Finance Calculator
Sales Tax & Fees Calculator
Estimate your true out-the-door price — the sticker price plus sales tax, dealer doc fee, and registration, minus any trade-in credit.
Purchase Details
0% in OR, MT, NH, DE, AK · ~7–8%+ combined in many states.
Out-the-Door Price
total you'll actually pay
Sales Tax
$1,755
Taxable Amount
$27,000
Total Fees
$800
Trade-in Tax Savings
$520
How out-the-door price works.
Most states tax only the difference after a trade-in, which can save hundreds. A few (California, Virginia, Maryland, and others) tax the full price regardless of trade-in. The out-the-door price is what actually leaves your bank account — often $2,000–4,000 more than the sticker once tax and fees are added.
Why the out-the-door price beats the monthly payment
Dealers negotiate in monthly payments because it hides the real number. Two deals with the same payment can differ by thousands once you account for term length, tax, doc fees, and add-ons. Always negotiate on the out-the-door price — the single total that includes the vehicle, sales tax, doc fee, title, and registration — and compare that figure across dealers.
The trade-in tax credit
In most states, trading in your old car reduces the taxable amount of the new one. On a $35,000 car with an $8,000 trade-in and a 6.5% tax rate, that credit saves about $520 — money you'd forfeit by selling the old car privately. In high-tax states this can tip the decision toward trading in, even if a private sale would fetch a slightly higher price. California, Virginia, Maryland, Michigan, and a handful of others don't offer the credit and tax the full purchase price.
Dealer fees: real vs junk
Title and registration are legitimate government charges. The doc fee is a real processing cost but ranges from a capped $75–$150 in some states to $700+ in unregulated ones — push back if it looks high. Everything else on the add-on menu — paint sealant, fabric protection, nitrogen-filled tires, VIN etching, dealer prep — is pure profit padding you can decline. Ask for the itemized breakdown and cross out anything you didn't request.
Frequently asked questions.
Which states have no car sales tax?
Oregon, Montana, New Hampshire, Delaware, and Alaska have no statewide sales tax on vehicles (Alaska allows local taxes). Buying there generally doesn't help if you register the car in a taxed state, though.
What is a doc fee?
The documentation (or "doc") fee is what dealers charge to process paperwork. It varies wildly by state — from $75 capped states to $700+ in unregulated ones. It's often negotiable.
Do I pay tax on the trade-in?
In most states, no — the trade-in value is subtracted before tax is calculated, lowering your bill. This "trade-in tax credit" is a real reason to trade in rather than sell privately in high-tax states.
Do I pay sales tax where I buy or where I register the car?
Where you register it. Your home state and county collect the tax based on your address, not the dealership's location — which is why buying in a no-tax state doesn't help if you register the car back home. The DMV reconciles this when you title the vehicle.
Can I avoid car sales tax by buying out of state?
Almost never legally. States require you to pay your home state's tax at registration and give credit for any tax already paid elsewhere. Attempting to register the car at an out-of-state address you don't actually live at is tax fraud.
Which dealer fees are negotiable?
The doc fee is often negotiable (or capped by state law), and dealer add-ons like paint protection, nitrogen tires, and VIN etching are almost always optional. Sales tax, title, and registration are government charges you can't negotiate. Always ask for an itemized out-the-door quote in writing.