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Auto Loan Calculator

Estimate a monthly car payment, total interest, and total financed cost.

Best for: Estimate a monthly vehicle loan payment, total interest, and total financed cost from the amount financed, APR, and term.

Your assumptions

Calculate your estimate

Your result

Auto Loan estimate

Monthly payment
$693.04
Total interest
$6,582.52
Total repaid
$41,582.52

How to use this auto loan calculator

Use this auto loan calculator after estimating the amount you will actually finance, not only the sticker price. Compare rates and terms to see when a lower monthly payment increases the total cost of the vehicle.

  1. 1

    Estimate the amount financed

    Start with the negotiated price, then account for the down payment, trade-in, taxes, fees, and any existing negative equity outside the calculator.

  2. 2

    Use the offered APR

    Enter the lender or dealer rate and the exact term rather than relying on a promotional example.

  3. 3

    Compare total cost

    Test a shorter term or lower purchase price and compare total interest with the resulting monthly payment.

Worked planning example

Example: lower payment versus lower total cost

Set up

Compare financing $35,000 for 60 months with the same amount financed for 72 months.

Compare

The longer term may reduce the monthly payment while increasing total interest and the time the balance remains above the vehicle value.

Takeaway

Choose the term by balancing cash flow with total borrowing cost and depreciation risk.

Look beyond the advertised monthly payment

Dealer presentations can emphasize payment size while changing the term, financed amount, or upfront cash.

  • Compare the amount financed with the vehicle’s out-the-door price.
  • Separate the value of a trade-in from the price negotiation.
  • Include insurance, maintenance, fuel, and registration in the ownership budget.

Calculation methodology and assumptions

For this auto loan estimate, Silvia uses amount financed, annual interest rate, loan term. Estimate a monthly car payment, total interest, and total financed cost. Results are estimates, not quotes, tax advice, or investment recommendations.

Frequently asked questions

What amount should I enter for an auto loan?

Enter the amount that will remain after the down payment and trade-in, including any taxes, fees, add-ons, or prior balance that will be financed.

Is a longer car loan always cheaper each month?

A longer term often lowers the scheduled payment, but it generally increases total interest and can keep the loan balance above the vehicle’s value for longer.

Does the result include vehicle ownership costs?

No. The estimate covers the financed loan. Insurance, maintenance, repairs, registration, fuel, parking, and depreciation are separate.

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Put the estimate in context with Silvia

Connect your vehicles, loans, cash, and investments, then ask Silvia to track how a purchase or lease affects your complete financial picture.

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