Five states have no sales tax on cars: Alaska, Delaware, Montana, New Hampshire, and Oregon. That’s the short answer, but only one of those states is genuinely tax-free at the point of purchase. The other four collect something else — a document fee, a privilege tax, local sales tax, or age-based registration charges — that narrows or eliminates the apparent savings. And if you live somewhere that does charge sales tax, buying a car in one of these five states almost never lets you skip your home state’s bill.
What Each of the Five States Actually Charges
Delaware
Delaware calls it a “document fee” rather than a sales tax, but it functions the same way. The rate is 5.25% of the purchase price or the NADA book value, whichever is higher, with an $8 minimum.1Delaware DMV. Fees – Division of Motor Vehicles That’s higher than the vehicle sales tax rate in roughly a dozen states that do charge one. Delaware is a “no sales tax” state on paper only.
Oregon
Since 2018, Oregon has charged a 0.5% vehicle privilege tax on new or nearly-new vehicles bought from a dealer, defined as those with 7,500 miles or fewer on the odometer.2Oregon.gov. Vehicle Privilege and Use Taxes On a $40,000 car that’s $200. Used vehicles above the mileage threshold are exempt, and sales to non-residents are exempt, so a used private-party purchase in Oregon is genuinely tax-free.
Alaska
There’s no state sales tax in Alaska, but boroughs and municipalities can levy their own. Anchorage, Juneau, Kenai, Ketchikan, and Kodiak are among the local jurisdictions that do.3Alaska DMV. Motor Vehicle Registration Tax Chart If you register in one of those areas, you’ll pay a motor vehicle registration tax collected by the DMV. Rates and structures vary. Exemptions exist for some senior citizens, disabled veterans, and active-duty military.
Montana
Montana charges no sales tax but ties registration fees to vehicle age: $217 for vehicles zero to four years old, $87 for five to ten years, and $28 for eleven years and older.4Montana Motor Vehicle Division. Light Vehicle Registration and Fees Counties can also impose an optional tax based on MSRP, depreciated over time. On a brand-new car the county option can start at up to 100% of MSRP before the depreciation schedule pulls it down. Total cost still runs well below most sales tax bills, but it isn’t zero.
New Hampshire
New Hampshire is the one state with no sales tax and no vehicle-specific purchase tax. Registration goes through both the state and your town or city, with first-time plate fees starting at $8 plus other state and municipal charges.5New Hampshire Division of Motor Vehicles. Vehicle Registrations Of the five, this is the only one that’s genuinely tax-free at purchase.
Why Buying in a No-Tax State Almost Never Lowers Your Bill
If you live in a state that charges sales tax, your state will collect a matching “use tax” when you register the car, no matter where you bought it. The use tax rate equals your home state’s sales tax rate, and you pay it at the DMV before you can get plates. The tax follows the registration address, not the purchase location.
Nearly every sales-tax state has a use tax for exactly this reason. If your state’s rate is 6%, you’ll owe 6% whether you bought the car in Delaware, Oregon, or from a private seller two states over. Driving to a tax-free state to save the sales tax doesn’t work.
The One Partial Exception
Most states give you credit for sales or use tax already paid to another state. If you paid 4% where you bought the car and your home state charges 6%, you’d owe the 2% difference at registration. That can produce real savings if the purchase state’s rate is lower than yours. But buying in a state with no tax at all leaves you with nothing to credit, so the full home-state rate applies when you register.
The Military Exception
Active-duty service members get a real workaround here, but it comes from federal law, not from where they buy the car. Under the Servicemembers Civil Relief Act, a state cannot tax a service member’s personal property, including vehicles, solely because the service member is stationed there. The statute’s definition of taxation explicitly covers fees and excises on motor vehicles.6Office of the Law Revision Counsel. 50 USC 4001 – Taxes Respecting Personal Property, Money, Credits, and Intangibles
If you’re stationed in a state with a 7% vehicle sales tax but your legal domicile is in a no-tax state, you pay based on your home of record. Many service members maintain domicile in New Hampshire, Montana, or Alaska for this reason. Some states also let military members defer sales tax payments until they leave active duty or return, with the specifics varying by state.
Situations That Change the Math
Even inside a sales-tax state, a few pieces of the transaction can shrink the taxable amount.
A trade-in usually reduces the base your tax is calculated on. Buy a $35,000 car, trade in one worth $12,000, and most states tax you on the $23,000 difference. At a 6% rate that’s $720 saved. A handful of states either don’t allow the credit or cap it, so confirm with your state’s DMV or revenue department before counting on it.
Manufacturer rebates applied at the dealership generally come off the taxable price the same way. Dealer incentives passed through to the buyer usually do too. A cash rebate mailed to you after closing typically doesn’t reduce what you were taxed on, because the dealer collected tax on the full price at the sale.
Private sales are still taxable in most states. The buyer pays at the DMV during title transfer. States differ on how they set the taxable value: some accept the price on the bill of sale, others use fair market value or book value if that’s higher, specifically to stop underreporting. In a fair-market-value state, writing a low number on the bill of sale won’t help and can invite an audit.
Gifted vehicles vary by state. Several states exempt gifts between family members from sales tax entirely or charge only a small flat fee. Others tax the fair market value even when no money changed hands. Check your state’s rule before assuming a family transfer is free.