Car Loan Calculator
Auto payment including trade-in, down payment and sales tax.
Enter your values
Enter the vehicle price in $.
Enter the down payment in $.
Enter the trade-in value in $.
Enter the sales tax in %.
Enter the interest rate in %.
Enter the term in months.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Monthly payment
- $605.24
- Amount financed
- $29,920.00
- Sales tax
- $1,920.00
- Total interest
- $6,394.33
- Total cost
- $40,314.33
Quick answer
A car payment is the amortised loan on the vehicle price plus sales tax, minus your down payment and trade-in value.
At a glance
| What it does | Auto payment including trade-in, down payment and sales tax. |
|---|---|
| Category | Auto |
| Inputs needed | Vehicle price, Down payment, Trade-in value, Sales tax, Interest rate, Term |
| Main output | Monthly payment |
| Cost | Free — no sign-up, no download |
How to use the Car Loan Calculator
- 1Enter the vehicle price and your sales tax rate.
- 2Add any down payment and trade-in value.
- 3Set the rate and term to see the payment.
Inputs explained
- Vehicle price($)
- Enter the vehicle price in $.
- Down payment($)
- Enter the down payment in $.
- Trade-in value($)
- Enter the trade-in value in $.
- Sales tax(%)
- Enter the sales tax in %.
- Interest rate(%)
- Enter the interest rate in %.
- Term(months)
- Enter the term in months.
Worked example
Using the values the calculator loads with:
Inputs
- Vehicle price32000 $
- Down payment4000 $
- Trade-in value0 $
- Sales tax6 %
- Interest rate7.9 %
- Term60 months
Results
- Monthly payment$605.24
- Amount financed$29,920.00
- Sales tax$1,920.00
- Total interest$6,394.33
- Total cost$40,314.33
Frequently asked questions
Is a 72-month loan a bad idea?
It lowers the payment but adds interest and keeps you underwater longer, since cars depreciate faster than long loans amortise.
Does trade-in reduce sales tax?
In many US states yes, the trade-in value is deducted before tax. This tool taxes the full price, which is the conservative case.
What do I need to enter into the Car Loan Calculator?
Just 6 values: vehicle price, down payment, trade-in value, sales tax, interest rate, term. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Car Loan Calculator work out the answer?
A car payment is the amortised loan on the vehicle price plus sales tax, minus your down payment and trade-in value. The working is shown step by step so you can verify the result by hand.
Is the Car Loan Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.