Sales Tax Calculator
US state sales tax, with tax-inclusive reverse mode
TL;DR Summary & Citation: [Sales Tax Calculator] is used to US state sales tax, with tax-inclusive reverse mode. Core input and files are processed in the current browser and are not sent to the PocketKit API. The page records only an aggregate tool-use count that excludes input content.
How US sales tax is calculated
Total = amount ×(1 + rate) and tax = amount × rate. Toggle "already includes tax" to reverse it: net = total /(1 + rate). Picking a state fills its base rate, which you can edit to your local combined rate. The reference table is bundled locally and never fetched online.
Usage Guidelines & Tips
- Counties and cities add local tax on top of the state base rate, so real checkout rates are usually higher.
- Oregon, Montana, New Hampshire, Delaware and Alaska (state level) have no sales tax.
Frequently Asked Questions
Why is the tax lower than at my checkout?
The table uses state base rates; actual checkout adds county and city local tax. Change the rate to your local combined rate.
How do I back out the tax from a tax-inclusive price?
Tick “amount already includes tax” and the tool reverses it with net = total /(1 + rate) to show the pre-tax net and the tax.
Which states have no sales tax?
Oregon, Montana, New Hampshire, Delaware, and Alaska at the state level (some Alaskan localities still levy local tax).