The price on the shelf is not the price you pay, and how much extra you hand over depends heavily on which state you are standing in. Combined state and local sales tax ranges from under 2 percent in the cheapest states to more than 10 percent in the priciest, according to the Tax Foundation. On a cup of coffee, nobody notices. On a laptop, a couch, or an appliance, it is real money.
Sales tax feels like a fixed fact of shopping, but it is one of the most variable costs in American life, and a little awareness of it can save you a surprising amount on the big stuff.
Which states have the highest sales tax?
By average combined rate, Louisiana tops the list at about 10.12 percent, followed by Tennessee, Arkansas, Washington, and Alabama, all in the mid nine percent range. At the other end, Alaska averages just 1.82 percent, Hawaii sits around 4.5 percent, and five states levy no statewide sales tax at all.
The chart shows the spread. Put a $1,000 purchase against those rates and the tax alone ranges from about $18 in Alaska to roughly $101 in Louisiana, a difference of more than $80 on a single item.
Tax Foundation, 2025 average combined state and local rates.
- Louisiana: 10.12%
- Tennessee: 9.56%
- Washington: 9.43%
- Hawaii: 4.5%
- Alaska: 1.82%
How much does sales tax actually add?
Multiply the pre-tax price by the rate. At 10 percent, a $1,000 purchase carries $100 in tax; at 2 percent, it is $20. The percentage sounds small either way, but the dollar amount scales with the price, which is why the rate barely matters on small items and matters a lot on expensive ones. The sales tax calculator does the exact math for your local rate and any price.
It also stacks with other decisions. If you are already comparing a discounted price, run the discount first, then the tax on the reduced amount, to see what you will really pay at the register.
Ways to keep sales tax from stinging
You cannot vote yourself a lower rate at checkout, but a few things help:
- Know your exact local rate, since county and city taxes stack on top of the state rate.
- Watch for sales tax holidays, which many states run before the school year on clothing and supplies.
- For big-ticket items, remember the tax is part of the true price when you compare options.
- Do not assume groceries and prescriptions are taxed the same as everything else. Many states exempt them.
The bottom line
Combined sales tax runs from about 1.8 percent in Alaska to over 10 percent in Louisiana, so the same purchase can cost noticeably more depending on where you buy it. The rate is invisible on small items and expensive on big ones, because the dollar cost scales with the price. Know your local rate, factor it into big purchases, and use the sales tax calculator so the number at the register is never a surprise.