1. Pick a state
Each state ships with its 2026 statewide base rate. California, Utah, and Virginia include mandatory statewide local add-ons in that base, matching Tax Foundation’s presentation.
Sales tax calculator · January 1, 2026
US sales tax by state, added in one step.
Enter an amount and a state. StateTaxAdd estimates sales tax and the total from a static statewide base rate. Optionally include a typical local combined rate, or type your own local add-on. Reverse the math when you only have a tax-included total.
Sales tax calculator
How the calculator works
2. Choose a rate basis
Default is state-only. Check typical local to use the population-weighted combined average, or enter a custom local percent from a city rate sheet.
3. Add tax or reverse it
Add tax: tax = amount × rate. Find pre-tax: amount = total ÷ (1 + rate). Rounding is to the nearest cent. No paid tax API is called.
Sales tax by state, in brief
Forty-five states levy a statewide sales tax. Alaska has local-only sales taxes. Delaware, Montana, New Hampshire, and Oregon have no general sales tax in this table. Combined rates are often much higher than the state base wherever cities and counties stack locals.
This site is a guide, not a filing engine. Product exemptions, grocery treatment, origin versus destination sourcing, and district taxes are why two receipts in the same state can disagree.
Open the full 2025/2026 rates tableor read theorigin vs destination explainer.
Quick FAQ
How do I calculate sales tax by state?
Multiply the pre-tax amount by the statewide rate, then optionally add a typical or custom local rate. StateTaxAdd does that math and can also reverse a tax-included total back to pre-tax.
Are these 2026 sales tax rates exact for my city?
No. The calculator uses static statewide base rates and population-weighted average local rates as of January 1, 2026. Your ZIP, product type, and exemptions can change the result.
Can I find the pre-tax amount from a total?
Yes. Switch to Find pre-tax. Pre-tax = total ÷ (1 + rate). This is useful when a receipt only shows the tax-included price.