Every January, employers fill in a short alphabet of letter codes down the side of Form W-2’s box 12, each one steering a different kind of pay or benefit toward the right line on a tax return. For the form covering the 2026 tax year, that alphabet gains three entries that have never existed before. The Internal Revenue Service’s 2026 General Instructions for Forms W-2 and W-3 name them one by one: TA, TP and TT, each built to carry a single, consequential number off the form and onto a return. Leave one blank, and the number it was meant to carry may never reach the return it was built for.
Three Codes, Three Different Jobs
Box 12 already runs from code A, for uncollected Social Security or railroad retirement tax on tips, through code II, for Medicaid waiver payments excluded from income — close to two dozen entries built up over decades of tax law changes. Codes TA, TP and TT are new additions for tax year 2026, and all three trace back to a single law, the tax package widely known as the One, Big, Beautiful Bill and formally cited as Public Law 119-21.
Code TP reports the total cash tips an employee reported to an employer during the year. Code TT reports qualified overtime compensation, the portion of time-and-a-half pay that sits above an employee’s regular rate under section 7 of the Fair Labor Standards Act. Code TA reports employer contributions to a Trump account, a new type of traditional individual retirement account that Public Law 119-21 created for a child who has not yet turned 18. Each code is doing a narrow, specific job that did not exist on any earlier version of the form.
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Code TP Puts a Number Behind the Tips Deduction
The reason code TP exists is the deduction it feeds. Under Public Law 119-21, workers in occupations the IRS lists as customarily and regularly tipped as of December 31, 2024 can deduct up to $25,000 in qualified cash tips for tax years 2025 through 2028, with the deduction phasing out once modified adjusted gross income passes $150,000 on a single return or $300,000 on a joint one. Mandatory service charges added to a bill do not count toward that figure; only voluntary cash and charged tips, including tips split through a tip-sharing arrangement, qualify as reportable tips.
The deduction itself is calculated on Schedule 1-A, the new attachment the IRS finalized this spring for the return that reports these tips. Before code TP existed, an employee’s reported tip total had to be pulled together from other parts of the W-2, from pay stubs, or from separate employer statements. Starting with the 2026 form, that figure gets one dedicated home, verified by the employer and carried straight into box 12.
Code TT Carries the Overtime Deduction’s Proof
Code TT works the same way for overtime pay. The related deduction runs up to $12,500 for a single filer or $25,000 for a married couple filing jointly, for the same tax years 2025 through 2028, with the same $150,000, or $300,000 for joint filers, modified-adjusted-gross-income phaseout that applies to the tips deduction. Married filers must file a joint return to claim it, and the deduction is available whether a household itemizes or takes the standard deduction.
Only the premium portion of time-and-a-half pay counts toward that number — the base hourly rate an employee already earns for the hour is not part of the qualified overtime figure at all. That distinction is exactly why a dedicated code matters: box 12 code TT is meant to isolate just the premium amount an employer already tracks for payroll purposes, so a filer working from a W-2 does not have to separate it out by hand or guess at the split.
Code TA Follows Money Into a Child’s New Account
Code TA covers entirely different ground. Beginning July 4, 2026, an employer may contribute up to $2,500 a year into a Trump account on behalf of an employee or an employee’s dependent, and that contribution is excluded from the employee’s taxable wages when it is paid under a formal, employer-run Trump account contribution program. The account itself, created under section 128 of the tax code, caps total contributions from every source combined — employer money included — at $5,000 a year, a figure set to rise with inflation after 2027.
Unlike TP and TT, code TA does not feed a line on Schedule 1-A or reduce anyone’s taxable income directly through a deduction claimed at filing. It exists so the employer’s contribution has a paper trail: documented proof that the money went into the account under the program, rather than showing up, unexplained, as ordinary taxable pay in box 1.
What a Missing Code Costs at Filing Time
For tips and overtime, the cost of a blank box 12 is a broken chain of proof. The general instructions state plainly that tips must be reported to claim the deduction, and a 2026 W-2 that omits code TP leaves an employee without the employer-verified figure the return is built to check against. That can mean a deduction that goes unclaimed altogether, gets questioned by the IRS during processing, or has to be reconstructed from pay stubs and tip logs well after the fact. Code TT works the same way on the overtime side: no reported figure in box 12, no clean, documented path to the write-off on Schedule 1-A.
A missing code TA carries a quieter but still real cost. Without it, an employer’s Trump account contribution has no documented basis for exclusion from box 1 wages, and the family loses the one clear W-2 record that ties the payment back to the account’s $5,000 annual ceiling. Either gap turns what should be a routine box 12 entry into a problem an employee has to chase down months after the paycheck that generated it has already cleared.
Box 12 Now Decides Whether the Deduction Sticks
A new letter code in box 12 does not guarantee a clean deduction. A transposed digit, a payroll system that mislabels the amount, or an IRS mismatch flag can turn a straightforward tips or overtime claim into a stalled refund, and most households have no printed plan for what to do once that notice shows up. The clock on a refund does not pause while someone figures out which form answers it.
The IRS Refund Recovery Kit is a 13-page kit built around the refund-trace steps on Form 3911, laid out for exactly this kind of stalled-refund moment.
Open the notice decoder in The IRS Refund Recovery Kit.
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