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Partially Amortized Loan Calculator.
Estimate periodic payment and balloon balance for a partially amortized loan.
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FAQs
How does the partially amortized loan calculator work?
Enter the requested values to receive a deterministic result. No live market, tax, or jurisdiction data is inferred.
Use Cases
Estimate payments for a balloon loan
Use this calculator to determine the regular payment amount and the balloon balance for a loan with a shorter term than its amortization schedule.
Example: A $200,000 loan at 5% interest with a 30-year amortization and a 5-year term.
Plan for a future balloon payment
Understand how much you will owe at the end of the loan term, helping you prepare for refinancing or a lump-sum payment.
Example: Calculate the balloon balance for a 10-year term on a 20-year amortization.
Frequently Asked Questions
- What is a partially amortized loan?
- A partially amortized loan has a loan term shorter than its amortization period. Payments are based on the longer amortization schedule, so at the end of the term, a large balloon payment is due to cover the remaining principal.
- How is the balloon balance calculated?
- The balloon balance is the remaining principal after making scheduled payments for the loan term. It is calculated using the amortization period to determine the payment amount, then applying that payment over the loan term to find the outstanding balance.
- What is the difference between loan term and amortization period?
- The loan term is the duration of the loan agreement, after which the balloon payment is due. The amortization period is the length of time over which payments would fully repay the loan if extended. In a partially amortized loan, the term is shorter than the amortization period.
Tips & Common Mistakes
Tips
- Ensure the loan term is shorter than the amortization period; otherwise, the balloon balance will be zero.
- Use the annual interest rate as a percentage, not a decimal. For example, enter 5 for 5%.
- The amortization period determines the payment amount, while the loan term determines how many payments you make before the balloon is due.
- Check your results by verifying that the balloon balance equals the remaining principal after the last scheduled payment.
Common Mistakes to Avoid
- Entering the loan term longer than the amortization period, which would result in a fully amortized loan, not a balloon payment.
- Using the loan term instead of the amortization period to calculate the payment amount, leading to an incorrect payment and balloon balance.
- Forgetting to convert the annual interest rate to a monthly rate in manual calculations, but this calculator handles it automatically.
Last updated: August 13, 2026