Calculate your balloon mortgage payment and the large lump sum due at maturity. See the balloon balance, amortization during the term, and total interest cost.
A balloon mortgage offers lower monthly payments by amortizing over a long period (typically 30 years) but requiring the entire remaining balance in a lump sum at a much shorter maturity — usually 5 or 7 years. This structure appeals to borrowers who plan to sell, refinance, or pay off the loan before the balloon comes due. Balloon mortgages are common in commercial real estate, land contracts, and seller-financed transactions where conventional lending may not be available.
The catch is obvious: the balloon payment can be hundreds of thousands of dollars. If you can't refinance or sell in time, you face a serious problem. Understanding exactly how large that final payment will be — and how much equity you'll have built — is essential before taking on this type of loan. Because early payments are overwhelmingly interest, the balloon balance is often 90% or more of the original loan amount.
This Balloon Mortgage Calculator shows your regular monthly payment, the balloon balance due at maturity, total interest paid during the term, and the equity built through amortization.
Balloon mortgages are common in commercial real estate, land purchases, and seller-financing arrangements. Before signing, you need to know the exact balloon amount and how it compares to your projected home value. This calculator makes that transparent, so you can plan your exit strategy — whether it's selling, refinancing, or saving to pay off the balance.
Monthly Payment = based on full amortization period (e.g., 30 years). Balloon Balance = remaining principal after N months of payments on the amortization schedule. Balloon Balance = P × [(1+r)^n − (1+r)^t] / [(1+r)^n − 1], where n = total amortization months, t = balloon term months.
Result: Monthly: $1,896 — Balloon due: $276,879
A $300,000 loan amortized over 30 years at 6.5 % produces a $1,896 monthly payment. After 7 years (84 payments), only $23,121 of principal has been repaid, leaving a balloon balance of $276,879 due in full. Total interest during the 7-year term is $136,213.
The key feature of a balloon mortgage is the disconnect between the amortization schedule and the loan term. Payments are calculated as if you'll pay over 30 years, keeping them low. But at the end of the balloon term (5, 7, or 10 years), whatever principal remains must be paid in full.
The reward is lower monthly payments and potentially a lower interest rate during the balloon period. The risk is that you may not be able to refinance at maturity — due to higher rates, lower home value, or changes in your financial situation. This makes balloon mortgages fundamentally different from standard fixed-rate loans.
The most common exit strategies are selling the property before the balloon comes due, refinancing into a conventional mortgage, or paying off the balance with savings or other assets. Real estate investors often plan to sell or 1031-exchange before maturity. Homeowners typically refinance 6–12 months before the balloon date.
A balloon mortgage has regular monthly payments based on a long amortization schedule (e.g., 30 years), but the entire remaining balance comes due as a lump sum at a much shorter maturity — typically 5 or 7 years. You must pay off, refinance, or sell before that date.
Because most of the early payments go to interest, the balloon is nearly as large as the original loan. On a $300,000 loan with a 7-year balloon amortized over 30 years, the balloon is roughly $277,000 — over 92 % of the original balance.
Commercial real estate investors, land buyers, people in seller-financing arrangements, and borrowers who plan to sell within a few years. The lower monthly payments free up cash flow in the short term, but require a clear exit plan.
If you cannot pay the balloon or refinance, the lender can foreclose. Some loans include a conditional right to modify or extend, but this is not guaranteed. Always have a backup plan before the balloon matures.
Often yes, because some balloon mortgages carry a slightly lower rate than comparable fixed-rate loans. The payment is also based on a full 30-year amortization, keeping it manageable. But you never actually pay for 30 years — the balloon terminates the loan early.
Yes, any extra principal payments reduce the remaining balance and therefore reduce the balloon. If you can consistently pay extra, the balloon at maturity will be smaller. Check that your loan has no prepayment penalty before doing this.