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Federal Income Tax Calculator 2026

Free federal income tax calculator for tax year 2026. Estimate your federal tax owed, FICA, effective rate, marginal rate, and take-home pay. Uses official IRS 2026 brackets.

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Enter your annual income and filing status to estimate your federal income tax, FICA, effective rate, marginal rate, and take-home pay for tax year 2026.

Total wages, salary, and bonus before any deductions.

Traditional only. Roth 401(k) is post-tax.

Leave at 0 to use the standard deduction (we’ll pick the larger of the two).

Take-home pay (annual)

Federal income tax

FICA (SS + Medicare)

Effective rate

Marginal rate

Bracket-by-bracket breakdown

Bracket Taxed in this bracket Tax
Fill the form to see results.

How federal income tax is calculated in 2026

The US federal income tax is a progressive tax. Different slices of your taxable income are taxed at different rates. The IRS publishes new bracket thresholds every year, indexed to inflation under Rev. Proc. 2025-32 (for tax year 2026).

The calculation has four steps: (1) start with gross income, (2) subtract pre-tax adjustments (traditional 401(k), HSA, certain other contributions) to get AGI, (3) subtract the standard deduction or itemized deductions (whichever is larger) to get taxable income, (4) apply the bracket schedule to taxable income.

Separately, FICA (Social Security + Medicare) is calculated on gross wages. Social Security applies the 6.2% rate up to a wage base ($176,100 for 2026 per SSA). Medicare is 1.45% with no cap, plus an additional 0.9% on wages above $200,000 (single) or $250,000 (MFJ).

What this calculator does NOT include

  • State or local income tax, see our state-specific paycheck calculators.
  • Self-employment tax (for 1099 income), see our self-employment tax calculator.
  • Capital gains, dividend income, AMT, and other items that may apply to your full return.
  • Tax credits (EITC, CTC, education credits, etc.). This calculator estimates pre-credit tax.

Worked example

Take a married couple filing jointly with $120,000 of gross wages, no traditional 401(k) or HSA contributions, and no itemized deductions worth more than the standard deduction. Start with the $120,000 gross. Because there are no pre-tax adjustments, adjusted gross income stays at $120,000. Subtract the 2026 standard deduction for joint filers, $31,500, to land on taxable income of $88,500. The progressive schedule then taxes that $88,500 in two slices: the first $23,850 at 10%, which is $2,385, and the remaining $64,650 at 12%, which is $7,758. Federal income tax totals $10,143. FICA is figured separately on the full $120,000: Social Security at 6.2% is $7,440 and Medicare at 1.45% is $1,740, for $9,180. Take-home pay is $120,000 minus $10,143 minus $9,180, which is $100,677, roughly $8,390 per month.

Step Amount
Gross income$120,000
Standard deduction (MFJ)-$31,500
Taxable income$88,500
10% bracket (first $23,850)$2,385
12% bracket (next $64,650)$7,758
Federal income tax$10,143
FICA (SS $7,440 + Medicare $1,740)$9,180
Take-home pay$100,677
Where $120,000 of gross pay goes Take-home $100,677 Take-home pay: $100,677 (83.9%) Federal income tax: $10,143 (8.5%) FICA (SS + Medicare): $9,180 (7.7%)

How it is calculated

Federal income tax in the United States is progressive, so no single rate applies to your whole income. The IRS sets seven bands for 2026, from 10% up to 37%, with thresholds that depend on your filing status and are indexed to inflation under Rev. Proc. 2025-32. The tool first reduces gross income by pre-tax 401(k) and HSA contributions to find adjusted gross income, then subtracts the larger of the standard deduction or your itemized deductions to find taxable income. Each band only taxes the slice of taxable income that falls inside it, which is why your marginal rate, the rate on your last dollar, is higher than your effective rate, total tax divided by income. FICA is layered on top of income tax and is charged on gross wages, with Social Security capped at the $176,100 wage base and Medicare uncapped plus a 0.9% surtax above $200,000 single or $250,000 joint.

Frequently asked questions

What are the 2026 federal income tax brackets?
For 2026 single filers, brackets are 10% (up to $11,925), 12% ($11,925–$48,475), 22% ($48,475–$103,350), 24% ($103,350–$197,300), 32% ($197,300–$250,525), 35% ($250,525–$626,350), and 37% (above $626,350). Married-filing-jointly thresholds are roughly double. Always verify against IRS Rev. Proc. 2025-32.
What is the difference between effective and marginal tax rate?
Your marginal rate is the rate on your last dollar earned (the bracket your highest income falls into). Your effective rate is total federal tax divided by total income, almost always lower than your marginal rate because the lower brackets tax earlier dollars at lower rates.
Does this calculator include state tax?
No. This is a federal-only calculator. State income tax, state disability insurance (SDI), and local taxes vary by state and are handled by our state-specific paycheck calculators.
How does pre-tax 401(k) contribution reduce my tax?
Traditional 401(k) contributions reduce your taxable income dollar-for-dollar up to the IRS contribution limit ($23,500 in 2026, plus $7,500 catch-up if 50+). HSA contributions work the same way. Roth 401(k) contributions do NOT reduce taxable income, they are after-tax.
When are these brackets verified?
The brackets are checked against IRS Publication 15-T and the related revenue procedure for the tax year shown. The "Last updated" date above reflects the most recent check.

Related calculators

Sources

  1. IRS Publication 15-T (2026) — Federal Income Tax Withholding Methods, Internal Revenue Service
  2. IRS Rev. Proc. 2025-32 — 2026 Inflation Adjustments, Internal Revenue Service
  3. Social Security Administration — Contribution and Benefit Base 2026, Social Security Administration
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