How to Calculate Sales Tax in the US: All 50 States (2026)

Last updated: June 2026 · 7 min read · US Tax

Unlike India's GST, the US has no single national sales tax. Each state sets its own rate — and many cities and counties add their own on top. This makes US sales tax one of the most confusing systems for newcomers, immigrants, and online shoppers. This guide breaks it all down simply.

How US Sales Tax Works

Sales tax in the US is a consumption tax added at the point of sale. Unlike GST which is included in the displayed price in many countries, US prices are almost always shown before tax. The tax is added at checkout.

There is no federal sales tax. Instead:

The Sales Tax Formula

Sales Tax Amount = Purchase Price × (Tax Rate ÷ 100) Total Price = Purchase Price + Sales Tax Amount Example: $100 purchase in California (combined rate ~10.25%) Sales Tax = $100 × 0.1025 = $10.25 Total = $110.25
👉 Calculate sales tax for any US state instantly: Free Sales Tax Calculator

Sales Tax Rates by State (2026) — Highest and Lowest

StateState RateAvg. Combined Rate (with local)
Tennessee7.0%~9.55%
Louisiana4.45%~9.52%
Arkansas6.5%~9.44%
Washington6.5%~9.38%
Alabama4.0%~9.24%
California7.25%~8.82%
Texas6.25%~8.19%
New York4.0%~8.52%
Florida6.0%~7.02%
Oregon0%0%
Montana0%0%
New Hampshire0%0%

What is Taxed? What is Exempt?

Every state has different exemptions. Common patterns:

Item TypeGenerally Taxed?
Clothing (general)Yes in most states; exempt in NY, PA, MN
Groceries (unprepared food)Exempt in ~30 states; taxed at reduced rate in others
Restaurant foodTaxed in virtually all states
Prescription drugsExempt in most states
Digital downloads (apps, software)Increasingly taxed; varies widely by state
ElectronicsTaxed in most states
CarsTaxed in all states (rate varies, often lower)

Online Shopping and Sales Tax

Since the 2018 South Dakota v. Wayfair Supreme Court ruling, online retailers are required to collect sales tax in states where they have "economic nexus" — typically $100,000 in sales or 200 transactions per year. This means almost all major online purchases (Amazon, Walmart, etc.) now include sales tax based on your delivery address.

For Indian-Americans: If you are shopping online and shipping to family in India, no US sales tax applies to exported goods. But you may owe import duties on the Indian side depending on the value of goods.

Sales Tax for Small Business Owners

If you run an e-commerce business or freelance service, understanding sales tax nexus is critical. You must collect and remit sales tax in every state where you have nexus (physical presence or economic threshold). Failure to comply can result in large back-tax bills plus penalties. Most small businesses use software like TaxJar or Avalara to automate this.

Frequently Asked Questions

Is there sales tax on services in the US?

It depends on the state and the type of service. Most states tax tangible goods. Services are taxed in some states (like Hawaii and New Mexico) but exempt in others. Professional services like legal and medical are generally exempt everywhere.

Can I get a sales tax refund as a tourist visiting the US?

Unlike VAT refund schemes in Europe, the US does not have a general tourist sales tax refund program. Louisiana is the only state with a limited refund program for international visitors. For most US states, sales tax paid by tourists is non-refundable.

Do I pay sales tax when buying a car from a private seller?

Yes. When you register a privately purchased vehicle, you pay a "use tax" equal to the sales tax rate, calculated on the purchase price or the car's market value (whichever the state uses). This is handled at the DMV during title transfer.

Calculate exact sales tax for any state: Free US Sales Tax Calculator →