Sales Tax Calculator 2026 (USA)

It multiplies your purchase amount by a sales tax rate you enter or select to estimate the tax owed and total price. It performs a straightforward percentage calculation and doesn't model product-specific exemptions.

Alaska, Delaware, Montana, New Hampshire, and Oregon have no statewide sales tax, though some Alaska localities still charge local sales tax. Everywhere else, state and local rates typically combine into one effective rate.

Often, yes — many states exempt some or all of these categories, but the rules vary significantly by state and this calculator doesn't apply product-specific exemptions automatically. Adjust the taxable amount manually if part of your purchase is exempt.

Following the Supreme Court's South Dakota v. Wayfair decision, online sellers generally must collect sales tax based on economic nexus rules in the buyer's state, not just the seller's location. Enter the applicable combined rate for the buyer's jurisdiction.

Yes — enter the full combined rate directly (state plus any county or city sales tax) and the calculator applies it as a single percentage to your purchase amount.