Estimate balloon mortgage risk
This calculator models principal and interest only. It does not include taxes, insurance, PMI, escrow changes, income qualification, rate-lock availability, prepayment penalties, or lender-specific balloon note terms.
| Line item | Balloon mortgage | Fully amortizing comparison | What to watch |
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Methodology notes
Payment
The monthly payment is calculated as a standard amortizing principal-and-interest payment over the selected amortization term.
Balloon balance
The balance due is the remaining principal after scheduled payments through the balloon month.
Refinance risk
The cash need compares the balloon payoff plus estimated costs with a new loan capped by the entered refinance LTV.
The recommendation is a planning signal, not loan advice. A lender may qualify the borrower using a different rate, payment, asset reserve, appraisal, or balloon payoff rule.
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Balloon mortgage FAQ
Is a balloon mortgage cheaper?
The payment can be lower if the loan amortizes over a long schedule, but the remaining balance still has to be paid, sold, or refinanced.
What if home value falls?
A lower appraisal can push the refinance LTV above lender limits, creating a cash gap or forcing a sale.
Should I include sale costs?
Yes. Agent commissions, transfer taxes, credits, repairs, and concessions reduce net equity available to pay the balloon balance.