Formula
Auto loan payment formula
Payment = loan amount x monthly rate / (1 - (1 + monthly rate)^-months)Loan amount includes tax and fees, then subtracts down payment and trade-in value.
Auto Loan Calculator
Use this auto loan calculator to estimate a car payment from vehicle price, down payment, trade-in, sales tax, fees, APR, and loan term.
Planning estimate
Live calculator
Auto loan
Monthly payment$613.17
Based on a 60 month term.
Loan amount$31,040.00
Estimated sales tax is $2,240.00.
Total interest$5,749.95
Estimated interest paid over the full loan term.
What is being financed
The estimated financed amount is $31,040.00after adding sales tax and fees, then subtracting the down payment and trade-in value. Interest is estimated over 60 monthly payments.
Amount financed
This shows how the vehicle price turns into the loan balance.
| Part | Amount |
|---|---|
| Vehicle price | $32,000.00 |
| Sales tax | $2,240.00 |
| Fees | $800.00 |
| Down payment | -$4,000.00 |
| Trade-in value | -$0.00 |
| Loan amount | $31,040.00 |
Amortization preview
Annual principal, interest, and remaining balance.
| Year | Principal | Interest | Ending balance |
|---|---|---|---|
| Year 1 | $5,384.40 | $1,973.59 | $25,655.60 |
| Year 2 | $5,767.90 | $1,590.09 | $19,887.71 |
| Year 3 | $6,178.71 | $1,179.28 | $13,709.00 |
| Year 4 | $6,618.79 | $739.20 | $7,090.21 |
| Year 5 | $7,090.21 | $267.78 | $0.00 |
Use this as a planning estimate. Taxes, fees, rates, account terms, provider policies, local rules, and timing can change real-world results.
How to use
Steps
- Enter the vehicle price.
- Add down payment, trade-in, tax, and fees.
- Enter APR and loan term in months.
- Compare payment, loan amount, and total interest.
Example
Sample calculation
Vehicle price$32,000
Down payment$4,000
APR and term6.9% for 60 months
Amount financed$31,040
Payment$613.17/month
Calculator use
Best for
- Estimating affordability, payment, payoff, interest, APR, refinance, rent, or debt scenarios before a money decision.
- Comparing terms, rates, balances, fees, taxes, insurance, debt payments, or split shares with assumptions visible.
Before relying on it
Check first
- Treating an estimate as an approval, quote, credit decision, payoff statement, tax result, or legal payment obligation.
- Leaving out fees, escrow, insurance, property tax, PMI, minimum payments, compounding, promotional rates, or local rules.
- Comparing scenarios with different time horizons, upfront costs, credit assumptions, or one-time versus monthly costs.
Details
What to know before using the result
Amount financedPrice plus costs
The calculator adds tax and fees, then subtracts down payment and trade-in value to estimate the financed amount.
Monthly payment trapTerm changes total cost
A longer term can lower the monthly payment while increasing total interest and time spent owing on the vehicle.
Offer comparisonAPR, term, amount
Compare the loan amount, APR, interest rate, term length, and monthly payment together before picking the cheapest-looking payment.
Benchmarks
How to read the result
Down payment: Lowers risk.
A larger down payment can reduce the payment, total interest, and negative-equity risk.
60 months: Common comparison.
Often used as a middle-ground term when comparing offers.
72+ months: Long term.
May lower the payment but can increase total interest and negative equity risk.
Calculator accuracy
Methodology and assumptions
Formula, inputs, limitations and review record
Formula
Payment = loan amount x monthly rate / (1 - (1 + monthly rate)^-months)
Inputs used
Vehicle price, Down payment, Trade-in value, Sales tax, APR, Term months
Limitations
Money results are planning estimates. Actual taxes, account terms, rates, fees, timing, local rules, and provider policies can change the real-world result.
Review record
Catalog QA baseline on June 6, 2026. This date marks the catalog-wide automated and editorial QA baseline, not a tool-specific expert review.
Cite this page
Toolkit Shelf. Auto Loan Calculator. https://toolkitshelf.com/tools/auto-loan-calculator
FAQ
Common questions
How is a car payment calculated?
An auto loan payment is based on loan amount, monthly interest rate, and number of monthly payments.
Does this include sales tax?
Yes. Enter your estimated sales tax rate and fees so they can be included in the loan amount.
Should I include trade-in value?
Yes. Enter trade-in value if it reduces the amount you need to finance.
Why can a longer auto loan be risky?
A longer term may lower the monthly payment, but it can increase total interest and make it easier to owe more than the vehicle is worth.
Why can lender numbers differ from this result?
Lenders can use verified income, credit profile, reserves, fees, escrow rules, insurance, taxes, underwriting guidelines, and product-specific terms.
What assumption should I stress test?
Stress test rates, payment timing, fees, taxes, insurance, debt payments, and payoff timing before treating a loan or housing estimate as comfortable.
Leave passwords, account numbers, and private medical or tax information out of your report.