Texas Car Payment Calculator

The negotiated sale price before tax.
Cash you pay up front. Leave blank for $0.
Value of the vehicle you trade in at a licensed Texas dealer in the same transaction. Texas taxes price minus trade-in, so a trade-in also cuts your tax.
Texas motor vehicle sales tax is a flat 6.25% statewide with no local add-on (Texas Comptroller of Public Accounts). 8.25% is the general sales-tax cap and does not apply to vehicle sales.
Annual percentage rate from your lender or pre-approval.
Shorter terms cost more per month but less interest overall.

Try it: $30,000 price, $5,000 down, $5,000 trade-in, 6.25% tax, 7% APR, 60 months.

Texas Car Payment Calculator

Quick Answer

In Texas, your car payment starts with the state’s motor vehicle sales tax: 6.25% of the sale price minus your trade-in allowance — a flat statewide rate with no county or city add-on. A trade-in at a licensed Texas dealer therefore cuts both your loan and your tax. Example: a $30,000 car with a $5,000 down payment and a $5,000 trade-in, at 6.25% tax and 7% APR over 60 months, costs $426.96 per month. Use the calculator above with your own price, down payment, trade-in, APR, and term for your exact figure.

How Your Texas Car Payment Is Calculated

Your monthly payment is not based on the sticker price alone. It is based on the amount financed, and in Texas the tax step in the middle matters more than in most states. Here is the order:

  1. Taxable amount — vehicle price minus trade-in value. A $30,000 car with a $5,000 trade-in is taxed on $25,000, not $30,000.
  2. Texas tax — 6.25% of that taxable amount. On $25,000, that is $1,562.50.
  3. Amount financed — price plus tax, minus down payment, minus trade-in. For the example: $30,000 + $1,562.50 − $5,000 − $5,000 = $21,562.50.
  4. Monthly payment — the standard amortization formula lenders use: M = P × r(1+r)^n / ((1+r)^n − 1), where P is the amount financed, r is your APR divided by 12, and n is the term in months. At 0% APR, the payment is simply the amount financed divided by the number of months.

The calculator shows every one of these steps, plus the total of all payments, the total interest, and the total cost (down payment plus all payments).

Worked Example

A buyer in Texas purchases a car for $30,000, trades in an old car worth $5,000 in the same transaction at a licensed dealer, puts $5,000 down, and finances the rest for 60 months at 7% APR:

StepCalculationAmount
Vehicle price—$30,000.00
Less trade-in—−$5,000.00
Taxable amount$30,000 − $5,000$25,000.00
Texas tax (6.25%)$25,000 × 6.25%$1,562.50
Tax saved by trading in$5,000 × 6.25%$312.50
Amount financed$30,000 + $1,562.50 − $5,000 − $5,000$21,562.50
Monthly payment (7% APR, 60 months)Amortization formula$426.96
Total of payments$426.96 × 60$25,617.80
Total interest$25,617.80 − $21,562.50$4,055.30
Total cost (down payment + all payments)$5,000 + $25,617.80$30,617.80

Texas Motor Vehicle Sales Tax, Explained

Texas charges a 6.25% motor vehicle sales tax on the sales price minus any trade-in allowance, according to the Texas Comptroller of Public Accounts. The rate has been 6.25% since September 1991.

An important correction to a common misunderstanding: the Texas motor vehicle tax is flat statewide. There is no county or city add-on for vehicle sales. The often-quoted 8.25% figure is the cap for Texas general sales tax (6.25% state plus up to 2% local), and it does not apply to motor vehicle sales. This calculator uses the correct flat 6.25% rate — the only motor vehicle rate in Texas, with no local add-on (Texas Comptroller of Public Accounts).

The trade-in credit only counts in one situation. The trade-in must be part of the same transaction at a licensed Texas dealer. If you sell your old car privately and then use the cash as a down payment on the new car, you get no tax reduction — you pay 6.25% on the full price. On a $15,000 car, trading in instead of selling privately saves $937.50 in tax (6.25% of $15,000). That saving is on top of the trade-in value itself, which is why a dealer offer slightly below a private buyer’s offer can still come out ahead once tax is counted.

Buying from a dealer vs. a private seller. When you buy from a licensed Texas dealer, the dealer generally collects the tax at the time of sale and remits it to the county tax assessor-collector when the vehicle is titled and registered. When you buy from a private seller, you are responsible for paying the tax to the county tax assessor-collector, generally within 30 calendar days of purchase (60 days for active-duty military personnel).

The used-car rule that surprises buyers: Standard Presumptive Value (SPV). For private-party purchases of used vehicles, Texas may base the tax on the Standard Presumptive Value — a wholesale market value published from auction data — rather than your sale price, if your sale price is below it. This mainly affects private deals priced well below market value. Dealer purchases at market prices are generally unaffected, but if you are buying a used car privately for much less than similar cars sell for, check the SPV before you finalize the deal so the tax bill does not surprise you.

Other Texas motor vehicle tax cases. A new Texas resident who brings in a vehicle previously registered in their name in another state pays a flat $90 new-resident tax instead of the full use tax. A gifted vehicle carries a $10 tax, and an even exchange of vehicles carries a $5 tax. If you buy a car in another state and bring it to Texas, you generally owe 6.25% use tax, with credit for sales or use tax already paid to the other state.

Other Costs Not in the Monthly Payment

The calculator covers price, Texas tax, down payment, trade-in, APR, and term. It does not include the following, so ask your dealer for the full out-the-door total before you sign:

  • Title fee — typically $33 for a new title.
  • Registration — weight-based; typically $50.75 per year for a passenger vehicle under 6,000 lbs, plus county road and bridge fees (often $10–$20) and an inspection transfer fee (around $7.50). Most buyers see roughly $90–$130 in total title and registration costs for a standard passenger car.
  • Dealer documentation (doc) fee — Texas sets no legal cap on doc fees, so they vary widely, commonly $150–$300 and sometimes $400–$600. Unlike in some states, this fee is negotiable in Texas.
  • Electric vehicle registration surcharge — Texas charges an additional $400 in the first year for a newly registered electric vehicle and $200 per year on renewals, a fee introduced in 2023.
  • Insurance, fuel, and maintenance — none of these are part of a loan payment, but they are part of owning the car. Lenders require insurance before delivery.

If your dealer agrees to roll title, registration, and doc fees into the loan, add them to the vehicle price field in the calculator to see the payment on the true financed amount.

How to Lower Your Texas Car Payment

  • Trade in at the dealer, in the same transaction. You get the trade-in value off the loan and 6.25% of it off your tax. Selling privately only wins if the private price beats the dealer offer by more than the tax saving plus the hassle.
  • Put more down. Every extra $1,000 down reduces the amount financed by $1,000 and cuts both the payment and the interest.
  • Shorten the term if you can afford the payment. On the worked example, 48 months instead of 60 costs $89.38 more per month but saves $833.44 in interest.
  • Improve your APR before you shop. A pre-approval from a bank or credit union gives you a rate to compare against the dealer’s offer. Even one percentage point changes the total interest by hundreds of dollars on a typical loan.
  • Negotiate the doc fee and the price, not just the payment. A dealer who only talks about the monthly payment can stretch the term to make any price look affordable. Always compare the total of payments, not just the monthly figure.

Frequently Asked Questions

What is the car sales tax rate in Texas?

Texas charges a flat 6.25% motor vehicle sales tax on the sale price minus any trade-in allowance. There is no county or city add-on for vehicle sales, so 6.25% is the total motor vehicle tax rate statewide. The 8.25% figure you may see elsewhere is the cap for general Texas sales tax, not the vehicle rate.

Does trading in a car reduce my Texas sales tax?

Yes, when the trade-in is part of the same transaction at a licensed Texas dealer. The trade-in value is subtracted from the price before the 6.25% tax is applied, so trading in a $10,000 car saves $625 in tax. Selling your car privately and using the cash as a down payment does not reduce the taxable amount.

How is a Texas car payment calculated?

First, Texas tax (6.25% of price minus trade-in) is added to the price, then the down payment and trade-in are subtracted to get the amount financed. That amount is then spread over the loan term with interest using the standard amortization formula. At 0% APR, the monthly payment is simply the amount financed divided by the number of months.

What happens if I buy a used car in Texas for less than its market value?

For private-party sales, Texas may tax you on the Standard Presumptive Value (SPV) — a wholesale market value — instead of your sale price, if your price is below it. Check the SPV before finalizing a private-party deal priced well below market value.

Does a longer loan term save me money?

No — it lowers your monthly payment but raises your total cost. On a $21,562.50 loan at 7% APR, stretching from 48 to 72 months drops the payment from $516.34 to $367.62 but raises total interest from $3,221.86 to $4,906.08. A longer term can also leave you owing more than the car is worth for longer.

What fees are not included in this calculator?

Title (typically $33), registration (typically $50.75 for vehicles under 6,000 lbs, plus county fees), dealer documentation fees (no Texas cap; commonly $150–$300), and the electric vehicle registration surcharge ($400 first year, $200 renewals) are not included. Ask your dealer for the out-the-door total, and add any fees rolled into the loan to the vehicle price field.

Disclaimer

This calculator provides estimates for planning purposes only. It is not a loan offer, tax advice, or financial advice. Your actual monthly payment, tax, and fees depend on your lender, your credit, the dealer’s fees, and your county tax assessor-collector’s figures. Confirm the final tax and out-the-door total with your dealer and the Texas Comptroller of Public Accounts or your county tax office before signing.

Sources

Texas Comptroller of Public Accounts, Motor Vehicle – Sales and Use Tax; Texas Comptroller of Public Accounts, Motor Vehicle Tax Guide (current tax rate 6.25 percent). Title, registration, and documentation fee figures are typical amounts reported for Texas vehicle transactions; confirm current fees with the Texas Department of Motor Vehicles or your county tax assessor-collector.

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