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🎈 Partially Amortized Loan Calculator

Figure out your monthly payment and the balloon payment due on a partially amortized (balloon) loan.

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What is a partially amortized loan?

A partially amortized loan (often called a balloon loan) calculates your regular monthly payment as if it were spread over a long amortization schedule, such as 30 years. But the loan actually comes due much sooner than that, so at the end of the shorter term you owe the remaining balance in one lump sum, called the balloon payment.

How this calculator works

The calculator first finds your monthly payment using the full amortization schedule you entered. It then simulates the loan balance declining over your actual loan term and reports what’s left owing at the end of that term, along with how much interest and principal you paid along the way.

This is a general planning estimate for educational purposes. Always confirm exact terms, fees, and the balloon due date with your lender before relying on this for a real transaction.

Last reviewed August 2026