Free balloon mortgage calculator
Calculate your balloon mortgage payment and final balloon lump-sum due — enter loan amount, rate, amortization period, and balloon date, updated live, as you type.
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Balloon payments carry refinancing risk. If you can't refinance or pay the balloon, you may lose the property. Consult a licensed lender before choosing this product.
Results are estimates. Consult a professional.
How the balloon mortgage calculator works
A balloon mortgage uses a longer amortization period (typically 30 years) to calculate the monthly payment, but the entire remaining balance becomes due as a lump sum at a shorter maturity date — often 5, 7, or 10 years. The monthly payments are lower than a fully amortizing loan, but the balloon balance at maturity is far larger than typical equity would support without refinancing or selling.
Because payments are based on 30-year amortization, very little principal is repaid in early years. At 7% on a 30-year schedule, only about 8.7% of the original balance is paid off after 7 years. This means the balloon due at year 7 is roughly 91% of the original loan — borrowers must be prepared to refinance, sell, or pay the lump sum.
CFPB — What is a balloon payment? When is one allowed on a mortgage?Worked example: $300,000 loan, balloon at year 7
Borrower takes a $300,000 balloon mortgage at 7.0% APR. Monthly payments are calculated on a 30-year schedule, but the full remaining balance is due at the end of year 7 (month 84).
Balloon balance remaining after 5, 7, and 10 years at 7%
All examples use a 30-year amortization schedule at 7.0% APR. The monthly payment is the same regardless of when the balloon is due — only the remaining balance at that date changes.
| Loan Amount | Monthly Payment | Balloon at 5yr | Balloon at 7yr | Balloon at 10yr |
|---|---|---|---|---|
| $200,000 | $1,331 | $188,600 | $182,700 | $171,700 |
| $300,000 | $1,996 | $282,900 | $274,100 | $257,500 |
| $400,000 | $2,661 | $377,200 | $365,400 | $343,400 |
Source: CFPB balloon mortgage explainer; standard amortization at 7.0% APR.
Tips for borrowers considering a balloon mortgage
Balloon mortgages can offer lower initial rates but carry significant maturity risk. These five considerations help you assess whether the trade-off is appropriate for your situation.
- Have a clear exit strategy — You must either refinance, sell, or pay the balloon. Document your plan before closing. A refinance in a rising-rate environment may be far more expensive than today's rate.
- Check for a reset option — Some balloon loans include a conditional reset clause that converts to a fixed rate at balloon maturity. Confirm eligibility requirements (LTV, payment history, occupancy) in your loan documents.
- Understand the refinance risk — If your credit deteriorates or property values fall before the balloon date, you may not qualify for a new loan. Build a cushion — don't rely on a future refinance as your only option.
- Compare total cost carefully — The lower monthly payment can feel attractive, but you pay significant interest with minimal principal reduction. Run the numbers against a standard 30-year or 15-year loan for the same period.
- Know the regulatory landscape — Most balloon mortgages do not qualify as Qualified Mortgages (QM) under the Dodd-Frank Act, which means fewer consumer protections apply. Read all disclosures carefully before signing.
Accuracy and limitations
This calculator assumes a fixed interest rate, standard monthly compounding, and a 30-year amortization schedule for payment calculation. It does not account for taxes, insurance, PMI, prepayment, or rate changes. Actual balloon amounts from your lender may differ slightly due to rounding conventions or specific loan terms. This tool is designed for estimation — use your loan's actual amortization schedule for exact figures.
Not financial advice — consult a mortgage professional for your specific situation.
Balloon mortgage terms defined
About this balloon mortgage calculator
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