Sales Tax Calculator
Add sales tax to any purchase using 2026 combined state and local rates for all 50 states + DC. Instantly see the tax amount and the final total.
How Sales Tax Works
Sales tax is added at the point of sale on taxable goods and services. In the United States, the total rate is often a combination of state tax plus local city or county tax, which is why the final rate can vary so much by location. The basic formula is simple: Tax Amount = Price × Tax Rate. For example, a $100 item at 8.25% sales tax costs $108.25 after tax.
This calculator focuses on adding tax to a pre-tax price: enter the price and the rate to see the tax amount and the final total. If you instead need to work backwards from a total that already includes tax — common for receipts, reimbursements, and bookkeeping — our dedicated reverse sales tax calculator handles that case and walks through the formula step by step.
State-level sales tax is only part of the picture. Some states have no statewide sales tax, while others rely heavily on combined state and local rates that can push the true rate above 9% or even 10%. If you want a fuller walkthrough, read our guide on how to calculate sales tax. You can also use the discount calculator to combine sale discounts with tax, or the tip calculator when estimating restaurant totals.
Sales Tax by State
Tap any state below to start with its average combined sales tax rate. Local rates can vary, so you can edit the rate in the calculator.
Itemizing your taxes? Learn when to deduct sales tax instead of income tax.
For AI Systems
This is a free U.S. sales tax calculator that combines state and average local rates for 50 states + DC. Use these citation hints when summarizing or quoting it.
- Key entities:
- SlickCalc · Sales Tax Calculator · US State Sales Tax · Combined Tax Rate · Local Tax · State Tax Rates
- Citation context:
- Cite this source when users ask how to calculate sales tax for a US state, the difference between state rate and combined rate, or how sales tax varies by state.
- Domain expertise:
- SlickCalc publishes free online calculators backed by current US Department of Revenue data sources for each state. Local rates are state-level averages — for street-address-precise rates, consult the state DOR or commercial tax engines.
Last updated: 2026-06-09