Federal Income Tax Calculator
Estimate your federal income tax liability for 2025 or 2026 based on your income, filing status, and deductions. This calculator uses official IRS tax brackets.
📅 Tax Year:
Calculate Your Tax
$
Total income before deductions
$
Leave blank to use standard deduction
Additional deduction for 65+ or blind
How It Works
The federal income tax system in the United States uses a progressive tax structure, meaning your income is taxed at increasing rates as it rises through different brackets. This calculator applies the official IRS tax brackets for the selected tax year.
The Calculation Process
- Start with Gross Income: Your total income from all sources (wages, investments, etc.)
- Subtract Deductions: Either the standard deduction for your filing status or your itemized deductions (whichever is greater)
- Calculate Taxable Income: Gross Income − Deductions = Taxable Income
- Apply Tax Brackets: Each portion of income is taxed at its corresponding bracket rate
Tax Bracket Formula
Your tax is calculated by applying each bracket's rate only to the income within that bracket:
Total Tax = (Income in 10% bracket × 0.10)
+ (Income in 12% bracket × 0.12)
+ (Income in 22% bracket × 0.22)
+ ... and so on
For example, a single filer with $75,000 taxable income in 2026 would pay:
- 10% on the first $12,150 = $1,215
- 12% on $12,150 to $49,475 = $4,479
- 22% on $49,475 to $75,000 = $5,615.50
- Total: $11,309.50
Examples
Example 1: Single Filer, $60,000 Income
- Gross Income: $60,000
- Standard Deduction (2026): $15,350
- Taxable Income: $44,650
- Tax: $1,215 + $3,900 = $5,115
- Effective Rate: 8.5%
Example 2: Married Filing Jointly, $150,000 Income
- Gross Income: $150,000
- Standard Deduction (2026): $30,700
- Taxable Income: $119,300
- Tax: $2,430 + $8,958 + $4,477 = $15,865
- Effective Rate: 10.6%
What this calculator does
This page turns the visible tax inputs into a planning estimate that can be checked against official forms and records. It is designed for quick comparison, not as a substitute for professional tax advice.
How to use this calculator
- Enter the filing status, income, deduction, credit, withholding, and other fields that apply to your situation.
- Run the calculator and review the tax estimate, rate, deduction, or planning result shown on the page.
- Compare the result with IRS forms, state rules, and your own records before making payment or filing decisions.
Frequently Asked Questions
Federal income tax calculator 2026 married filing jointly?
Start with the key tax inputs and keep each number easy to verify. For the Federal Income Tax Calculator, start with filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments. Then use: taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Read the result as taxable income, tentative tax, credits, balance due, or refund estimate. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
How much federal tax will I owe on 85000 single 2026?
Separate each tax component so the estimate stays readable and easier to check. The Federal Income Tax Calculator works best when you enter filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments. The planning formula is taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Use the final number for taxable income, tentative tax, credits, balance due, or refund estimate. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
Income tax calculator with standard deduction?
Use this as a planning estimate, then reconcile it with the actual tax forms. Enter filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments in the Federal Income Tax Calculator. A practical formula is: taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Review taxable income, tentative tax, credits, balance due, or refund estimate. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
How to estimate federal tax liability?
Build the estimate in order. First gather filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments. Then apply this working formula: taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. Use the calculator output for taxable income, tentative tax, credits, balance due, or refund estimate. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
Federal tax calculator for head of household?
Keep the inputs practical for this estimate. The Federal Income Tax Calculator works best when you enter filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments. The planning formula is taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Use the final number for taxable income, tentative tax, credits, balance due, or refund estimate. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
How much federal tax should be withheld from paycheck?
Start with the key tax inputs and keep each number easy to verify. Enter filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments in the Federal Income Tax Calculator. A practical formula is: taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Review taxable income, tentative tax, credits, balance due, or refund estimate. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
Taxable income calculator after deductions?
Separate each tax component so the estimate stays readable and easier to check. For the Federal Income Tax Calculator, start with filing status, gross income, adjustments, standard or itemized deductions, credits, withholding, and estimated payments. Then use: taxable income = income - adjustments - deductions, then tax is calculated bracket by bracket. For 2026, the standard deduction is $16,100 for single filers, $32,200 for MFJ, and $24,150 for head of household. Read the result as taxable income, tentative tax, credits, balance due, or refund estimate. Credits, AMT, self-employment tax, and investment taxes can change the final amount.
Use Cases
- Pre-filing check: Estimate how much you'll owe (or get back) before you file your return.
- W-4 adjustment: See how a change in filing status or deductions affects your annual tax to set the right withholding.
- Side-income planning: Add freelance or investment income to your wages to see the combined federal tax impact.
- Retirement distribution planning: Estimate the tax hit of taking a 401(k) or IRA distribution at various income levels.
- Year-over-year comparison: Switch between 2025 and 2026 to see how inflation-adjusted brackets change your tax.
Assumptions & Limitations
- This calculator uses the standard deduction unless you enter a custom deduction amount that exceeds it.
- It does not include the Alternative Minimum Tax (AMT), tax credits (Child Tax Credit, EITC, etc.), or qualified business income deduction (Section 199A).
- Capital gains, dividends, and other investment income are not modeled here — use the Capital Gains Calculator for those.
- FICA taxes (Social Security and Medicare) are not included — see the FICA Calculator or Paycheck Calculator.
- State and local income taxes are separate — use the State Income Tax Calculator.
- Results are estimates for planning purposes. Tax laws change; always verify current IRS rules and consult a qualified tax professional when needed.
Sources & References
- IRS Revenue Procedure 2025-11 — 2026 tax year inflation adjustments for brackets and standard deductions
- IRS Publication 17 — Your Federal Income Tax (general rules for individual filers)
- IRS Form 1040 Instructions — Line-by-line guidance for the individual income tax return
- IRS Topic No. 551 — Standard Deduction amounts
- IRS Publication 501 — Dependents, Standard Deduction, and Filing Information
- 26 U.S. Code § 1 — Tax imposed (statutory tax rate schedule)
Rates and limits reflect IRS guidance current as of January 2026. Verify at irs.gov.