Free US Tax Calculators

Our tax calculators are designed to help you estimate your tax obligations quickly and easily. Each calculator uses the latest IRS tax rates, brackets, and limits for the 2025 and 2026 tax years.

Important: These tools provide estimates only and should not be considered tax advice. Tax laws are complex and change frequently. Always consult IRS publications or a qualified tax professional for your specific situation.

This site offers 30+ free tax calculators organized into eight categories covering the most common US tax scenarios:

• Federal Income Tax: Estimate your federal tax liability, find your marginal bracket, check if you'll get a refund, and compare standard vs. itemized deductions.
• Payroll Taxes: Calculate take-home pay, FICA withholding, bonus tax, overtime pay, and Additional Medicare Tax.
• Self-Employment: Figure your SE tax, quarterly estimated payments, 1099-vs-W-2 comparison, home office deduction, mileage, and business expenses.
• Investing: Compute capital gains tax, dividend tax, Net Investment Income Tax (NIIT), crypto gains, tax-loss harvesting savings, and wash-sale adjustments.
• Deductions & Savings: See the tax benefit of 401(k) contributions, Traditional vs. Roth accounts, HSA contributions, medical expenses, and charitable donations.
• State & Local: Look up sales tax rates, estimate property tax, and calculate state income tax.
• Business: Model Section 179 deductions, MACRS depreciation, and LLC vs. S-Corp tax comparisons.
• Guides: Step-by-step guides for filling out a W-4, making quarterly tax payments, year-end tax planning, and a tax-filing checklist.

If you are a W-2 employee

Start with the Paycheck Calculator to see your take-home pay. Then use the Federal Income Tax Calculator to check your annual tax liability and Refund Estimator to see if you'll owe or get a refund.

If you are self-employed or a freelancer

Begin with the Self-Employment Tax Calculator to see your SE tax. Then use the Quarterly Estimated Tax Calculator to figure your quarterly payments and avoid underpayment penalties.

If you invest in stocks, crypto, or real estate

Use the Capital Gains Tax Calculator for sell-side estimates, the Dividend Tax Calculator for portfolio income, and the Tax-Loss Harvesting Calculator to see how selling losers can offset gains.

If you are planning for retirement

Compare the 401(k) Tax Savings Calculator and the Traditional vs. Roth Calculator to find the best retirement strategy for your income level.

Scenario 1 — Single filer, $75,000 salary

A single W-2 employee earning $75,000 with no dependents would owe roughly $8,600 in federal income tax (2026) after the standard deduction, plus about $5,738 in FICA taxes. Use the Paycheck Calculator to see the per-paycheck breakdown.

Scenario 2 — Freelancer with $100,000 in 1099 income

A self-employed individual earning $100,000 on 1099s owes both income tax and self-employment tax (15.3% on 92.35% of net income). The SE tax alone is about $14,130, and quarterly estimated payments help avoid a large April bill. Use the SE Tax Calculator and Quarterly Estimated Tax Calculator.

Scenario 3 — Married couple with $50,000 in stock gains

A married couple filing jointly with $150,000 in wages and $50,000 in long-term capital gains would pay 0% or 15% on the gains depending on their total taxable income. The Capital Gains Calculator shows the exact split by bracket.

• IRS Revenue Procedure 2025-11 — 2026 inflation-adjusted tax brackets, standard deductions, and limits
• IRS Publication 15 (Circular E) — Employer's Tax Guide (withholding tables, FICA rates)
• IRS Publication 505 — Tax Withholding and Estimated Tax
• IRS Publication 334 — Tax Guide for Small Business (self-employment tax)
• Social Security Administration — 2026 OASDI contribution and benefit base ($184,500)
• IRS Topic No. 409 — Capital Gains and Losses
• IRS Publication 590-A/590-B — Contributions to and Distributions from IRAs
• IRS Free File — Free federal tax filing for eligible taxpayers at irs.gov/freefile

All calculator rates and limits are based on IRS guidance current as of January 2026. Tax laws can change; verify current rules at irs.gov.