Tax Calculators
Estimate federal tax, refunds and self-employment tax with current IRS figures. 8 free calculators, each with its formula and a worked example.
Other categories
Income tax
Income Tax CalculatorEstimate 2026 or 2027 federal income tax with your bracket, marginal rate and effective rate.Tax Refund CalculatorEstimate your federal refund or balance due from W-2 wages and withholding, and fix your withholding.Capital Gains Tax CalculatorEstimate the gain on a sale and the federal tax on it, short-term or long-term, plus the 3.8% NIIT.
Self-employed and employers
Self-Employment Tax & 1099 Tax CalculatorEstimate self-employment tax and federal income tax on 1099 income, with the deductions that apply.Quarterly Tax CalculatorWork out quarterly estimated tax payments with the IRS safe-harbor rules and the due dates.Payroll Tax CalculatorSee the payroll taxes an employer pays and withholds: Social Security, Medicare, FUTA and state unemployment.
Property and purchases
Which calculator answers your question?
- How much federal income tax will I owe?
- Income Tax Calculator: tax, bracket and effective rate for 2026 or 2027, with the standard deduction and credits.
- Will I get a refund or owe?
- Tax Refund Calculator: your estimated refund or balance due from income, withholding and credits.
- How much tax will I pay when I sell stock or a home?
- Capital Gains Tax Calculator: short- and long-term capital gains tax, the 3.8% net investment income tax and the home sale exclusion.
- How much self-employment tax do I owe?
- Self-Employment Tax & 1099 Tax Calculator: Social Security and Medicare tax on freelance or 1099 profit, and the deduction for half of it.
- How much should I pay each quarter?
- Quarterly Tax Calculator: estimated tax payments and the safe-harbor amount that avoids an underpayment penalty.
- What do payroll taxes cost an employer?
- Payroll Tax Calculator: employer and employee Social Security, Medicare, FUTA and state unemployment tax.
How these calculators work
Every calculator here shows the formula it uses, a worked example and the assumptions behind the result. Figures that change each year, such as tax brackets and contribution limits, carry the year they apply to and the official source. Everything runs in your browser: you don't sign up, and nothing you type is sent anywhere.
Read our calculator methodology →
