Why use this calculator
Shows the math
Every line is explained step by step, so you can line it up with your pay stub instead of guessing why the numbers differ.
Official 2026 formulas
Built from IRS Publication 15-T and each state's own withholding guide, and tested to the dollar against the IRS tables.
Handles real paychecks
401(k), health and HSA deductions, overtime, the W-4 two-jobs box, dependents, and local taxes. These are the inputs simple calculators skip.
Private and free
No sign-up, no cookies, no tracking. The calculation runs in your browser, so what you type never leaves your device.
Paycheck calculators by state
- Alaska
- Florida
- Illinois
- Michigan
- Nevada
- New Hampshire
- North Carolina
- Pennsylvania
- South Dakota
- Tennessee
- Texas
- Washington
- Wyoming
More states are being added. For a state not listed, the federal, Social Security and Medicare lines still apply; only the state line differs.
Other calculators
Why your estimate and your pay stub differ
Most gaps come from four things: pre-tax benefits your employer deducts (health insurance, HSA, 401(k)); W-4 settings such as the Step 2 box for two jobs; local taxes; and overtime or bonus pay in that check. Withholding is also not your final tax bill. It's a prepayment that gets reconciled when you file.