Free Tax Calculators

Most Popular Calculators

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Lottery Tax Calculator

Estimate federal and state taxes on your lottery winnings. Use our calculator to find out how much you’ll owe, by state.

Calculate Lottery Tax
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Tax Bracket Calculator

Find your tax bracket for 2024 and 2025. Calculate your marginal rate and total federal income tax liability.

Calculate Tax Bracket
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Self-Employment Tax Calculator

Estimate your total self-employment tax liability and rate, including your Social Security and Medicare taxes, to better plan for quarterly payments. 

Calculate Self-Employment Tax
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Adjusted Gross Income Calculator

Calculate your AGI to see your taxable income after eligible deductions like student loan interest or retirement contributions.

Calculate Adjusted Gross Income
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Gift Tax Calculator

Calculate your federal gift tax rate and liability when you exceed the annual exclusion. Determine how much you may owe and when to file. 

Calculate Gift Tax
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Bitcoin Tax Calculator

Estimate your capital gains tax on your bitcoin transactions. Calculate taxes on sales, trades, or payments to stay compliant and optimize your strategy. 

Calculate Bitcoin Tax

Even More Calculators

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Refund Booster W-4 Calculator

Adjust your W-4 to boost your refund or avoid overpaying with our form W-4 calculator. See how changes impact your take-home pay. 

Calculate W-4 Refund
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Inflation Rate Calculator

See how much prices have risen over time and the real value of your money. Measure past or future dollars. 

Calculate Inflation Rate
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Savings Calculator

Find out how much tax you’ll owe on interest earned from savings accounts. Use our tax savings calculator to plan ahead.

Calculate Savings Taxes
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Earned Income Tax Credit Calculator

Find out if you are eligible for the EITC and estimate your credit amount based on income, dependents, and filing status.

Calculate Earned Income Tax Credit
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Crypto Tax Calculator

Estimate capital gains tax on all your cryptocurrency activity. Learn how to report crypto trades, sales, and payments on your tax return.

Calculate Crypto Tax
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Loan Calculator

Understand the tax impact of different loan types including personal, auto, and student loans. Estimate how interest paid could affect your taxes.

Calculate Loan
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Capital Gains Tax Calculator

Estimate taxes on your investment gains from stocks, bonds, or other assets. Learn how holding periods and income affect capital gains taxes.

Calculate Capital Gains
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Milage Reimbursement Calculator

Estimate your deductible mileage for business, medical, or moving purposes. Use IRS mileage rates to calculate potential tax savings.

Calculate Milage Reimbursement

Learn More on the TaxAct Blog

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How to Calculate and Make Estimated Tax Payments

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How to Calculate the Self-Employment Tax

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How to Calculate Cost Basis: Common FAQs and Examples

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Still have questions?

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Contact us at any step during your return and as often as you like for guidance. Your questions will be answered quickly and accurately.

Start with Xpert Assist

More ways to boost your tax filing confidence.

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Audit Protection

Add Audit Defense for support in case you get audited. Plus, you’ll have a representative to handle communications with the IRS. 

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$100k Accuracy Guarantee

We’re so confident our calculations are 100% accurate that we back them up with the highest guarantee in the industry. 

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Concierge Support

Get help tracking your e-file status and notified of important changes plus support to help fix a rejected return.