Math
Sales Tax Calculator
Two modes: add tax to a price, or strip tax out of a final total. Pick the mode, enter the numbers.
Enter a price and tax rate.
FAQ
Why doesn't this know my local rate? +
Sales tax is jurisdiction-specific. Even within one state, the rate varies by city, county, and special district. Easiest path: check a recent receipt and type the rate.
Is shipping taxed? +
Depends on state. Many states tax shipping if the items are taxable; some don't. Talk to a CPA for business decisions.