How is federal income tax calculated?

Federal income tax uses progressive tax brackets. Your income is taxed at increasing rates as it moves through each bracket. For 2025, the brackets range from 10% to 37%.

FICA stands for Federal Insurance Contributions Act. It includes Social Security tax (6.2% up to $176,100) and Medicare tax (1.45% with no limit). An additional 0.9% Medicare surtax applies to income over $200,000.

Which states have no income tax?

Nine states have no state income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming.

Free Paycheck Calculator 2025 – Federal & State Tax

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Disclaimer

This calculator provides estimates for informational purposes only. Results may vary based on individual circumstances. Consult a qualified financial professional or tax advisor for personalized advice. Tax rates and brackets are based on 2025 data and are subject to change.