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Income Tax Calculator
Estimate your 2026 US federal income tax, effective rate and marginal bracket from your income and filing status.
APY Calculator
Convert an interest rate (APR) to annual percentage yield (APY) for any compounding frequency, or APY back to APR.
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How to use this calculator
Enter your values after choosing the type of calculation in the tabs. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
APY formula
APY = (1 + r ÷ n)ⁿ − 1 (continuous: e^r − 1)
APY includes the effect of compounding, so it’s what you actually earn in a year. 4.5% compounded daily is an APY of about 4.60%. Banks must quote APY on savings accounts under the US Truth in Savings Act, which makes comparison easy.
Frequently asked questions
Is APY higher than APR?
Yes whenever interest compounds more than once a year.
About this tool
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- Last updated
- 31 Oct 2026
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