W-2 Box 12 Code TT: What It Means (Tax Year 2026)
W-2 box 12 code TT reports the qualified overtime premium your employer paid in tax year 2026. It is a starting amount for the deduction, not your full overtime wages, final deduction, or tax refund.
Use this guide to read the form before entering figures into the no tax on overtime calculator. Tax year 2026 is filed in early 2027; the year on your W-2 determines which reporting rules apply.
What code TT on your W-2 box 12 means
Code TT identifies qualified overtime compensation: the eligible FLSA-required premium above your regular rate. For ordinary time-and-a-half pay, that usually means the extra half-rate portion. It does not mean all wages earned during overtime hours.
Starting with tax year 2026, employers must report that amount separately using code TT. The wages remain included in the applicable W-2 wage boxes; do not add TT to box 1 a second time. The deduction introduced by OBBBA Section 70202 applies to tax years 2025 through 2028, subject to the return-level rules.
No tax on overtime W-2 reporting: two different tax years
| Tax year | Separate employer reporting | If the amount is missing |
|---|---|---|
| Tax year 2025 | Transition relief; no mandatory code TT entry. | Use a permitted reasonable method under Notice 2025-69 and the applicable Schedule 1-A instructions. |
| Tax year 2026 | Report qualified overtime in box 12 using code TT. | Request Form W-2c before using omitted or understated qualified overtime. The earlier relief does not continue. |
How your employer calculates the code TT amount
Under the ordinary weekly FLSA method, payroll calculates the required premium for each workweek and totals the qualified amounts paid during the tax year. The regular rate may include nondiscretionary bonuses, shift differentials, or other includable pay; it can differ from the base hourly rate on a job offer.
How much should code TT be? An ordinary weekly example
Qualified weekly premium = eligible hours over 40 × regular rate × 0.5.
For a covered, nonexempt employee working 46 hours at a $24 regular rate, with no bonuses or other adjustments: 6 × $24 × 0.5 = $72 of qualified overtime. The full pay for those six hours is 6 × $24 × 1.5 = $216. Code TT tracks the $72 premium in this fictional example, not the $216 of full overtime earnings.
Do not apply this example to every work arrangement. Alternative FLSA methods and federal employees under OPM rules can use different thresholds, work periods, and hours. Ask payroll which method it used. See our explanation of qualified overtime compensation to distinguish the eligible premium from total overtime pay.
Your employer reports the full qualified amount, even when it is above $12,500 or $25,000. Household income and deduction caps are applied on your return, not by lowering payroll's code TT entry.
Sources: IRS FS-2026-13 Q10–Q17; DOL Fact Sheets 23 and 56A.
Code TT vs. your own estimate
Compare the premium with the premium, rather than with a paystub line that includes straight-time pay. Reconcile actual workweeks, the regular rate for each week, payment dates, and any adjustments. A rough annual estimate using today's rate can miss rate changes or bonus adjustments.
- Check whether the paystub's overtime line is full time-and-a-half pay or only the additional premium.
- Separate FLSA-required amounts from extra holiday, weekend, state, or contract premiums; their labels alone do not establish eligibility.
- Reconcile each employer separately before combining amounts on your return.
What to do if your W-2 has no code TT
First check the tax year and whether you received qualified overtime. A blank field for tax year 2025 can reflect transition reporting relief. For tax year 2026, ask payroll to explain the omission and furnish Form W-2c if a qualified amount was left out.
Follow the three-step checklist and copy the payroll email in our code TT missing guide. If you need to check whether your work qualifies first, see who qualifies for the overtime tax deduction.
W-2 box 12 code TT: estimate your deduction
The tool covers tax years 2025 and 2026. For tax year 2026, enter the supported reported amount and the qualified overtime actually paid, then complete filing status, eligibility, MAGI, and taxable income before the overtime deduction. For tax year 2025, use a qualified amount supported by that tax year's permitted records.
Estimated federal income tax savings from the deduction — not your refund. The estimate compares federal income tax before and after the allowed deduction; actual refunds also depend on withholding, credits, and the rest of the return.
Estimate the deduction from your qualified amount
Estimated federal income tax savings from the deduction — not your refund.
Enter your filing status, eligibility, MAGI and taxable income. Confirm the actual qualified amount with payroll; an hours-based estimate alone does not prove code TT is wrong.
FAQ
Is code TT the amount I can deduct?
Not necessarily. It is the reported qualified overtime amount. Your return applies eligibility rules, a $12,500 cap ($25,000 for a joint return), and the MAGI limitation. Married taxpayers must file jointly to claim the deduction, and an employment-valid Social Security number is required.
How does MAGI reduce the overtime deduction?
The phaseout starts above $150,000 of MAGI, or $300,000 for a joint return. The deduction is reduced by $100 for each full $1,000 above that threshold. Use the applicable Schedule 1-A instructions; MAGI is not necessarily the same as wages or taxable income.
Should my employer limit code TT to $12,500?
No. Payroll reports the full qualified overtime paid. The employee applies the deduction cap and income limitation on the return. A code TT amount above the cap is not, by itself, a reporting error.
What if I have code TT on W-2s from multiple jobs?
Reconcile each employer's amount separately, then combine the supported qualified amounts for the return. The deduction cap applies per return, not per job. A joint return combines both spouses' qualifying amounts under the $25,000 joint cap.
Can federal employees use the same overtime formula?
Federal employees covered by OPM's FLSA regulations have separate rules for hours, work periods, and regular rates. Their SF-50 block 35 generally shows N for nonexempt or E for exempt. Ask agency payroll which rules apply instead of assuming that only hours above 40 count.
What if code TT is missing or incorrect?
For tax year 2026, request Form W-2c to correct an omitted or understated amount before using the increase. If code TT is overstated, use no more than the qualified overtime actually paid. A personal worksheet does not replace the required employer reporting.
Does no tax on overtime mean a bigger refund or no payroll taxes?
The deduction can reduce federal income tax, but it does not generally remove Social Security, Medicare, or income tax withholding from overtime wages. Your actual refund also depends on withholding, credits, and the rest of your return. A deduction estimate is not a refund estimate.
Sources
Official sources checked 2026-10-02. Read the instructions for your tax year before filing. This guide and its fictional example provide educational information, not advice for an individual return.
- IRS FS-2026-13: qualified overtime FAQs, including Q20–Q22
- IRS: questions and answers about qualified overtime compensation
- IRS: what to know about the no tax on overtime deduction
- IRS: General Instructions for Forms W-2 and W-3, tax year 2026
- IRS Schedule 1-A, tax year 2025: deduction limits and MAGI worksheet
- DOL Fact Sheet 23: overtime pay requirements
- DOL Fact Sheet 56A: the regular rate of pay