Federal income tax uses 2026 IRS tax brackets and standard deduction applied to your adjusted gross income (salary minus pre-tax deductions). State income tax uses 2026 Tax Foundation bracket data.
Social Security is 6.2% on wages up to the 2026 wage base of $176,100. Medicare is 1.45% on all wages, plus an additional 0.9% on wages above $200,000 (single) or $250,000 (married filing jointly).
401k contributions reduce your federal and state income tax but not Social Security or Medicare. The 401k impact note shows your estimated tax savings using your effective income tax rate, making the true take-home cost of contributing visible.
Health insurance and HSA are treated as pre-tax under Section 125. ESPP is an after-tax deduction and does not reduce taxable income.
Does not include local or city taxes (NYC, Philadelphia, etc.), bonus withholding, or multiple income sources. Planning estimate only.