Car Loan Calculator
How New Mexico taxes car purchases
- State vehicle tax rate
- 4%
- Trade-in lowers the tax
- Yes
- Tax cap
- None
- Source
- Official source, checked 2026-10-05
These are the rules for a new car bought from a dealer. Used-car and private-sale rules can differ. How we check this data.
New Mexico charges 4% at the state level. Motor vehicle excise tax. That rate is higher than 7 states and lower than 39 states. County and city taxes may add to it, so check your local rate and enter the total in the calculator.
What to know in New Mexico
New Mexico doesn't apply its gross receipts tax to car sales. Instead it charges a 4% motor vehicle excise tax when the vehicle is titled.
The excise is figured on the price after your trade-in, discounts and rebates, so all of them lower it. The calculator takes the rebate off before figuring the tax. A rebate is worth slightly more here than in states that tax the full price.
Does New Mexico tax your trade-in?
No. New Mexico only taxes the difference between the new car's price and your trade-in. On a $35,000 car with a $10,000 trade-in, you'd pay $1,000.00 in state tax instead of $1,400.00, a saving of $400.00. That saving is worth counting when you compare a dealer's trade-in offer with selling the car yourself.
Example: a car loan in New Mexico
A $35,000 car with $5,000 down, $1,500 in fees, and a 60-month loan at 6.5% APR ($1,400.00 state tax, rolled into the loan):
- Monthly payment: $643.73
- Amount financed: $32,900
- Total interest: $5,724
- Total cost of the car: $43,624
Change any number in the calculator above to see your own figures.
Rebates and fees
In New Mexico, a rebate lowers the taxable price, and the calculator takes it off before figuring the tax. Title, registration and dealer documentation fees vary, so ask for an itemized out-the-door price and put the fee total in the calculator.
Other states
States with similar vehicle tax rates:
- Hawaii 4%
- New York 4%
- South Dakota 4%
- Wyoming 4%
- Virginia 4.15%