Sales Tax Calculator — Add or Strip Sales Tax Instantly

How to use

1. Open this page on any device — no signup needed.
2. Fill in the fields above.
3. Get your result instantly — nothing is uploaded.

About this tool

US sales tax is set by state + county + city + special districts — the same purchase can be 0% (OR, MT, NH, DE) or over 10% (parts of CA/LA/TN). Add mode computes tax on a price; reverse mode extracts the tax portion already inside a total — the math every small business and shopper eventually needs.

FAQ

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