W-2 Paycheck Calculator 2026

How Your 2026 Paycheck Is Actually Calculated

Your offer letter says one number; your bank account sees another. The gap between gross pay and take-home pay is the sum of five separate withholdings, each with its own rules: federal income tax, state income tax, Social Security, Medicare, and your own pre-tax elections. This calculator models all five using the official 2026 parameters published by the IRS and Social Security Administration.

For 2026, the numbers that matter are: federal brackets adjusted under the OBBBA inflation rules (10% bracket now reaches $12,400 for single filers), a standard deduction of $16,100 single / $32,200 married filing jointly / $24,150 head of household, a Social Security wage base of $184,500, and a 401(k) employee deferral limit of $23,500.

Federal Withholding: Progressive, Not Flat

A common misconception is that moving into a higher bracket taxes all of your income at the higher rate. In reality, only the dollars above each threshold are taxed at that bracket's rate. A single filer earning $80,000 in 2026 pays 10% on the first $12,400 of taxable income, 12% up to $50,400, and 22% only on the slice above that — after first subtracting the $16,100 standard deduction and any pre-tax contributions. That's why the effective rate shown in your results is always lower than your marginal bracket.

FICA: The Tax Everyone Pays

Social Security (6.2%) and Medicare (1.45%) come out of nearly every paycheck regardless of bracket. Two nuances our calculator handles correctly that many don't: Social Security stops once your year-to-date wages cross $184,500 — high earners see their checks jump mid-year — and an extra 0.9% Additional Medicare Tax applies to wages over $200,000. Note that 401(k) contributions do not reduce FICA wages — only Section 125 items like health insurance premiums and HSA contributions do. That distinction alone changes take-home math for anyone with employer benefits.

Pre-Tax Deductions: The Levers You Control

The fastest way to change your take-home pay without changing jobs is through pre-tax elections. A traditional 401(k) contribution reduces your federal and state taxable income dollar-for-dollar — at a combined 27% marginal rate, maxing the $23,500 limit saves over $6,300 in tax. HSA contributions ($4,400 individual / $8,750 family in 2026) are triple-advantaged: pre-tax going in, tax-free growth, tax-free out for medical costs — and unlike the 401(k), they reduce FICA wages too. Employer health premiums under a Section 125 cafeteria plan work the same way. Use the deductions panel above to model each.

State Taxes: A 0% to 12.3% Swing

Where you live changes the verdict more than almost any other input. Nine states levy no wage income tax. At the other end, California's top rate reaches 12.3%, New Jersey's 10.75%, and New York's 10.3% with progressive brackets. For a $120,000 earner, the difference between Texas and California is roughly $7,000 a year in take-home pay. This calculator includes full progressive brackets for CA, NY, and NJ, flat rates for states like Pennsylvania (3.07%) and Illinois (4.95%), and zero for the no-tax states.

Reading Your Results

The breakdown shows each withholding per pay period — weekly, biweekly, semimonthly, or monthly — alongside your annual totals, effective rate, and marginal rate. Try the what-if scenarios to see how maxing your 401(k), moving states, or adding extra W-4 withholding changes the bottom line, then save or email the result for your records.