Balloon Loan Calculator
Loans & MortgagesLow payments now, a lump sum later.
Loan, rate, amortization & balloon term
Enter a loan amount above zero to see your payment and balloon.
Advanced options
The balloon term is at or beyond the amortization term, so this is a fully-amortizing loan with no balloon.
Enter a loan amount above zero to see your payment and balloon.
Balloon vs. fully-amortizing loans
| Option | Monthly | Total interest | Balloon | Total cost |
|---|---|---|---|---|
| This balloon loan | $0 | $0 | — | $0 |
| Pay off in 1 (no balloon) | $0 | $0 | — | $0 |
| Carry to 1 (no balloon) | $0 | $0 | — | $0 |
The balloon's appeal is the low monthly payment; the cost is the lump sum still owed at maturity. Paying the same loan off over the balloon term avoids the balloon but raises the monthly payment.
Balloon-term scenarios
Your monthly payment stays $0 whatever the balloon term — only the size of the lump and the time before it lands change.
| Balloon term | Monthly | Balloon | % of loan | Risk |
|---|---|---|---|---|
| 1 years | $0 | $0 | 0% | Low |
Interest-rate scenarios
How the payment and the 1 years balloon move with the rate.
| Rate | Monthly | Balloon | Total interest | Risk |
|---|---|---|---|---|
| 0.10% | $0 | $0 | $0 | Low |
| 0.75% | $0 | $0 | $0 | Low |
| 1.50% | $0 | $0 | $0 | Low |
How this balloon loan is calculated
- 1Your $0 loan is amortized over 1 years, giving a monthly payment of $0.
- 2You make that $0 payment for 1 years — $0 in total.
- 3Those payments retire $0 of principal and cover $0 of interest.
- 4The balance not yet repaid — $0, or 0% of the loan — falls due as the balloon.
- 5All in, you repay $0, of which $0 is interest.
Amortization schedule
| Year | Principal | Interest | Ending balance | Cumulative interest |
|---|---|---|---|---|
| 1balloon due | $0 | $0 | $0 | $0 |
Payments run to the balloon year, when the remaining $0 balance is due in one lump sum in 1 years.
Formulas
| Metric | Formula | Your value |
|---|---|---|
| Monthly payment | P × i ÷ (1 − (1 + i)^−n); i = monthly rate, n = amortization months | $0 |
| Balloon payment | Balance remaining after the balloon-term payments | $0 |
| Principal retired | Loan amount − balloon payment | $0 |
| Total interest | Sum of the interest in every payment up to the balloon | $0 |
| Total repayment | Payments made + balloon (= loan + total interest) | $0 |
| Balloon vs. loan | Balloon payment ÷ loan amount | 0.0% |
Your inputs
| Input | What it means | Your value |
|---|---|---|
| Loan amount | The amount borrowed — the starting principal. | $0 |
| Interest rate | The nominal annual interest rate on the loan. | 0.00% |
| Amortization term | The schedule the monthly payment is sized on, e.g. 30 years. | 1 years |
| Balloon due in | When the remaining balance falls due as a single lump sum. | 1 years |
Know what this estimate is based on
- Jurisdiction
- General model; U.S.-specific rules are identified on the relevant tool
- Scope and limitations
- Educational estimate only. A lender may use different compounding, day-count, eligibility, tax, insurance, escrow, fee, or rounding rules.
- Source links checked
- Jul 30, 2026
Built and regression-tested by Smart Tools Lab. It has not been individually reviewed by a licensed financial, tax, or legal professional.
How to use
- 01
Enter the loan amount and interest rate — these, together with the amortization term, fix your monthly payment.
- 02
Open Advanced to set the amortization term (the schedule the payment is based on, often 30 years), the balloon term (when the lump sum is due, often 5–7 years), and any extra monthly principal.
- 03
Read your monthly payment, the balloon balance due at maturity, the total interest and the refinance risk — then compare terms, rates, a full amortization schedule, and save scenarios side by side.
Formula
Monthly payment = P × i ÷ (1 − (1 + i)^−n), where P is the loan amount, i is the monthly interest rate (annual rate ÷ 12) and n is the number of months in the amortization term. The balloon term is deliberately absent here — the payment is sized purely on the amortization schedule, so changing when the balloon is due never changes the payment. Balloon payment = the balance still owed once you have made payments for the balloon term. The balance after m months is P × (1 + i)^m − payment × ((1 + i)^m − 1) ÷ i. Principal retired by the balloon = loan amount − balloon payment. Total interest = the interest portion of every payment up to the balloon = (payments made + balloon) − loan amount. Total repayment = the monthly payments you make + the balloon payment.
Example
Take a 250,000 loan at 6.5% interest, amortized over 30 years with the balloon due in 7 years. The 30-year schedule sets a monthly payment of about 1,580 — the very same payment an ordinary 30-year loan would have. You make that payment for 7 years (84 payments), handing over roughly 132,734 in total. But because a 30-year loan barely touches principal in its early years, only about 23,959 of the balance has actually been repaid; the remaining 226,041 — close to 90% of what you borrowed — comes due as the balloon in year 7. Of everything paid before the balloon, about 108,775 was interest, so all-in you repay 358,775. The trade-off is cash flow: fully paying the loan off over the same 7 years would cost about 3,712 a month, so the balloon frees up roughly 2,132 a month now — in exchange for a six-figure lump sum you will have to refinance, sell, or repay when it lands.
Definitions
- Loan amount (principal)
- The sum you borrow at the start. Every payment, the balloon, and the total interest are all measured against it.
- Interest rate
- The nominal annual rate charged on the outstanding balance. Divided by twelve, it becomes the monthly rate used to size the payment and grow the balance between payments.
- Amortization term
- The length of the repayment schedule the monthly payment is calculated from — commonly 30 years. A longer amortization means a smaller payment but slower principal paydown, which makes the balloon larger.
- Balloon term
- How long until the entire remaining balance falls due in one lump sum — typically 3 to 7 years. It controls when, and how big, the balloon is, but it does not change the monthly payment.
- Monthly payment
- The level principal-and-interest amount you pay each month until the balloon date. It is identical to the payment on a fully-amortizing loan of the same amount, rate and amortization term.
- Balloon payment
- The remaining balance owed at the end of the balloon term, due all at once. On a long amortization with a short balloon term it can be most of the original loan.
- Refinance risk
- The chance that you cannot comfortably repay or refinance the balloon when it matures — higher when the balloon is a large share of the original loan, when rates may rise, or when your credit or the property's value may weaken.
- Extra monthly payment
- Optional principal paid on top of the scheduled payment. It goes straight to the balance, so it directly shrinks the balloon and the interest you pay before it.
Good to know
How a balloon loan actually works
A balloon loan runs on two separate clocks, and keeping them apart is the key to understanding everything else. The first clock is the amortization term — the long schedule, very often thirty years, that the lender uses to calculate your monthly payment. The second clock is the balloon term, the much shorter window, commonly three to seven years, after which the loan simply ends and whatever balance remains is due in a single lump sum. You make the same comfortable monthly payment the whole time, exactly as if you had taken an ordinary long loan, but you never reach the far end of that schedule. Instead, the loan stops early and hands you a bill for the unpaid balance. This is why the monthly payment on a balloon loan is identical to the payment on a fully-amortizing loan of the same amount, rate and amortization term: the payment is sized only by the long clock. The balloon term has no effect on the payment at all — it only decides the day the music stops and how much principal is still standing when it does. Once you see the structure as 'pay like a thirty-year loan, but settle up in year seven', the appeal and the danger both become obvious. The appeal is a small payment relative to the size of the loan. The danger is that the small payment was never going to retire the debt; it was only ever buying you time until a much larger reckoning.
Why the balloon balance is so large
The single most surprising thing about balloon loans is how little of the principal you have actually repaid when the balloon comes due. The reason lies in how amortization front-loads interest. Each month the lender charges interest on the entire outstanding balance first, and only what is left of your payment chips away at the principal. In the early years of a long schedule the balance is at its peak, so the interest slice is large and the principal slice is tiny. On a 250,000 loan at 6.5% amortized over thirty years, the first payment of about 1,580 contains roughly 1,354 of interest and only about 226 of principal. Multiply that slow start across seven years and you have repaid only around 24,000 — under ten percent of the loan — even though you have handed the lender well over 130,000. The remaining balance, about 226,041, is the balloon. That is close to ninety percent of the original loan returning as one payment. This is not a quirk of one example; it is the structural consequence of pairing a long amortization with a short balloon term. The longer the amortization relative to the balloon term, the more dramatically the interest dominates the early payments and the bigger the balloon becomes. Shortening the amortization or lengthening the balloon term both leave more principal repaid and a smaller lump at the end, which is exactly what the term-scenario table is designed to show. Until you have internalized this, a balloon loan's low payment can create a false sense of progress that the balance has barely begun.
The refinance gamble at maturity
Most balloon borrowers do not intend to write a six-figure check at maturity; they intend to refinance the balloon into a new loan, or to sell the asset and pay it off from the proceeds. That plan can work beautifully, but it rests on conditions that are outside your control and unknowable years in advance. To refinance, you generally need to still qualify: a solid credit profile, sufficient and stable income, and an asset that has held or grown in value. You also need acceptable interest rates to be available, because the new loan will be priced at whatever rates prevail on the day the balloon is due, not the rate you have today. If rates have risen, the refinanced payment can be substantially higher than the comfortable payment you have been making, undoing the original appeal. If the asset has fallen in value, you may not be able to borrow enough to cover the balloon, leaving a shortfall you must fund in cash. And if your own finances have weakened — a job change, a business downturn, a health event — you may not qualify at all. When several of these break against you at once, the balloon can force a rushed sale or a default. This is the genuine, distinct risk a balloon loan carries that an ordinary fully-amortizing loan does not, and it is why this calculator grades refinance risk by how much of the original loan is still owed at the balloon. The larger that share, the more completely your plan depends on a favorable future you cannot guarantee.
Reading your monthly-payment saving honestly
The reason anyone chooses a balloon loan is cash flow: the monthly payment is lower than it would be if you actually paid the loan off over the same short period. The comparison table makes the size of that saving concrete. In the running example, fully repaying the 250,000 over the seven-year balloon term would demand about 3,712 a month, while the balloon's payment is about 1,580 — a difference of roughly 2,132 every month. That is real money freed up for other uses, and for some borrowers it is the difference between a deal that works and one that does not. But the saving is not free, and reading it honestly means holding three numbers in view at once: the monthly payment, the total interest, and the balloon still owed. The low payment is borrowed time, not avoided cost; the principal you are not repaying now is simply waiting for you at the end, and you keep paying interest on that large balance the whole way. A useful discipline is to ask what you will do with the monthly saving. If it is invested, set aside toward the balloon, or genuinely needed to make an otherwise sound purchase viable, the trade can be rational. If it merely funds a lifestyle the full payment would not support, the balloon is quietly enabling a purchase you cannot actually afford, and the bill arrives all the same. The calculator deliberately shows the saving and the balloon side by side so the trade-off is never hidden behind a single attractive number.
Levers that shrink the balloon
You are not stuck with the balloon a default structure hands you; several inputs reshape it, and the calculator lets you see each one move the result. The most direct lever is extra principal. Because anything you pay above the scheduled amount goes straight to the balance, paying extra every month shrinks both the balloon and the interest you accrue before it. In the example, adding 500 a month cuts the balloon from about 226,041 to roughly 173,034 and trims the interest paid, while the contractual payment itself is unchanged — the extra simply rides on top. The second lever is the amortization term: a shorter schedule means a higher payment but faster principal paydown, so less is left at the balloon. The third is the balloon term itself: pushing the due date further out gives the slow paydown more time to work, leaving a smaller lump, while a very short balloon term leaves almost the entire loan outstanding. The term-scenario table holds the payment fixed and shows how the balloon falls as the term lengthens; the rate-scenario table shows how both the payment and the balloon respond to higher or lower interest rates. The most decisive lever of all is to set the balloon term equal to the amortization term, which removes the balloon entirely and turns the product into an ordinary fully-amortizing loan. Used together, these controls let you find a structure whose monthly payment you can sustain and whose balloon you can realistically handle, rather than discovering the mismatch only when the lump sum arrives.
Where balloon loans show up
Balloon structures are far more common in some corners of borrowing than others, and knowing where they appear helps you recognize one before you sign. They are a staple of commercial real estate, where a property might be financed on a long amortization but with the loan maturing in five, seven or ten years, on the expectation that the owner will refinance or sell within that window. They appear frequently in seller financing, where an individual selling a property or a business carries the note and wants their capital returned within a few years rather than waiting decades. Some land loans, construction loans and bridge loans are effectively balloons, designed to be replaced by permanent financing once a project is complete. In the consumer world they are less common than they once were — balloon home mortgages have become rare and are more tightly regulated since the financial crisis exposed how dangerous they can be for unprepared borrowers — but balloon auto loans and lease-style 'balloon' financing still exist, where a large final payment buys a lower monthly cost. Across all these settings the underlying mechanic is identical to the one this calculator models: a payment sized on a long schedule, a balance that comes due early. The contexts differ mainly in who tends to use them and why. A commercial investor refinancing on a planned timetable is using the structure as intended; a household lured by a low payment with no concrete plan for the balloon is using it as a trap. Spotting the balloon is the first step to telling which situation you are in.
Balloon loans versus other low-payment structures
A balloon loan is one of several ways to buy a lower monthly payment, and it helps to see how it differs from the alternatives. An interest-only loan goes further in the same direction: you pay only the interest for a period, so none of the principal is repaid and the eventual balance equals the entire original loan — effectively a balloon equal to the whole amount, though it usually then converts to a higher amortizing payment rather than demanding a single lump. A simple longer-term loan, such as stretching repayment over thirty years instead of fifteen, also lowers the payment, but it actually retires the debt by the end; you pay more total interest, yet you never face a lump sum. An adjustable-rate loan lowers the early payment by accepting that the rate, and therefore the payment, can rise later. The balloon's distinctive bargain is different from all of these: the payment is as low as a long loan's, but the loan ends early with most of the principal intact and due at once. Compared with an interest-only loan, a balloon at least repays a little principal along the way, so its lump is somewhat smaller than the full loan. Compared with a plain long-term loan, it trades the certainty of a slow, complete payoff for a lower commitment now and a large, uncertain obligation later. Knowing which structure you are actually being offered — and which risk you are accepting in exchange for the lower payment — is the difference between a deliberate choice and an unpleasant surprise.
Deciding whether a balloon fits you
The honest test for a balloon loan is whether you have a credible, specific exit before the balloon matures — and whether the deal still holds up if that exit is delayed. A balloon makes sense when you can point to a concrete source for the lump sum: a planned sale within the term, a refinance you are genuinely likely to qualify for, a maturing investment, a bonus or an inheritance, or a business event with a clear timeline. It also makes sense when the lower payment is doing real work, such as keeping a sound commercial deal cash-flow positive during a development phase. It is a poor fit when the plan is vague — 'I'll just refinance later' — because that bets your solvency on future rates, future credit, and future asset values all cooperating at once. A common and costly pitfall is to treat the low payment as the affordability test; qualifying for and comfortably making the monthly payment tells you nothing about whether you can handle the balloon, and the two can be wildly different. Use this calculator to pressure-test the structure before committing: read the balloon as a multiple of your monthly payment, check the refinance-risk grade, run the rate-scenario table to see what a higher rate at maturity would do to a refinanced payment, and try shortening the amortization or adding extra principal to see how much smaller and safer you can make the balloon. If, after stress-testing it, the balloon still relies on everything breaking your way, a fixed fully-amortizing loan — even at a higher payment today — is almost always the safer choice.
Frequently asked questions
What is a balloon loan?
A balloon loan keeps your monthly payment low by calculating it on a long amortization schedule — often 30 years — but it ends much sooner, typically after 3 to 7 years. At that point the entire remaining balance, the 'balloon', is due in a single lump sum. You enjoy a small payment for the term, then face one large payment that most borrowers cover by refinancing, selling, or repaying from savings.
Why is my monthly payment the same as a 30-year loan?
Because it is calculated exactly like one. The payment depends only on the loan amount, the interest rate and the amortization term — not on the balloon term. A 250,000 loan at 6.5% over a 30-year amortization is about 1,580 a month whether the balloon is due in 5 years, 7 years, or never. The balloon term only decides when you stop making that payment and how much balance is left to settle.
How large will my balloon payment be?
Larger than most people expect. Early payments on a long amortization are mostly interest, so the balance falls slowly at first. On a 250,000 loan at 6.5% over a 30-year amortization, after 7 years you have repaid only about 23,959 of principal — so the balloon is roughly 226,041, close to 90% of what you borrowed. A longer balloon term or a shorter amortization leaves a smaller balloon; the term-scenario table shows exactly how it moves.
What happens when the balloon comes due?
You have three honest options: refinance the balance into a new loan, sell the asset and pay the balloon from the proceeds, or repay it in cash from savings. Many balloon borrowers plan to refinance, but that is not guaranteed — it depends on your credit, your income, the asset's value, and the interest rates available at maturity. The 'refinance needed' figure here is simply the balloon balance you would have to cover.
Are balloon loans risky?
They carry a specific risk that fully-amortizing loans do not: a large payment you cannot make from ordinary income. If you cannot refinance or sell when the balloon matures — because rates rose, your finances changed, or the asset lost value — you can be forced into a fire sale or default. The calculator rates this risk from how much of the original loan is still owed as the balloon, so you can see at a glance how exposed a given structure leaves you.
How does a balloon loan compare with a regular loan?
A fully-amortizing loan over the same short term pays the whole balance off by maturity, with no lump sum — but at a much higher monthly payment (about 3,712 versus 1,580 in the example, paying the 250,000 off in 7 years). Carrying the same loan to its full 30-year amortization avoids a balloon too, but costs far more interest over time (around 318,861). The balloon sits in between: the lowest payment now, in exchange for a refinance or repayment event later. The comparison table lays all three side by side.
Can I shrink or avoid the balloon?
Yes. Paying extra principal each month reduces the balance faster, so the balloon — and the interest before it — both shrink; the calculator shows how much an extra amount saves. Choosing a shorter amortization term or a longer balloon term also leaves less owed at maturity. And if you set the balloon term equal to the amortization term, the loan simply pays itself off with no balloon at all.
When do balloon loans make sense?
They suit borrowers with a clear, near-term exit: you plan to sell or refinance before the balloon matures, you expect a lump sum (a bonus, a property sale, an inheritance) to cover it, or you are confident you will qualify to refinance on good terms. They are common in commercial real estate and in seller financing. They are a poor fit if you would rely on uncertain future refinancing or hope that rates and your finances both stay favorable — in that case a fixed fully-amortizing loan is usually safer.