Sales tax is a percentage added to the price of goods and services at the point of purchase

When you buy something in a store or online, the cashier or checkout screen adds a tax to your total. That tax goes to your state or local government. The percentage varies by where you live — some states charge no sales tax at all, while others charge between 4 and 10 percent. A few cities and counties add their own local tax on top of the state rate, which is why the same item costs different amounts in different places.

Sales tax is collected by the business selling the item, not by you directly. The store or website holds onto that money and sends it to the government on a regular schedule — usually monthly or quarterly. You do not file paperwork or send anything yourself; the tax is straightforward included in what you pay at checkout.

Key Takeaways

  • Sales tax is added at checkout and varies by state, ranging from zero percent in some states to over 10 percent when local taxes are included.
  • The business collecting the tax sends it to the government, not the customer — you pay it as part of your total bill.
  • Most physical goods are taxed, but groceries, prescription medications, and some services are often exempt depending on your state.
  • Online purchases are now taxed in most states, even when the seller is located elsewhere, though rules vary by state and seller size.
  • Sales tax is a consumption tax, meaning you only pay it when you buy something, unlike income tax which is based on what you earn.

Which states have no sales tax

Five states do not charge a statewide sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, this does not mean shopping there is always tax-free. Alaska allows cities and boroughs to charge local sales tax, so some areas still collect it. The other four states have no local sales tax option, making them the only places where most purchases are completely untaxed.

If you live in one of these states, you still may owe tax on other things. New Hampshire taxes meals at restaurants and hotel stays. Alaska taxes alcohol and tobacco at higher rates. These exceptions exist because states need revenue and often target specific categories rather than all purchases.

What items are usually exempt from sales tax

Most states do not tax groceries — items like milk, bread, vegetables, and meat bought for home cooking. Prescription medications are also exempt in nearly every state. Some states exempt medical devices like hearing aids or diabetic supplies. The rules differ by state, so an item that is tax-free in one place may be taxed in another.

Clothing is taxed in most states, but several states exempt it or tax it at a lower rate. Services like haircuts, repairs, and professional fees are often not taxed, though this varies widely. Restaurant meals are almost always taxed, even though the food itself might be exempt if you bought it at a grocery store. The difference is that restaurants are selling a service (preparation and serving) along with the food.

If you are unsure whether something is taxed in your state, your state's tax department website lists the rules. The names vary — it might be called the Department of Revenue, Tax Commission, or Comptroller's Office — but each state publishes what is and is not taxed.

How sales tax is calculated and what you actually pay

Sales tax is calculated as a percentage of the price before tax. If an item costs $100 and your sales tax rate is 8 percent, you pay $8 in tax for a total of $108. The math is straightforward, but the rate you pay depends on where the purchase happens, not where you live. If you buy something while traveling, you pay that location's tax rate.

Online purchases work the same way now in most states. For many years, online sellers only collected sales tax if they had a physical location in your state. That changed in 2018 when the Supreme Court ruled that states could require online sellers to collect tax even without a store there. Most large online retailers now collect sales tax based on your shipping address. Smaller sellers may not, depending on state rules, but the trend is toward collecting it everywhere.

The total you see at checkout is what you pay — there is no separate bill or form. The business keeps track of all the tax it collects and sends it to the government in bulk, usually monthly or quarterly depending on how much they collect.

The difference between sales tax and income tax

Sales tax and income tax are two separate taxes that fund different things. Income tax is based on what you earn — your salary, wages, or business income. Sales tax is based on what you spend. You pay income tax once a year (or have it withheld from paychecks), while you pay sales tax every time you buy something.

Not all states have both. Seven states have no income tax but do have sales tax. Three states have income tax but no sales tax. Most states have both. The combination affects how much total tax you pay on your earnings and spending, which is why people sometimes move to lower-tax states.

Sales tax on services and digital goods

Services are taxed inconsistently across states. Some states tax all services, some tax none, and most tax only certain ones. Haircuts, plumbing repairs, and legal information are often taxed, but the rules differ. Digital goods like e-books, streaming subscriptions, and software downloads are increasingly taxed, though some states still exempt them or tax them differently than physical goods.

If you run a small business or sell items online, understanding which services and goods are taxed in your state matters for pricing and record-keeping. Most states have detailed guides on their tax websites listing what falls into each category.

How to find your sales tax rate

Your sales tax rate depends on your state and sometimes your city or county. To find your exact rate, go to your state's tax department website — search "[your state] sales tax rate" to find the official page. Most states show the statewide rate and let you enter your zip code to see local additions.

If you are shopping online, the retailer's website usually shows the tax amount before you complete your purchase. You can see the breakdown: item price, tax, and total. This lets you know exactly what you will pay before you commit to buying.

Frequently Asked Questions

Do I pay sales tax on used items?

Sales tax on used goods depends on your state and where you buy them. Used items sold by individuals are usually not taxed. Used items sold by businesses or resellers may be taxed, though some states exempt them. Check your state's rules if you are buying from a used goods store or online reseller.

Can I get sales tax back if I return something?

Yes. When you return an item, the store refunds both the price and the tax you paid. The refund appears as a credit to your original payment method. The store then adjusts the tax it sends to the government to account for the return.

Why do some online sellers not charge sales tax?

Smaller online sellers may not be required to collect sales tax in all states, depending on their sales volume and location. Large retailers like Amazon and Walmart now collect it in most places. If you notice a seller is not charging tax, they may be below the threshold their state sets, or they may be breaking the law — but that is not your responsibility to enforce.

Is sales tax the same everywhere in my state?

No. Most states have a base sales tax rate, but cities and counties can add their own local tax on top. Your total rate depends on your zip code. Two towns 10 miles apart might have different rates if one has a local tax and the other does not.

Do I need to report sales tax I paid when I file taxes?

Most people do not. Your employer withholds income tax from your paycheck, and you report that on your tax return. Sales tax is separate and is already paid at checkout — you do not report it again. The only exception is if you own a business and are claiming a deduction for business purchases, in which case you may need records of what you paid.