Sales tax is a percentage added to the price of goods and services at the point of sale
When you buy something at a store or online, the cashier or checkout screen adds a tax to your total. That tax goes to your state or local government, not to the business selling you the item. The percentage varies by location — it depends on which state you live in, and sometimes which city or county within that state. You pay it on most physical items, though groceries, medicine, and clothing are often exempt depending on where you live.
Sales tax is collected by the seller and sent to the government on a regular schedule, usually monthly or quarterly. The seller is responsible for calculating the correct rate for your location and remitting the money. If you buy something online from a seller in a different state, the rules about whether you owe sales tax have changed in recent years — most large online retailers now collect it, but the specifics depend on where the seller is located and where you live.
Key Takeaways
- Sales tax is added at checkout and varies by state and sometimes by city or county within your state.
- The seller collects the tax from you and sends it to the government; you do not send it yourself.
- Most states exempt groceries, prescription medicine, and sometimes clothing, though the rules differ by location.
- Online purchases are now subject to sales tax in most cases, even when buying from out-of-state sellers.
- The tax rate you pay depends on your location at the time of purchase, not where the seller is located.
How sales tax rates are set and where the money goes
Each state sets its own sales tax rate, ranging from zero percent in states like Alaska, Delaware, Montana, New Hampshire, and Oregon, to rates above seven percent in states like California, Tennessee, and Louisiana. Within a state, cities and counties can add their own local sales tax on top of the state rate, which is why the total you pay can vary significantly depending on exactly where you are shopping.
The money collected goes into state and local government budgets. States use sales tax revenue to fund schools, roads, public safety, and other services. Local governments use their portion for city or county services like libraries, parks, and local infrastructure. Unlike income tax, which is tied to your earnings, sales tax is a consumption tax — you pay it based on what you buy, not what you earn.
What items are taxed and what items are exempt
Most physical goods are subject to sales tax, including clothing, electronics, furniture, and household items. However, many states exempt certain categories to reduce the tax burden on essential purchases. Groceries and food bought for home consumption are exempt in most states, though prepared food and restaurant meals are usually taxed. Prescription medications are exempt in all states, and over-the-counter medicines are exempt in most states.
Clothing is taxed in most states, but a few states exempt it entirely or exempt items below a certain price. Services are handled differently by each state — haircuts, repairs, and professional services may or may not be taxed depending on where you live. Digital products like e-books, software, and streaming subscriptions fall into a gray area; some states tax them and others do not. If you need to know whether a specific item is taxed in your state, your state's revenue or tax department website lists the rules.
How sales tax is calculated at checkout
The seller multiplies the price of taxable items by the sales tax rate for your location. If you buy a $100 item in a place with an eight percent sales tax, the tax added is $8, and your total is $108. If you buy multiple items, the tax is calculated on the total of all taxable items. Items that are exempt — like groceries in most states — are not included in the taxable subtotal.
The math is straightforward, but the rate you pay depends on the exact address where the transaction happens. For in-store purchases, that is the store's location. For online purchases, it is typically your delivery address. Some online retailers round the tax to the nearest cent, which can result in slightly different totals depending on the number of items you buy and how the rounding works out.
Sales tax on online and out-of-state purchases
Until recently, many online retailers did not collect sales tax on purchases shipped to states where the seller had no physical presence. That changed after a 2018 Supreme Court decision, and now most large online retailers collect sales tax based on your shipping address. Small sellers with very low sales volumes may still not collect it, but Amazon, Walmart, Target, and most major retailers do.
When you buy from a small seller or marketplace that does not collect sales tax, you may technically owe "use tax" to your state — a tax on purchases you made out of state. In practice, most individuals do not report or pay use tax, and states have limited ability to enforce it. However, the trend is toward more retailers collecting sales tax at checkout, which means you will see it added to your bill regardless of where the seller is located.
The difference between sales tax and other taxes you might see
Sales tax is different from income tax, which is based on your earnings and is usually withheld from your paycheck. It is also different from property tax, which you pay on real estate you own. Some states and cities also charge excise taxes on specific items like gasoline, alcohol, and cigarettes — these are in addition to sales tax and are usually built into the price you see on the pump or shelf.
When you see a total at checkout, the sales tax is the only tax added at that moment. Income tax and property tax are handled separately through other payment systems. Understanding which tax is which helps you see where your money goes and why different purchases result in different total costs.
Frequently Asked Questions
Do I have to pay sales tax on everything I buy?
No. Most states exempt groceries, prescription medications, and some other essentials. Clothing is exempt in a few states. The items that are taxed depend on your state and sometimes your city. Check your state revenue department's website for a complete list of what is and is not taxed where you live.
Why do I pay different sales tax rates in different cities?
States allow cities and counties to add their own local sales tax on top of the state rate. A state might have a six percent rate, but your city might add an additional one or two percent for local services. The total rate you pay depends on your exact location at checkout.
If I buy something online from another state, do I owe sales tax?
Most large online retailers now collect sales tax based on your shipping address, so you will see it added at checkout. Smaller sellers may not collect it. If you buy from a seller that does not collect sales tax, you may owe use tax to your state, though enforcement is rare for individual purchases.
Is sales tax included in the price shown on the shelf?
No. The price on the shelf or in the online listing is before tax. Sales tax is added at checkout. This is why your receipt total is higher than the advertised price.
Can I get a refund of sales tax I already paid?
Generally, no. Sales tax is final once you complete the purchase. If you return an item and get a refund, the sales tax is refunded as part of that refund. Some states offer sales tax refunds to tourists or certain visitors, but these are rare and have specific requirements.