A balloon car loan splits the cost of the car in two: regular monthly payments that cover only part of what you borrow, and one large payment at the end, the balloon. The attraction is obvious — the monthly bill is lower than on a regular loan for the same car. The catch is just as clear: the day the loan ends you owe a lump sum, and you have paid more interest for the privilege of deferring it. This calculator shows both sides.
How to use the balloon car loan calculator
- Enter the price, down payment, trade-in value, sales tax and fees to set the amount financed.
- Enter the APR and the term in months.
- Enter the balloon payment due at the end of the term (use zero to see a regular loan).
- Compare the monthly payment, the monthly saving, the total interest and the extra interest against a loan with no balloon.
For a normal loan, the car payment calculator and the auto loan calculator give the baseline. To compare with leasing, see the lease vs buy car calculator.
Balloon loan formula
Total interest = Payment × n + B − L
- L — amount financed: price × (1 + tax) + fees − down payment − trade-in
- B — the balloon; r — APR ÷ 12; n — number of monthly payments
- B ÷ (1 + r)^n — the balloon's present value, which is the part of the loan the monthly payments do not need to repay
Worked example: $27,000 loan, $9,000 balloon
- Present value of the balloon: 9,000 ÷ 1.005^60 = $6,672.
- Principal to be repaid by payments: 27,000 − 6,672 = $20,328.
- Payment: 20,328 × 0.005 ÷ (1 − 1.005^−60) = $392.99, against $521.99 without a balloon.
- Total interest: $392.99 × 60 + 9,000 − 27,000 = $5,579, which is $1,260 more than the regular loan.
Effect of the balloon size
This table holds the price at $30,000 with $3,000 down, 6% APR and 60 months, and changes only the balloon. Every figure was calculated with the formula above.
| Balloon (share of $30,000 price) | Monthly payment | Total interest | Total paid incl. balloon |
|---|---|---|---|
| 0% ($0) | $521.99 | $4,319 | $31,319 |
| 10% ($3,000) | $478.99 | $4,739 | $31,739 |
| 20% ($6,000) | $435.99 | $5,159 | $32,159 |
| 30% ($9,000) | $392.99 | $5,579 | $32,579 |
| 40% ($12,000) | $349.99 | $6,000 | $33,000 |
Is a balloon loan a good idea?
A balloon can make sense when you are certain you will have the money — or the car's value — to meet it. Some people plan to sell the car just before the balloon is due, using the sale price to pay it off; the loan then acts like a long rental. That plan only works if the car is worth at least the balloon at that time. Cars lose value unpredictably, so the risk lies with you, not the lender. Estimate it with the car depreciation calculator and keep a safety margin.
The alternatives are a regular loan, where payments are higher but nothing is due at the end, or a lease, where the lender carries the resale risk. If the balloon is large relative to the car's likely value, you may end up refinancing it, which brings fees and another round of interest. If you are already underwater on a loan, see the negative equity calculator.
The result is an estimate based on the standard payment formula. Check the lender's contract for exact fees, the day-count rules and any penalty if you pay the balloon early or late.
Sources
The payment formula is the standard present-value annuity formula, adjusted for a lump sum at the end — the same time-value-of-money relationship used for mortgages and loans in any finance text. The zero-balloon check agrees with standard amortization tables. Example amounts are illustrative and not lender quotes.
Frequently asked questions
What is a balloon payment on a car loan?
A balloon loan has smaller monthly payments because part of the loan is deferred into one large payment at the end of the term. You must pay it, refinance it or sell the car to cover it.
How is the monthly payment with a balloon calculated?
The balloon is discounted to today’s value at the loan’s monthly rate and subtracted from the amount financed; the regular payment formula is then applied to the remainder.
Does a balloon loan cost more interest?
Usually yes. You owe more principal for longer, so you pay more interest in total, as the “extra interest” result shows.
What if the car is worth less than the balloon?
You would owe more than the car can be sold for and would need to pay the difference in cash or refinance. Estimate the car’s value at the end with the car depreciation calculator before choosing the balloon size.
Is a balloon the same as a lease?
They look alike, but a lease lets you return the car with no balloon to pay; with a balloon loan you own the car and you owe the full balloon. See the lease vs buy calculator to compare.