Why the fact sheet number matters
Most of what is written about this deduction online was published around the January 2026 FAQ and never updated. That version has been superseded, and the August FS-2026-13 revision was not cosmetic — it added the withholding mechanism, hardened the reporting requirement, and spelled out the federal-employee rules. The IRS deliberately keeps superseded versions online so you can tell which one you are looking at. Check the FS number in the header before you trust a summary, including this one.
The three rules most summaries get wrong
1. From 2026, no W-2 entry means no deduction. 26 U.S.C. §225(a) allows the deduction only for qualified overtime included on the statements your employer furnishes. The 2025 relief that let you compute it yourself does not carry forward. If box 12 code TT is blank or understated, the remedy is a Form W-2c from your employer — and a substitute W-2 (Form 4852) does not work, because it is not furnished under the provision the statute names.
2. An overstated W-2 does not entitle you to more. If your employer reports more qualified overtime than it actually paid you, you may only count what you were actually paid. The reported figure is a ceiling, not a licence.
3. Your employer cannot lower your withholding for you. Overtime remains subject to income tax withholding, and an employer may not reduce it to account for this deduction unless you furnish an updated Form W-4. The 2026 Form W-4 added step 4(b) for the purpose, and the IRS Tax Withholding Estimator was updated to handle it. This is the only supported way to feel the benefit during the year rather than at filing.
Guidance aimed at groups that usually get ignored
FS-2026-13 devotes a full topic to federal employees: FLSA eligibility is recorded on your Standard Form 50 at block 35 (“N” means overtime-eligible, “E” means exempt), OPM administers the FLSA for most federal workers, and the one-half portion of the OPM overtime formula is the qualified amount. It also covers compensatory time — for state and local government employees, comp time earned under section 207(o) is not qualified overtime when it is earned, only when it is later paid out as wages — and confirms that residents of U.S. territories may be eligible, but not for overtime excluded from U.S. gross income.
Read the rule, then run your number
The statute is short enough to read in a few minutes and settles most arguments. Once you have, the no tax on overtime calculator sizes the deduction for your rate and hours, the worked examples show the arithmetic step by step, and how to claim covers the filing mechanics.