductions they can claim on their personal returns.
“What should I do if my general ledger doesn’t match my quarterly payroll tax filings?”
Compare gross wages, tax expenses, and liability accounts on your general ledger against your quarterly Form 941 filings. Identify unrecorded checks or misclassified deductions and post correcting journal entries before closing Q3. A side-by-side audit of your trial balance and payroll summary does the trick to isolate the variance. Talk to me about it, and I can post adjusting entries before September 30 so your financial ledger matches your tax filings perfectly.
“How do I fix payroll misclassifications before filing W-2s?”
Fix payroll misclassifications by updating employee wage tags in your payroll system and processing a year-to-date manual payroll adjustment before running your final Q3 payroll. This guarantees correct wage routing on Form W-2. Identify affected employees, recalculate misclassified earnings, and adjust historical wage categories directly within your payroll software. Then confirm the updated totals on your draft Q3 Form 941 before submitting.