Marginal Rate Explorer

What does my next $1,000 of income actually cost?

Open the Marginal Rate Explorer tool →

How this works

We run the tax engine twice, at your current income, and again at your income plus the step you choose, then attribute the extra tax to each layer: federal income tax, FICA, and your state. That difference is what your next dollars actually cost you, which is often higher than your bracket alone because several taxes stack.

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Computed entirely on your device for U.S. taxes and benefits. Nothing is ever sent anywhere, and it is free forever. Educational information, not financial, tax, investment, or legal advice.