Balloon Loan Calculator

Enter the loan amount, annual interest rate, longer amortization period, and earlier balloon date to see the monthly payment, balloon principal due, interest, and balance path.

Estimate the payment and balloon due

Payments are sized to the longer amortization schedule. The unpaid principal is then due when the shorter balloon term ends.

Loan amountAnnual interest rate (%)Amortization periodBalloon due after

Fixed-rate monthly-payment estimate. Taxes, insurance, lender fees, late charges, and refinance costs are not included.

Balloon principal due after 7 years

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remaining principal due in addition to the scheduled payment

Scheduled monthly payment—

Balloon vs original amount—

Principal repaid before balloon—

Interest paid before balloon—

Scheduled payments before balloon—

Total cash through balloon date—

A balloon loan leaves a large balance due at maturity. Plan for cash, sale proceeds, or refinancing before that date.

Balance path to the balloonSee how slowly principal falls before the lump sum is due

Extra principal before the balloonTest how extra payments can shrink the final balance

Extra each monthOne-time extraOne-time payment month

Balloon after extras—

Balloon reduced by—

Interest saved before balloon—

Extra payments are modeled as principal-only payments after each scheduled monthly payment. Confirm your contract allows them and how your servicer applies them.

Amortization schedule & exportInspect principal, interest and balance month by month

Rows to preview

Month	Payment	Principal	Interest	Balance

Formula & assumptionsHow the scheduled payment and remaining balance are calculated

The scheduled payment is based on the longer amortization period. After the shorter balloon term's scheduled payments, the remaining principal becomes the balloon amount.

Payment = P × r ÷ (1 − (1 + r)^−N)
Balloon balance after k payments = P(1+r)^k − Payment × ((1+r)^k − 1) ÷ r

For a 0% rate, payment is principal ÷ amortization months and the balance falls linearly. This tool assumes monthly payments and a fixed nominal annual rate divided by 12.

How to use the Balloon Loan Calculator

Enter the amount borrowed, annual interest rate, longer amortization period, and earlier balloon due date. The calculator keeps the payment sized to the amortization period and estimates the principal still due when the balloon date arrives.

What the result means

The balloon balance is the remaining principal after the scheduled payments made before the balloon due date.