How to Use the Car Sales Tax & Registration Calculator
Buying a new car in the U.S. costs more than the sticker price โ every state adds sales tax, and the DMV charges separate title and registration fees before you can drive off legally. This calculator lets you enter the vehicle price and pick a representative state rate to estimate the total you'll owe on top of the purchase price.
Unlike a single national tax, U.S. car sales tax is set state by state (and sometimes county or city too), ranging from 0% in states like Oregon and Montana to over 7% in states like California. DMV registration and title fees are also state-specific and can be a flat amount or scaled to vehicle value or weight, so treat the DMV fee field as an editable estimate.
If you're trading in a vehicle, many states only tax the price difference, which can meaningfully lower your bill โ check your state's DMV or Department of Revenue site for the exact rate and rules that apply to your purchase.
Frequently Asked Questions
Most states charge sales tax as a percentage of the purchase price. Rates vary widely โ from 0% in a few states to over 7% in others โ so the same car can cost hundreds or thousands more depending on where it's registered.
No. Registration and title fees are set independently by each state DMV and can range from around $50 to several hundred dollars depending on vehicle value, weight, or a flat state fee. This calculator uses a representative estimate.
In many states, yes โ sales tax is charged only on the price difference between the new car and your trade-in value. A few states tax the full purchase price regardless of trade-in, so check your state's specific rule.