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Tax

Calculator for Sales Tax in US States

Quickly calculate your total purchase amount, including state taxes.

Estimate your sale cost including tax

Enter purchase details and view your final cost with local taxes.

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What this calculator does

State sales tax is a consumption tax imposed on the sale of goods and services within a state. Rates vary significantly by state, ranging from 0% to 10%, with most states in the 5-8% range. Unlike federal income tax, sales tax is collected at the point of purchase and remitted to state governments. Five states (Alaska, Delaware, Montana, New Hampshire, and Oregon) have no state sales tax. However, many of these no-sales-tax states impose other consumption taxes. Sales tax funds state services including education, infrastructure, and public safety. Understanding sales tax is important for budgeting actual costs of purchases and for businesses that need to collect and remit taxes.

How it works

To calculate sales tax, multiply the purchase price by the applicable state sales tax rate. For example, a $100 item in a state with 8% sales tax would have $8 in tax added, totaling $108. The calculation is: Purchase Price × Sales Tax Rate = Sales Tax Amount. Then add the tax to the original price for the total cost. Some states and localities add additional city or county taxes on top of state rates, so the effective tax rate can exceed the state rate. Food, medicine, and some other items are often exempt from sales tax in many states, reducing the overall tax burden on essential purchases.

Formula

Sales Tax = Purchase Price × (State Tax Rate + Local Tax Rate %). Total Cost = Purchase Price + Sales Tax. For multiple items: Sum all items' tax separately, then add to total purchase price.

Tips for using this calculator

  • Check your state's tax rate and any applicable local taxes that may increase the total rate
  • Some states exempt groceries, prescription medications, or medical devices from sales tax
  • Online purchases are increasingly subject to sales tax in most states, even from out-of-state retailers
  • Keep receipts to verify tax accuracy and for expense tracking or returns
  • Use sales tax calculators when planning major purchases to understand the true out-of-pocket cost

Frequently asked questions

Why do some states have no sales tax?

Five states (Alaska, Delaware, Montana, New Hampshire, and Oregon) have no state sales tax for political and historical reasons. However, these states often make up lost revenue through other means like higher income taxes, property taxes, or excise taxes on specific items like cigarettes and alcohol.

Do I have to pay sales tax on online purchases?

Most online purchases are now subject to sales tax. The U.S. Supreme Court ruled in 2018 that states can require online retailers to collect sales tax. However, rules vary by state regarding what triggers tax collection, so some small retailers may be exempt.

Is sales tax included in advertised prices?

In the United States, advertised prices typically do not include sales tax, unlike many other countries. The tax is added at checkout. This means the final price you pay will be higher than the displayed price. Only the final receipt shows the complete breakdown.

Can businesses claim credits or exemptions on sales tax?

Yes, many states allow businesses to claim exemptions for resale certificates, allowing them to purchase inventory tax-free for resale. Additionally, some products and services are inherently exempt (like groceries in many states). Businesses must register with their state to collect and remit sales tax properly.