Finance

Car Loan Total Interest Calculator (15 Years)

Estimate total interest paid over a loan. This car version uses a 15-year planning term as its starting point.

This means the Total interest is the extra cost of borrowing beyond the loan amount, and the Total paid is the loan amount plus that interest over the full 15-year term.

Formula

Total interest equals monthly EMI times number of payments minus the principal.

How it works

A longer term lowers the monthly payment but raises total interest.

Worked example

Loan amount $200,000, annual rate 6.5%, term 15 years. First, the monthly rate is 6.5% divided by 12, which is 0.0054167, and the number of payments is 15 times 12, which is 180. Using the EMI formula, the monthly payment is $1,742.21. Over 180 payments the total paid is $313,598.65, calculated from the unrounded EMI exactly as the calculator does. Total interest is $313,598.65 minus $200,000, which is $113,598.65. That is 56.8% of the amount borrowed.

Who this term suits for a car buyer: A 15-year term does not suit an ordinary car buyer looking for a good deal. Its only honest use is as a comparison: it shows what happens when a loan outlives the car, because most cars will be replaced at least once in 15 years, yet the payment of $1,742.21 a month continues. A buyer who still considers it must check what happens on sale or write-off, and whether the loan balance could be larger than the car's value.

FAQs

Why does a longer loan cost more interest?
More payments mean interest is charged for longer, so total interest rises even if each payment is smaller.

Is this car calculator exact?
No, it is an estimate for planning only, based on the numbers you enter.

Are these figures financial advice?
No, they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.

Is a 15-year car loan too long when cars lose value and wear out?
For an ordinary car, yes. Most cars will be replaced at least once in 15 years, yet the payment of $1,742.21 a month continues for 180 months. The buyer risks paying for a car that has already been sold or scrapped, and total interest reaches $113,598.65, which is 56.8% of the amount borrowed. A 15-year term only makes sense as a warning comparison, not as a default choice.

Why is the interest $113,598.65 when the rate is only 6.5%?
Because 6.5% is charged every year for 15 years, on a balance that falls only slowly in the early years. The monthly rate is 0.0054167, and over 180 payments that small monthly charge adds up to $113,598.65, even though the annual rate sounds modest. Time, not just the rate, is what makes a long loan expensive.

What happens to a car loan if the car is sold or written off before 15 years?
The loan does not disappear with the car. The remaining balance must still be repaid, and insurance after a write-off may pay only the car's current value, which can be less than the balance still owed. That gap is a real risk on a long term, because the balance falls slowly while the car's value falls quickly. Check gap cover and the lender's settlement terms before signing a long car loan.

Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.