Withholding & Planning · 2025
Total Tax Burden Calculator
Enter your gross income and select a state to see your complete 2025 tax picture — federal income tax, Social Security, Medicare, and state income tax combined into a single effective rate and take-home pay figure. Every layer computed from its cited source.
Your information
W-2 wages before any deductions
Adds state income tax to the total
Informational only — not professional tax advice.
Enter your gross income to see your complete tax picture — federal income tax, Social Security, Medicare, and state income tax all in one view.
Methodology
How total tax burden is calculated
This tool computes three independent tax liabilities and sums them. Federal income tax uses the 2025 progressive rate brackets from IRS Rev. Proc. 2024-61 after the standard deduction. FICA is computed as the employee share under IRC §3101: 6.2% on wages up to the Social Security wage base, plus 1.45% Medicare on all wages, plus the 0.9% Additional Medicare Tax on wages above the filing-status threshold. State income tax applies the state's 2025 standard deduction and rate structure per the state's revenue department.
Formula
Federal income tax: Taxable income = Gross income − Federal standard deduction Federal tax = Apply 2025 income tax brackets to taxable income FICA (employee share): Social Security = 6.2% × min(gross income, $176,100 wage base) Medicare = 1.45% × gross income Add'l Medicare = 0.9% × max(0, gross income − AMT threshold) [high incomes only] State income tax: State taxable = Gross income − State standard deduction State tax = Apply state rate schedule to state taxable income Total taxes = Federal + FICA + State Combined eff. rate = Total taxes ÷ Gross income Take-home pay = Gross income − Total taxes
Tax year scope
All figures use 2025 tax year rates: IRS Rev. Proc. 2024-61 for federal brackets and standard deductions; IRS Publication 15 (2025) for FICA rates; the $176,100 Social Security wage base (SSA.gov, October 2024); and each state's 2025 revenue department publication for state rates.
Stated assumptions and limitations
- W-2 wage income only. FICA applies to earned wages. Self-employment income has a different rate structure (Schedule SE, 15.3% combined) — use the Self-Employment Tax Calculator for that scenario.
- Standard deduction for both federal and state. Itemized deductions, above-the-line adjustments, and state-specific credits are not modeled. Federal income tax savings from pre-tax 401k or HSA contributions are also not applied here.
- No employer FICA match. The employer pays a matching 7.65% — this tool shows only the employee's statutory liability.
- Local income taxes excluded. City and county income taxes (New York City, Philadelphia, etc.) are not included.
- Take-home is pre-deduction net pay. The take-home figure reflects income after the three modeled tax layers only. Voluntary deductions such as health insurance premiums, 401k contributions, or FSA elections are not subtracted.
Last reviewed: January 2025. FICA rates and SS wage base are reviewed annually after SSA publishes the COLA fact sheet (typically October) and IRS publishes the updated Publication 15 (typically January).
Frequently asked questions
What does 'total tax burden' include?
This calculator combines three layers of tax that a W-2 employee pays: (1) federal income tax — computed using the 2025 income tax brackets after the standard deduction; (2) FICA taxes — the employee share of Social Security (6.2% on wages up to $176,100) and Medicare (1.45% on all wages, plus 0.9% Additional Medicare Tax on wages above $200,000 for single filers); and (3) state income tax, if you select a state. It does not include property taxes, sales taxes, excise taxes, or the employer's matching FICA contribution.
Why is FICA shown separately from federal income tax?
FICA (Social Security and Medicare) is legally distinct from federal income tax — it's authorized by the Federal Insurance Contributions Act and IRC §3101, not by the income tax statutes. FICA is not reduced by the standard deduction or personal credits; it applies to gross wages from the first dollar. Because FICA is flat-rate on wages (unlike the progressive income tax brackets), many people in lower income brackets actually pay more in FICA than in federal income tax. Showing them separately makes both the structure and the effective rates transparent.
Does this tool account for the employer's FICA match?
No — this tool shows only the employee's share: 6.2% Social Security and 1.45% Medicare. Employers pay a matching 7.65% on top of the employee's wages, but that cost never appears on your pay stub and is not legally your liability. Economists sometimes argue the employer match is an implicit cost to the employee (since it reduces how much the employer can pay in wages), but this tool shows only what the law charges the employee directly.
Why does the combined effective rate differ from my marginal federal rate?
Your marginal federal rate is the rate on your last dollar of taxable income — it's the highest bracket you reach. Your combined effective rate is total taxes paid divided by gross income, and it's almost always lower than your marginal rate for two reasons: (1) progressive brackets mean most of your income is taxed at lower rates, and (2) the standard deduction reduces taxable income before brackets apply. FICA rates are flat (not progressive), which tends to raise the combined effective rate for lower incomes (where FICA is a larger share) and hold steady for higher incomes (once the Social Security wage base is hit).
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