LOANS & DEBT
Balloon Payment Calculator — Balloon Loan & Mortgage
By Worldtickers ·
Calculate the regular monthly payment on a balloon loan and the large lump-sum balloon payment due when it matures — plus how much of the original balance is still outstanding when that day arrives.
This balloon payment calculator — balloon loan & mortgage tool focuses on calculating the regular monthly payment on a balloon loan and the large lump-sum balloon payment due when it matures — plus how much of the original balance is still outstanding when that day arrives. Use it to compare borrowing costs, monthly payments, interest charges, payoff timelines, and refinance or repayment choices by changing the rate, term, balance, and payment assumptions.
Balloon Payment Calculator
Balloon Payment Calculator
Enter the loan amount, rate, the amortization schedule the payment is based on, and when the balloon is actually due, to see your regular monthly payment and the lump sum due at the end.
What Is a Balloon Payment?
A balloon payment is the large, single lump-sum payment due at the end of certain loans — a final bill that covers whatever principal remains once the loan reaches its maturity date. Balloon loans are common in commercial real estate, some residential mortgages, auto loans, and equipment financing, and they show up whenever a lender structures monthly payments around a longer amortization period than the actual life of the loan.
Here's the mechanism: the lender calculates your regular monthly payment as if the loan would be paid off in full over, say, 30 years (the "amortization term"). But the loan agreement actually matures much sooner — in 5, 7, or 10 years (the "balloon due date"). Since your payment was sized for a 30-year payoff, only a small fraction of each early payment goes toward principal — most of it is interest. When the balloon due date arrives, whatever principal hasn't been paid down yet comes due immediately as a single payment.
This structure lets borrowers enjoy lower monthly payments than a loan that's fully amortized over the shorter actual term, in exchange for taking on the risk (and responsibility) of dealing with that final lump sum — usually by refinancing, selling the asset, or, less commonly, paying it off in cash. For loans without a balloon structure, see our mortgage calculator for a standard fully amortizing payment schedule.
How to Use This Calculator
Enter four numbers and the calculator handles the rest.
Loan Amount and Interest Rate
Enter the original principal borrowed and the annual interest rate on the loan. These drive both the regular monthly payment and, ultimately, the size of the balloon.
Amortization Term
This is the schedule your regular monthly payment is calculated on — the number of years the lender uses as if the loan would fully pay itself off. A longer amortization term produces a smaller monthly payment, but leaves more principal outstanding at any given point in time.
Balloon Due Date
This is when the loan actually matures and the full remaining balance is due — always a shorter period than the amortization term. Enter it in years; the calculator uses the remaining-balance formula to compute exactly how much is left owed at that point, which becomes your balloon payment.
The Formula Explained
The regular monthly payment uses the standard loan amortization formula: M = P × r × (1 + r)^n / [(1 + r)^n − 1], where P is the loan amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the number of monthly payments in the amortization term (amortization years × 12).
The balloon payment uses the remaining-balance formula: B(k) = P × [(1 + r)^n − (1 + r)^k] / [(1 + r)^n − 1], where k is the number of payments actually made before the balloon comes due (balloon due date in years × 12). This formula gives you the exact outstanding principal after k payments on an n-payment amortization schedule — it's the same math a lender's payoff statement uses.
Worked example: a $300,000 loan at 6.5%, amortized over 30 years (n = 360 payments), with a balloon due in 7 years (k = 84 payments). The monthly rate r = 6.5 ÷ 12 ÷ 100 = 0.0054167. Plugging into the payment formula gives a regular monthly payment of $1,896.20. Plugging the same numbers into the remaining-balance formula with k = 84 gives a balloon payment of $271,248.73 — meaning after 7 years and roughly $159,281 in total payments (84 × $1,896.20), over 90% of the original $300,000 is still owed in one shot.
Real-World Examples
Example 1: Commercial Property Loan
A small business takes out a $500,000 commercial real estate loan at 7% interest, amortized over 25 years, with a 5-year balloon — a very typical structure for commercial mortgages, where lenders rarely offer 30-year fixed terms the way residential mortgages do. The regular monthly payment comes to $3,533.90. After 5 years (60 payments), the balloon payment due is $455,810.76 — over 91% of the original loan is still outstanding, since 25-year amortization schedules pay down principal very slowly in the early years.
Example 2: Equipment or Vehicle Financing
A business finances $40,000 of equipment at 8% interest, amortized over 10 years, with a 5-year balloon — a shorter amortization schedule than the real estate examples, which shrinks the balloon considerably as a percentage of the loan. The regular monthly payment is $485.31. After 5 years (60 payments), the balloon payment due is $23,934.75 — about 60% of the original amount, noticeably smaller as a percentage than the 30-year and 25-year mortgage examples above, because a 10-year amortization schedule pays down principal much faster than a 25- or 30-year one.
Tips and Limitations
Have an Exit Plan Before You Sign
Never take on a balloon loan without a concrete plan for what happens on the due date — refinancing into a new loan, selling the asset, or (rarely) having the cash on hand. Lenders will generally want to see evidence of this plan too, especially for larger commercial balloon loans.
Refinancing Isn't Guaranteed
The single biggest risk of a balloon structure is assuming refinancing will always be available when you need it. Interest rates, your credit profile, the asset's appraised value, and general lending conditions can all shift between when you take out the loan and when the balloon matures — sometimes unfavorably. Model a refinance scenario ahead of time with our refinance calculator using the balloon amount as the new loan's principal, so you know roughly what a replacement payment could look like under a range of rate assumptions.
Extra Payments Can Shrink the Balloon Meaningfully
Because amortizing loans front-load interest, any extra principal you pay early in the term reduces the eventual balloon by more than the same extra payment would if made later. If your loan permits prepayment without penalty, even modest additional payments in the first few years can measurably soften the balloon due at maturity.
This Calculator Assumes a Fixed Rate and No Missed Payments
The formulas here assume a constant interest rate and on-time payments throughout. Adjustable-rate balloon structures, missed payments, or loan modifications will change the actual balance due — always confirm the exact payoff figure with your lender as the balloon date approaches rather than relying solely on this estimate.
Frequently Asked Questions
What is a balloon payment?
A balloon payment is a single large lump-sum payment due at the end of a loan's term, covering whatever principal balance is still outstanding at that point. Balloon loans are structured with regular monthly payments calculated as if the loan would be paid off over a long amortization schedule — say 30 years — but the loan actually matures much sooner, often in 5 to 10 years. Because the monthly payment was sized for a much longer payoff period, a large chunk of principal never gets paid down through regular payments, and that remainder becomes the balloon payment.
Why would anyone choose a loan with a balloon payment?
The main appeal is lower monthly payments during the loan term compared to a fully amortizing loan of the same length, since the payment is calculated over a much longer notional schedule. This can make sense for a business expecting higher cash flow later, a property owner planning to sell or refinance before the balloon comes due, or short-term financing where the borrower doesn't intend to hold the loan (or the asset) for its full theoretical amortization period. It shifts risk toward the borrower, though, since the balloon still has to be dealt with somehow when it matures.
What is a balloon payment calculator with a refinance option, and how does refinancing work here?
Most balloon borrowers never plan to pay the balloon payment in cash — instead, the plan from day one is to refinance the remaining balance into a new loan (or sell the underlying asset) before the balloon comes due. A "refinance option" simply means modeling that path: once you know the balloon amount from this calculator, you'd plug that figure into our refinance calculator as the new loan's principal to estimate what a replacement loan's payment would look like at prevailing rates. This calculator focuses on determining the balloon amount precisely; use our refinance calculator to plan the next step.
What's the biggest risk with a balloon payment loan?
The biggest risk is being unable to refinance or sell when the balloon actually comes due — for example, if interest rates have risen sharply, your credit profile has weakened, the property's value has dropped below the loan balance, or lending standards have simply tightened since you took out the loan. If none of those paths are available, you're left needing to pay a potentially six-figure lump sum in cash, which few borrowers can do without a plan. This is why balloon loans are generally considered higher-risk than a fully amortizing loan of the same term, and why lenders typically require strong credit and a clear exit strategy to approve one.
Is a balloon mortgage the same as an interest-only mortgage?
No, though they're often confused. An interest-only mortgage has payments that cover only interest for a set period, with the full original principal still owed afterward (either as a lump sum or by converting to a fully amortizing payment). A balloon mortgage, as modeled here, makes payments that include both principal and interest — calculated on a long amortization schedule — but the loan simply matures early, leaving whatever principal is left as the balloon. A balloon loan usually pays down at least some principal before maturity; a pure interest-only loan pays down none.
Can I pay off a balloon loan early to avoid the balloon payment?
Yes, in most cases you can make extra principal payments throughout the loan term to shrink the eventual balloon, or pay off the loan entirely before it matures, subject to any prepayment penalty in your loan agreement. Making even modest extra payments early in the term can meaningfully reduce the balloon amount, since amortizing loans front-load interest and extra principal paid early avoids the most interest overall. Check your specific loan documents for prepayment terms before assuming this is penalty-free.
How large is a typical balloon payment relative to the original loan?
It depends heavily on the gap between the amortization schedule and the balloon due date, and on the interest rate. As a rough pattern, the longer the amortization period relative to how soon the balloon comes due, the larger the balloon will be as a percentage of the original loan — a 30-year amortization with a 5- or 7-year balloon typically leaves somewhere around 85% to 95% of the original principal still outstanding, since so little of the early payments in a long amortization goes toward principal. Use the calculator above with your specific numbers rather than relying on a rule of thumb.