You can buy a car out of state, but you'll register and pay taxes in your home state, not where you bought it
Purchasing a vehicle in another state doesn't change where you register it or which state collects sales tax. The state where you live — your state of residence — is where you'll register the vehicle and where you owe sales tax, regardless of where the dealer or private seller is located. This applies whether you're buying from a dealership across the border or a private party in a different region.
The confusion often arises because some states have lower sales tax rates or no sales tax at all. Buying in a low-tax state doesn't exempt you from your home state's tax. Your home state's Department of Motor Vehicles (or equivalent agency) will require proof of purchase and will assess tax based on your state's rate when you register the vehicle.
The practical steps are straightforward: complete the purchase in the other state, arrange transportation or drive the vehicle home, then register and title it in your home state within the timeframe your state requires — typically 10 to 30 days after purchase.
Key Takeaways
- Sales tax is owed to your state of residence, not the state where you purchased the vehicle, even if that state has a lower tax rate.
- You must register and title the vehicle in your home state, and most states require this within 10 to 30 days of purchase.
- Bring the bill of sale, manufacturer's certificate of origin (for new vehicles), and the signed title from the seller when you register in your home state.
- Some states allow temporary permits or transit plates for driving an out-of-state vehicle home before registration is complete.
- Private party purchases and dealer purchases follow the same registration and tax rules in your home state.
How sales tax works when you buy out of state
Your home state taxes the purchase based on the vehicle's sale price and your state's tax rate. If you buy a $20,000 car in a state with no sales tax but live in a state with 7% sales tax, you owe that 7% to your home state — not zero. The out-of-state dealer does not collect your home state's tax; your home state's DMV or tax authority collects it when you register the vehicle.
Some states offer a credit for sales tax paid in another state, but this is rare and usually applies only if you paid tax to the other state. Since most out-of-state purchases don't involve your home state's tax being collected at the point of sale, you'll owe the full amount when you register. Check your state's DMV website for whether any tax credits or deductions explore to your situation.
The bill of sale from the dealer or private seller will show the purchase price. Bring this document to your home state's DMV when you register; the DMV will calculate the tax owed based on that price and your state's rate.
Registration and title transfer in your home state
After you buy the vehicle, you must register it in your home state. The timeline varies: most states require registration within 10 to 30 days of purchase. Delaying past this window can result in fines or penalties, so check your state's specific important date on its DMV website.
To register, you'll need the signed title from the seller, the bill of sale, proof of insurance, and proof of your identity and residency. For new vehicles from a dealership, you'll also receive the manufacturer's certificate of origin, which serves as the title until you register the vehicle. For used vehicles, the seller must sign over the existing title to you.
The registration process happens at your state's DMV, a county clerk's office, or an authorized third-party agent (like some auto tag services), depending on your state. You'll pay registration fees, which vary by state and sometimes by vehicle value or weight, in addition to sales tax.
Temporary permits and driving the vehicle home
Most states allow you to drive an out-of-state vehicle home without when ready registration, but the rules differ. Some states issue temporary permits or transit plates that allow you to operate the vehicle for a set period — often 30 days — while you arrange registration in your home state. Other states require you to have the vehicle transported or to obtain a temporary permit before driving it across state lines.
If you're driving the vehicle home yourself, check both your home state's rules and the state where you purchased it. The seller's state may have requirements for temporary operation. Your insurance company should also be notified before you drive the vehicle; most policies cover newly purchased vehicles for a short period, but confirming this prevents gaps in coverage.
If you're having the vehicle transported by a carrier or shipping company, the carrier typically handles temporary permits or documentation needed for transport. You won't need a temporary permit in this case.
Private party purchases versus dealer purchases
The registration and tax process is the same whether you buy from a private seller or a dealership. The main difference is documentation: a dealer provides the manufacturer's certificate of origin for new vehicles and handles some paperwork, while a private seller must sign over the existing title and provide a bill of sale.
With a private party purchase, make sure the seller signs the title correctly and provides it to you before you leave. Some states require the seller to sign in front of a notary; check your home state's requirements before you complete the purchase. A missing or incorrectly signed title can delay registration and create legal complications.
Dealers are more familiar with out-of-state sales and often prepare documents for out-of-state buyers. However, they still don't collect your home state's sales tax — that's your responsibility to pay when you register. Confirm with the dealer what documents they'll provide and what you need to bring to your home state's DMV.
What documents you need to bring to your home state's DMV
Gather these documents before you visit your home state's DMV to register the vehicle:
- The signed title from the seller (or manufacturer's certificate of origin for new vehicles)
- The bill of sale showing the purchase price
- Proof of insurance for the vehicle
- Your driver's license or state ID
- Proof of residency (utility bill, lease, or mortgage statement)
- The vehicle identification number (VIN) and odometer reading
Some states require additional documents, such as a lien release if the vehicle was financed, or an inspection report if the vehicle is used. Check your state's DMV website for a complete list before you visit. Bringing all required documents on your first visit prevents delays and multiple trips.
If you're registering a vehicle with an out-of-state lien (the seller still owes money to a lender), the lender must release the lien and sign the title. This is standard practice and the seller's responsibility to arrange before the sale is complete.
Avoiding common mistakes when buying out of state
One frequent error is assuming you can avoid sales tax by buying in a no-tax state. You cannot. Your home state will tax the purchase regardless of where you bought it. Another mistake is delaying registration past your state's important date, which triggers penalties and can complicate future vehicle sales or transfers.
Don't drive the vehicle without confirming your insurance covers it. Many policies automatically cover new purchases for a limited time, but gaps in coverage leave you uninsured and legally liable. Contact your insurance company the day you purchase the vehicle.
Verify the title is signed correctly before you leave the seller. An unsigned or incorrectly signed title can't be processed by your DMV and may require you to contact the seller again — a significant inconvenience if they're out of state. If the seller is a private party, consider having the signature notarized to prevent disputes later.
Finally, don't assume the dealer or seller will handle registration for you. Some dealers offer registration services for an additional fee, but it's your responsibility to may support the vehicle is registered in your home state by the important date. Confirm in writing what the dealer will and won't do.
Frequently Asked Questions
Do I have to pay sales tax twice if I buy out of state?
No. You owe sales tax only in your home state, based on your state's rate. The out-of-state seller doesn't collect your home state's tax, so you pay it when you register. You don't pay tax in both states.
Can I register the vehicle in the state where I bought it instead of my home state?
No. Vehicle registration is based on your state of residence, not where you purchased the vehicle. If you live in your home state, you must register there. Registering in another state where you don't live is illegal and can result in fines or license suspension.
What if the seller won't sign the title?
Don't complete the purchase. An unsigned title means you can't legally register the vehicle in your home state. If the seller refuses to sign, walk away. For private sales, consider using a notary to witness the signature and protect yourself.
How long can I drive an out-of-state vehicle before I have to register it?
Most states allow 10 to 30 days. Check your home state's DMV website for the exact important date. Driving past this window without registration is illegal and can result in fines or the vehicle being impounded.
Do I need a temporary permit to drive the vehicle home?
It depends on your state and the state where you bought it. Some states issue temporary permits automatically; others require you to request one. If you're having the vehicle transported, you don't need a permit. Check your home state's DMV website before you drive the vehicle across state lines.