Tax Guides
Plain-language guides on federal tax brackets, taxable income, recent tax years, and state income tax—written to help you use the My Taxes calculator with confidence.
Start with any topic below. Each guide links back to the calculator so you can apply what you learn to your own filing status, taxable income, and state.
How Federal Tax Brackets Work
Learn how U.S. progressive federal income tax brackets work, and the difference between marginal and effective tax rates.
How to Find Your Taxable Income on Form 1040
Find the taxable income figure to enter in the My Taxes calculator using Form 1040 and common estimates when you do not have a return handy.
Federal Income Tax Brackets for 2024 and 2025
Overview of how IRS federal income tax brackets work for tax years 2024 and 2025, and how to compare them in the My Taxes calculator.
State Income Tax Overview: Flat, Graduated, and No-Tax States
Understand how state income taxes differ across the U.S.—flat rates, graduated brackets, and states with no wage income tax—and how My Taxes estimates them.
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My Taxes provides educational estimates from published U.S. federal and state income tax tables. It is not tax advice. See our Disclaimer for details.