Obizworks

US Salary Income Tax Calculator

Federal + FICA + state income tax & levies · 50 states + DC · with 401(k)

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Inputs

Gross wages before taxes. Excludes pre-tax health premiums (not modeled).
401(k) — traditional, pre-tax
Reduces federal & state taxable income — but is still subject to Social Security & Medicare.

Result

Net take-home (annual)
Take-home / month
Total tax (annual)
Effective tax rate

Common questions

Does this include Social Security and Medicare?

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.

Are state taxes included?

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.

Is this an official IRS calculation?

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.