Real estate and lending math

Balloon Payment Calculator

Estimate a regular amortizing payment and the remaining scheduled balloon balance at an entered balloon date.

Enter your assumptions

Result

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Formula and method

First calculate the level monthly payment over the full amortization term. The scheduled balance after k payments is P(1 + r)k − payment × ((1 + r)k − 1) ÷ r. At a zero rate, payment = P ÷ n and balance = P − k × payment.

Worked example

For $100,000 at 6%, amortized over 30 years with a balloon after 5 years, the regular monthly payment is about $599.55 and the scheduled balance after 60 payments is about $93,054.36.

Limitations

This estimates a contractual amortization schedule from entered assumptions. It excludes fees, points, escrow, irregular payments, prepayments, rate changes, late charges, and lender-specific payoff figures.

Outputs are deterministic arithmetic estimates, not lending, legal, tax, accounting, appraisal, or investment advice. Verify definitions and contractual figures with the relevant qualified professional or lender.

Frequently asked questions

Does this calculator retrieve lender or property data?

No. It uses only the values you enter and makes no live API request.

Are the results a financing offer or approval?

No. Results are educational estimates and do not represent underwriting, approval, rates, terms, or availability.

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