Sales Tax Calculator (US)

This calculator estimates US sales tax, final price, or pre-tax price using the amount and tax rate you enter. It is useful for checking receipts, pricing purchases, and comparing costs across locations.

Sales tax is usually set by state and local rules, which means the rate can vary by city, county, product type, and whether the item is taxable or exempt. Online purchases can also involve marketplace and destination-based tax rules.

Use this for planning and comparison only. Actual tax can vary based on local rules, exemptions, holidays, product categories, and business registration requirements.

If an item costs $100 before tax and the sales tax rate is 8%, the tax is $8 and the final price is $108.

If you already know the final price and want to work backwards, divide the final price by 1 plus the tax rate. For example, a $108 final price at 8% tax gives a pre-tax price of $100.

This reverse calculation is useful when a receipt shows the final total but you want to understand the base price, tax portion, or how much a discount really saved before tax.

US sales tax is not a single national rate. A state may set one rate, then counties, cities, or special districts may add additional local rates. Some products may be exempt, taxed at a reduced rate, or treated differently depending on the state.

That is why two shoppers can buy the same item at the same shelf price and pay different final totals in different locations. For accurate purchasing decisions, use the local combined rate that applies to the transaction.

A common mistake is applying sales tax before a discount when the retailer actually taxes the discounted price, or assuming all products are taxed at the same rate. Food, clothing, digital goods, and services can be treated differently across states.

For businesses, sales tax is more complex than a single percentage. Nexus, exemptions, resale certificates, filing deadlines, marketplace facilitator rules, and product taxability can all matter. This calculator is for quick arithmetic, not compliance advice.

Use this calculator to add US sales tax to a pre-tax price or remove sales tax from a tax-inclusive price.

The component uses the price and sales tax rate you enter. It does not look up state, county, city, product, holiday, marketplace, or exemption rules.

Use vat for VAT-style add/remove calculations, and use this page when the search intent is US sales tax.

Use state tax for income-tax comparisons across states; sales tax here is purchase-price arithmetic.

Label saved scenarios with the jurisdiction and rate you used because the calculator cannot verify whether the rate is current or complete.

Applying only a state rate when county, city, district, or local surtax also applies.

Assuming every product uses the same rate. Groceries, clothing, digital goods, services, and prepared food can be treated differently.

Using this calculator to decide nexus, use tax, resale exemption, marketplace facilitator, or filing obligations.

Confusing sales tax with income tax. This page is about purchase price, tax amount, and final price.

Expecting the calculator to know whether a price is tax-inclusive. Choose add or remove mode based on the price you have.

Example: enter a $100 price, choose add sales tax, and use a 7.25% sales tax rate.

The calculator shows the pre-tax price, sales tax amount, and final price after tax.

Switch to remove sales tax when the price already includes tax and you want the pre-tax amount.

Change the rate when comparing cities or receipts, but keep notes on where the rate came from.

Use vat for VAT inclusive/exclusive calculations rather than US sales tax wording.

Use state tax and property tax when comparing the broader tax cost of living across states.

Use profit margin or markup for business pricing math before adding sales tax to the final customer price.

Keep seller remittance, exemption certificates, and filing calendars outside this simple add/remove calculator.

Check the correct combined local rate for the purchase location.

Check whether the item or service is taxable at that rate.

Check whether the price you entered is pre-tax or already tax-inclusive before choosing the mode.

Rerun this sales tax calculator when price, rate, location, product category, or add/remove mode changes.

Recheck before quoting prices if the buyer location changes or local add-on rates apply.

If the result differs from a receipt, trace pre-tax price, combined rate, taxable items, discounts, and fees separately.