What will your car really cost to drive home?

Original data

The full cost of one deal in ten big states

We ran one deal through the calculators for ten of the largest car-buying states, where every title and registration fee is modeled: a $35,000 new gas car from a dealer, a $10,000 trade-in, a $1,000 manufacturer rebate and a $299 doc fee. Where local rates vary, we used the rate for the state's largest city or county. The difference between the cheapest and most expensive state comes less from the headline rate than from the rules: whether the trade-in and rebate are subtracted, and what each state adds at registration.

North Carolina comes out cheapest at $871.97 and California most expensive at $4,193.65, a gap of $3,321.68 on the same car. California's total is high mainly because it taxes the full $35,299 with no credit for the trade-in or the rebate, while Texas taxes the same deal on $24,000 and doesn't tax the doc fee. Florida's tax is low, but registering a car in Florida for the first time adds a one-time $225 fee. Georgia's 7% rate looks high, yet its title and tag fees are only $38.

Tax on that deal in every state

The same deal again, this time for all 50 states and DC, showing the tax alone. Title and registration are left out here because several states set them by value, weight or county in ways a single number can't capture. Where a state has local rates, we used the calculator's default, so check your own rate on the state's page. Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax, though Delaware charges a 5.25% document fee and Oregon a 0.5% privilege tax on new cars.

What goes into an out-the-door price

The out-the-door price is everything you pay to leave with the car: the agreed price, the dealer's documentation fee, sales tax, and the state's title and registration fees. Some states add extras such as county road fees, a plate fee or a yearly electric vehicle fee. A dealer's advertised price almost never includes these, which is why a $30,000 car often costs $32,000 or more once the paperwork is done.

Sales tax is usually the largest piece. The rate depends on the state where you register the car, and in many states on your county or city too. North Carolina charges 3%, while a buyer in Lancaster, California pays 11.75%. How the tax is figured matters as much as the rate: whether your trade-in is subtracted first, whether rebates count, and what value is used on a private sale. Those rules are where most online calculators go wrong, and they are what our calculation method is built around.

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