← ← All Tools
中文

🧾 Federal Income Tax Calculator

Estimate 2025 U.S. federal taxable income, income tax, and effective tax rate for standard-deduction ordinary-income scenarios. Supports four manually selected filing statuses and local-only calculation. Educational estimate only; not tax, legal, or financial advice, and not a filing tool.

This tool only estimates `2025` U.S. federal income tax locally. The current scope is fixed to `federal only`, `standard deduction only`, `ordinary income only`, and `estimate only`. It is not a filing tool and does not determine whether you qualify for a filing status.

This V1 is not for state or local tax, itemized deductions, credits, withholding, refunds, self-employment tax, capital gains, dividends, AMT, NIIT, `qualifying surviving spouse`, `65+ / blind / Schedule 1-A`, or other special-rule scenarios.

  • Does not support `qualifying surviving spouse`.
  • Does not support extra deduction branches for `65+ / blind / Schedule 1-A`.
  • Does not determine `HOH / MFS` eligibility; you must confirm your filing status yourself.
  • Taxable income `< 100,000` uses the IRS `2025 Tax Table`, and `>= 100,000` uses the IRS `2025 Tax Computation Worksheet`.

Only plain digits and standard thousands separators are accepted. Amounts support up to 2 decimals, the maximum is `10,000,000.00`, and `0` is valid.

This page does not determine whether you qualify for `head of household` or `married filing separately`. If you are unsure, confirm that under IRS rules first.

Calculations run locally by default. Your income input is not uploaded, and the page does not collect SSN, ITIN, address, employer ID, or family-member status details.

IRS sources: the credits and deductions for individuals page, Publication 1040, and the federal income tax rates and brackets page; reviewed on 2026-03-10.

Disclaimer: This tool is for educational and informational estimation only. It is not tax, legal, financial, or filing advice, and it does not replace IRS forms, IRS instructions, or professional judgment. Results depend on the filing status and ordinary income you enter and only cover `2025` U.S. federal standard-deduction scenarios.

Privacy note: Calculations run locally by default. Your income input is not uploaded. This page does not collect SSN, ITIN, address, employer ID, or family-member status details.

More tools you might find useful.

📊
Amortization Calculator
Free amortization calculator for generating a payment-by-payment schedule with principal, interest, remaining balance, and yearly summaries for a fixed-rate loan.
📈
APR Calculator
Free APR calculator for estimating APR, monthly payment, and net amount received on a fixed-rate installment loan using the loan amount, quoted annual rate, term, and required finance charges. Educational estimate only; not an official disclosure, lender quote, or financial advice.
🚗
Auto Loan Calculator
Free auto loan calculator for estimating financed amount, monthly payment, total payment, and total interest using vehicle price, down payment, trade-in value, payoff, rebate, taxes, fees, annual rate, and term in months.
⚖️
Break-Even Calculator
Estimate contribution margin, break-even units, and break-even sales from fixed costs, variable cost per unit, and selling price per unit. Educational estimate only; not financial, tax, legal, accounting, or pricing advice.
📊
Inflation Calculator
Estimate equivalent buying power, cumulative inflation, and average annual change between two years using historical U.S. CPI-U annual averages. Educational estimate only; not financial, investment, tax, legal, or budgeting advice.

Federal income tax calculator for estimating 2025 U.S. federal taxable income, income tax, and effective tax rate. Supports standard-deduction ordinary-income scenarios with four manually selected filing statuses. Educational estimate only; not tax, legal, or financial advice, and not a filing tool.