Car Loan Calculator

A car loan is the one common consumer loan where the asset loses value faster than the balance comes down. That mismatch is what makes long vehicle terms expensive, more than the interest rate, and the monthly payment hides it.

Stretching the term to hit a monthly number

A 32,000 vehicle with 6,000 down leaves 26,000 to finance. At 7.9%:

• Over 5 years the payment is 525.94 and total interest is 5,556.57.
• Over 7 years the payment is 403.95 and total interest is 7,931.58.

Two extra years shave 122.00 off the monthly figure and add 2,375.02 to the total cost. Dealers negotiate on the monthly payment because that's the number buyers feel, and the term is what they adjust to get there.

The part the calculator can't show you

The seven-year loan still owes roughly two thirds of its principal at the three-year mark, while the car has already taken the steepest part of its depreciation in the first two years. Being underwater (owing more than the vehicle would sell for) is the normal state for a long-term car loan. It's why a write-off or an early trade-in on such a loan leaves you paying for a car you no longer have. This tool only models the loan side. It has no view on what the car is worth on any given day.

Reading the split

Monthly payment = P × r × (1+r)^n / ((1+r)^n − 1)
P = vehicle price − down payment

On the five-year version, month one is 171.17 interest and 354.78 principal. Car loans reach the principal-dominant phase almost straight away because the term is short. A mortgage is the opposite: there the crossover can sit two decades out. The amortisation schedule under the result breaks this down year by year and exports to PDF.

Costs that sit outside the financed amount

The result covers principal and interest. It doesn't cover:

• Registration, road tax, and any dealer documentation fee.
• Insurance, which for a financed vehicle usually has to be comprehensive cover, not third-party.
• Extended warranties, paint protection, and gap cover. If those are rolled into the financed amount, add them to the vehicle price before calculating. They're borrowed money and they accrue interest like everything else.
• Fuel, servicing, tyres, and depreciation, which together usually dwarf the interest.

One honest caveat: the advertised finance rate often depends on taking the dealer's own package, and the cash price is frequently negotiable in a way the finance rate isn't. You'll get more out of comparing a dealer offer against a bank or credit union quote, using the same principal here, than out of fine-tuning the term.

Nearby tools

The same reducing-balance engine drives the EMI calculator for any other fixed-rate loan, and the home loan calculator for property with a loan-to-value readout. If you're weighing a purchase against keeping the money invested, the ROI calculator gives you the other side of the comparison.