US Tax-Free & Sales Tax Calculator

US sales tax calculator: pick a state and amount to estimate the state-level sales tax; the five tax-free states (AK/DE/MT/NH/OR) show $0 automatically.

About this tool

US purchases add sales tax, but rates vary by state — and five states (Alaska, Delaware, Montana, New Hampshire, Oregon) are tax-free. When pricing, estimating cross-border costs, or simply wondering how much a state charges, doing it by hand is error-prone.

This calculator lets you pick a state and enter an amount to estimate the state-level sales tax. The five tax-free states automatically show $0. It's the fastest, least error-prone way to compare prices across states or fill in test data.

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