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

When you buy something in a store or online, the seller adds a tax to your bill. That tax goes to your state or local government. The percentage varies by location — it might be 5% in one state and 8.5% in another. Some states have no sales tax at all. The amount you pay depends on where you live, what you're buying, and sometimes what the item is used for.

The seller collects the tax from you and sends it to the government on a regular schedule, usually monthly or quarterly. You don't send it yourself — it's built into the price you see at checkout. The tax applies to most physical goods, though some items like groceries or prescription medications are often exempt depending on your state's rules.

Key Takeaways

  • Sales tax is added at checkout and varies by state, county, and sometimes city — ranging from 0% to over 10%.
  • Most physical goods are taxed, but groceries, prescription drugs, and medical equipment are often exempt.
  • The seller collects and sends the tax to the government; you don't file it yourself.
  • Online purchases are increasingly subject to sales tax, even when shipped from out of state.
  • Some states tax services like haircuts or repairs, while others do not.

How the sales tax rate is set

Your state legislature sets a base sales tax rate, usually between 4% and 7%. On top of that, your county or city can add its own local tax, sometimes another 1% to 3%. This means the total rate at checkout is the state rate plus the local rate combined. A state with a 6% base rate and a county that adds 2% means you pay 8% total in that county.

The rate can change if your state or locality votes to raise or lower it, but this happens infrequently — usually once every few years at most. When a rate does change, the seller updates their register or point-of-sale system. You'll see the new rate on your receipt the day it takes effect.

What items are taxed and what are exempt

Most states exempt groceries — food you cook at home — from sales tax, though prepared food and restaurant meals are taxed. Prescription medications are exempt in all states. Medical devices like wheelchairs, hearing aids, and diabetic supplies are often exempt or taxed at a lower rate, depending on the state.

Clothing is taxed in most states, though a few states exempt it entirely or only during certain periods. Services vary widely: haircuts, car repairs, and plumbing are taxed in some states but not others. Digital goods like e-books, software, and streaming subscriptions are taxed in most states now, though the rules are still evolving. Your state's revenue department publishes a list of what is and isn't taxed in your location.

Sales tax on online and out-of-state purchases

For many years, online retailers only collected sales tax if they had a physical location in your state. That changed in 2018 when the U.S. Supreme Court ruled that states could require online sellers to collect tax even without a store nearby. Now most large online retailers — Amazon, Walmart, Target — collect and send sales tax based on your shipping address.

Smaller sellers and marketplaces may not collect tax yet, depending on their size and your state's rules. If tax wasn't collected at checkout, you may owe it when you file your state income tax return, though most people don't report it. Check your state's revenue department website to see which online sellers are required to collect in your state.

The difference between sales tax and other taxes

Sales tax is separate from income tax. Income tax is based on what you earn; sales tax is based on what you spend. They go to different government accounts and are calculated differently. You pay income tax once a year (or through paycheck withholding), while you pay sales tax every time you make a purchase.

Some states have no income tax but use sales tax as their main revenue source. Others have both. A few states have neither income tax nor sales tax and rely on other sources like corporate taxes or natural resource fees. The combination of taxes you pay depends entirely on which state you live in.

How to find your local sales tax rate

Your state's Department of Revenue or similar agency publishes the current sales tax rate for every county and city. You can search online for "[your state] sales tax rate" and find an official table. The rate shown is the combined state and local rate — the number you'll actually pay at checkout.

If you're buying something online, the retailer's website usually shows the tax amount before you complete the purchase. If you're shopping in person, the receipt shows the tax separately from the subtotal. Some stores display the tax-included price on the shelf tag, while others show only the pre-tax price. Check your receipt to see the exact breakdown.

Why sales tax matters for your budget

Sales tax increases the final cost of everything you buy. A $100 item in a place with 8% sales tax actually costs $108. Over time, this adds up — a household that spends $30,000 a year on taxable goods pays $2,400 in sales tax if the rate is 8%. Understanding your local rate helps you budget accurately and know what you'll actually pay at checkout.

Sales tax also affects major purchases differently. Buying a car, furniture, or appliances in a high-tax area costs noticeably more than in a low-tax area. Some people who live near state borders shop across the line to save on tax, though this is only practical for large purchases. Knowing your rate and what's exempt helps you make informed spending decisions.

Frequently Asked Questions

Do I have to pay sales tax on everything I buy?

No. Groceries, prescription medications, and medical equipment are exempt in most states. Some states also exempt clothing, utilities, or services. The exemptions vary by state, so check your state's revenue department for a complete list of what's taxed where you live.

Why is the price on the shelf different from what I pay at checkout?

The shelf price is usually the pre-tax price. Sales tax is added at checkout, so your final bill is higher. Some stores display the tax-included price, but most show only the pre-tax amount. The receipt breaks down the subtotal and tax separately so you can see both.

Do I owe sales tax on things I buy out of state and bring home?

Technically, yes — most states require you to pay "use tax" on out-of-state purchases, which is the same rate as sales tax. In practice, this is rarely enforced for individual shoppers. It mainly applies to businesses. Check your state's rules if you're making large purchases across state lines.

Can sales tax rates change during the year?

Rates can change, but it's uncommon. When a change does happen, it usually takes effect on a specific date set by the state or local government. Your state's revenue department announces rate changes in advance, and retailers update their systems before the new rate goes into effect.

Is sales tax the same everywhere in my state?

No. The state sets a base rate, but counties and cities can add local tax on top. This means the rate varies by location within the state. A purchase in one county might be taxed at 7%, while the same purchase in a neighboring county is taxed at 8.5%. Always check the rate for your specific location.