Depending on the state you live in, you’ll also have to pay a varying Sales Tax. Most states range between 4% and 7%, with the average being approximately 5%. The highest sales tax in 2022 is featured in California, with a State Tax Rate of 7.25%. There are also five states without a sales tax at all - these include Oregon, New Hampshire, Montana, Alaska, and Delaware.   Sales tax is often described as the most difficult tax to calculate and get right on the tax return, as the rate varies depending on many factors. The deadlines also vary from state to state, so it's always best to look for more information in your local regulations - or find professional help with filing your taxes in the United States.