
Federal + FICA + state income tax & levies · 50 states + DC · with 401(k)
Yes. It calculates federal income tax plus employee FICA — 6.2% Social Security up to the wage base and 1.45% Medicare, plus the 0.9% Additional Medicare surtax over the threshold.
Yes — all 50 states and DC (flat, progressive and no-income-tax states), plus mandatory employee payroll levies like California SDI and state paid-leave premiums.
No. It is a free estimate for tax year 2026 from published brackets; it excludes local/city taxes, credits and itemized deductions. Not tax advice.