Vehicle financing estimate
Auto Loan Calculator
Estimate a vehicle loan payment using the price, down payment, trade-in credit, taxes and fees, APR, and term you enter.
Auto loan assumptions
Start clean or load the example.
Estimated monthly payment
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Enter a vehicle price, APR, and term to calculate an estimate.
Scenario comparison
Compare two auto loan options
Compare payment, interest, amount financed, and total loan payments without treating the lower number as a lender recommendation.
Scenario A
Enter or copy one vehicle-financing option.
Scenario B
Change only the assumptions you want to test.
Difference
Neutral arithmetic differences between the two completed scenarios.
Browser-local continuity
Saved calculations
Keep useful estimates in this browser and export a local backup when you want portability between devices or browsers.
Save current estimate
Saving does not upload the estimate.
This browser
0 saved calculations
Readable local artifact
Auto Loan Estimate Report
Review the estimate, assumptions, comparison, and method in a document-style preview before copying, downloading, printing, or sharing.
Auto loan estimate
Auto Loan Estimate Report
No complete estimate is currently available.
Assumptions
What this estimate means
Enter assumptions in Calculator to create a complete report.
Comparison and method
Comparison, method & review notes
Scenario comparison
Complete both Compare scenarios to include a side-by-side difference summary.
Method
Amount financed = vehicle price + taxes and fees - down payment - trade-in credit. The monthly payment uses the standard fixed-rate amortization formula. When APR is 0%, payment = amount financed / term.
Review before deciding
- Taxes, fees, incentives, rebates, and trade-in tax treatment vary by location and transaction.
- Trade-in credit should reflect the net credit you expect to apply to this purchase.
- Dealer add-ons, insurance, maintenance, fuel, registration renewals, and other ownership costs are not inferred by this calculator.
- Use the lender/dealer disclosures and final contract for the actual payment and total cost.
Learn
Understand the estimate
Use the sections below for the inputs, examples, common questions, and calculation method.
How to use the Auto Loan Calculator
- Enter the vehicle price before financing.
- Enter the taxes and fees you expect to finance. This tool does not guess local tax rules.
- Enter the cash down payment and the net trade-in credit you expect to apply.
- Enter APR and term. A 0% APR is supported.
- Review the amount financed, monthly payment, total interest, and total loan payments.
- Use Compare when you want to test a different rate, term, price, or upfront contribution.
Examples
FAQ
Does this calculator know my state or local vehicle tax rules?
No. Enter taxes and fees as your own assumption. Trade-in tax treatment, rebates, incentives, registration charges, and dealer fees can vary.
What should I enter for trade-in credit?
Enter the net trade-in credit you expect to apply to the purchase. If you still owe money on the trade-in, use the credit that remains after accounting for the payoff rather than the vehicle's gross trade value.
Does 0% APR work?
Yes. With 0% APR, the calculator divides the amount financed by the number of monthly payments.
Why can a longer term lower the payment but increase interest?
A longer term spreads principal over more payments, which can lower the monthly amount. With a positive interest rate, keeping a balance outstanding longer can increase total interest.
Does Mycelgrid upload my vehicle or financing assumptions?
This tool calculates in the browser. Saved calculations use browser-local storage on this device. This tool does not upload the assumptions you enter for processing.
Method
Amount financed = vehicle price + taxes and fees - down payment - trade-in credit.
For APR above 0%, the monthly payment uses the standard fixed-rate amortization formula: payment = principal × monthly rate × (1 + monthly rate)term / ((1 + monthly rate)term - 1).
For APR of 0%, payment = principal / term. The amortization schedule applies interest first and principal second for each monthly row. Rounding in an actual lender contract can create small differences.