US Sales Tax Calculator

How US Sales Tax Works

Sales tax in the United States is levied at both the state and local level. Unlike VAT used in the UK and EU, US sales tax is only charged at the point of final sale to the consumer — it's a retail tax, not a multi-stage tax. There is no federal sales tax in the U.S., meaning each state government sets its own rate and rules, and local jurisdictions such as cities and counties can layer additional taxes on top.

The result is a patchwork of rates and rules that varies enormously depending on where a transaction takes place. A sale in one zip code can attract a very different combined rate to one just a few miles away.

Sales and Use Tax — What's the Difference?

Sales tax and use tax are closely related but apply in different situations. Sales tax is collected by the vendor at the point of sale on retail sales of tangible personal property and certain goods and services. Use tax, on the other hand, is imposed on the buyer when sales tax wasn't collected at the time of purchase — typically when goods are bought from out-of-state sellers or online retailers who didn't charge tax.

Both sales and use tax rates are set at the state level, with local jurisdictions able to impose additional rates on top. For most taxpayers and businesses, sales and use tax rates combined represent the true cost of compliance across any given jurisdiction.

State Sales Tax Rates (2026)

Below are the statewide sales tax rates for all 50 US states. Note that many cities and counties impose additional local taxes on top of these base rates, so the combined rate you actually pay is often higher.

Local Sales Tax Rates — Cities and Counties

State sales tax rates are only part of the picture. Most states allow cities and counties to impose a local tax rate on top of the statewide sales tax. This means the combined rate — state plus local — is what most consumers and businesses actually pay.

In some states, local tax rates can add 2 percent or more on top of the state base rate. According to the Tax Foundation, when you factor in average local rates, states like Louisiana, Tennessee, and Arkansas consistently rank among the highest for combined state and local sales tax.

The best way to find the exact combined rate for a specific location is to look up your zip code through your state's official tax rate lookup tool, as rates can differ between neighbouring cities and counties within the same state.

Texas Sales Tax

Texas sales tax is worth covering separately given its size and economic significance. The statewide Texas sales tax rate is 6.25%, but cities and counties in Texas can impose an additional local tax rate of up to 2 percent, bringing the maximum combined rate to 8.25% in many areas.

Texas sales tax applies to retail sales of tangible personal property and certain services. The Texas Comptroller's office provides a detailed sales tax rate lookup by address and zip code for businesses that need the precise combined rate for a specific jurisdiction.

City sales tax is common across major Texas cities — Dallas, Houston, Austin, and San Antonio all charge the maximum 2 percent local rate on top of the statewide tax.

Sales Tax Exemptions

Most US states provide a sales tax exemption for certain categories of goods and services. Common exemptions include groceries, prescription medications, and clothing in some states. Businesses purchasing goods for resale or for use in manufacturing may also qualify for exemption from sales tax on those purchases.

Each state defines its own sales tax exemption rules, and what's exempt in one state may be fully taxable in another. Some states offer reduced rates rather than full exemptions for certain goods — for example, applying a lower percent sales tax to food items rather than zero-rating them entirely.

If your business regularly makes exempt purchases, you'll typically need to provide the vendor with a valid exemption certificate at the time of sale. Keeping proper records of these is important — failure to do so can create issues during a tax audit.

Jurisdiction and Nexus — When Sales Tax Applies

Sales tax applies when a business has nexus in a state — meaning a sufficient connection to that state to create a tax obligation. Physical nexus includes having offices, employees, warehouse space, or inventory within a state. Economic nexus, introduced following the 2018 South Dakota v. Wayfair Supreme Court ruling, is triggered when a business exceeds a sales threshold in a state — commonly $100,000 in sales or 200 transactions per year.

Once nexus is established in a jurisdiction, the business must register with that state, collect the appropriate combined rate from customers, and remit it to the state government on a regular basis — usually quarterly, though some states require monthly filing depending on the volume of tax collected.

Failing to register or collect when required can result in a penalty, back taxes, and interest — so understanding where your business has nexus is critical.

Sales Tax for Accountants and Bookkeepers

Managing multi-state sales and use tax compliance is one of the most complex areas of US tax. If you work with clients who sell across state lines — whether through retail, e-commerce, or services — understanding nexus rules, local tax rates, and sales tax exemption requirements across different jurisdictions is essential.

Unlike federal income tax, which has a centralised framework, state and local governments each operate their own systems with their own filing deadlines, rates, and rules. There's no single deduction or computation method that works across all states.

Tools like QuickBooks can automate sales tax calculations and help track obligations across multiple jurisdictions within your accounting workflow. For more AI-powered solutions that streamline tax compliance, explore our full accounting tools directory.

Penalties for Non-Compliance

Businesses that fail to collect, report, or remit sales tax correctly can face significant penalties. Most states charge interest on unpaid tax revenue from the due date, plus a flat penalty that can range from a small percent up to 25% or more of the tax owed depending on the state. Repeated non-compliance can trigger audits and more serious consequences.

The best way to avoid a penalty is to stay on top of your filing obligations, understand which jurisdictions you have nexus in, and use reliable software to compute and remit the correct amounts on time.