Unlike income tax, sales tax in the U.S. isn’t standardized at all — it’s set at the state level, and in many cases, cities and counties add their own local rates on top. That means the exact same purchase can cost noticeably different amounts depending on where you’re standing when you buy it, and a handful of states charge no sales tax at all.
This becomes particularly relevant for big-ticket purchases like electronics, furniture, or vehicles, where even a percentage point or two in sales tax adds up to real money. Online shoppers run into this too, since many retailers now charge sales tax based on the buyer’s shipping address rather than the seller’s location, following changes in how states enforce online sales tax collection.
Before a big purchase, check what you’ll actually owe with our free sales tax calculator, which accounts for state-specific rates. If you’re importing goods from outside the U.S. instead, sales tax is just one piece of the puzzle — our import duty calculator covers the additional costs that come with international purchases.