Balloon Mortgage Calculator
Balloon payment due at the end of a short-term mortgage
Calculate balloon mortgage payment due. See monthly payment, total paid before balloon, and final lump sum. Enter loan amount to size affordability.
What this tool does
This calculator models a mortgage structure where a large lump-sum payment (balloon payment) comes due after a shorter loan term. You enter the loan amount, interest rate, full amortization period, and the year when the balloon is due. The tool calculates your monthly payment, total amount paid in regular instalments before the balloon due date, and the balloon payment itself—the remaining balance owed at that point. The balloon amount is the primary driver of total cost; it depends heavily on the loan size, interest rate, and how many years elapse before it's due. This structure appears in commercial property financing and some residential refinancing situations where borrowers expect to refinance or sell before the balloon matures. The calculator assumes consistent monthly payments and does not account for rate changes, early repayment, refinancing outcomes, or fees. Results are estimates for illustration only.
Quick answer: with the default values, the result is $364,589.66 (Balloon Payment Due). Adjust the values below for your own figures.
Enter Values
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Formula Used
Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
How a Balloon Mortgage Differs
A balloon mortgage amortizes as if over a long period (often 30 years) but actually matures in a much shorter term (5, 7, or 10 years). Monthly payments are low because they follow the 30-year schedule, but a large lump sum — the balloon — is due when the shorter term ends.
When Balloon Mortgages Make Sense
Balloon mortgages suit borrowers expecting a lump sum (property sale, bonus, inheritance) timed with the balloon date. They are risky if refinancing fails or rates spike. Commercial real estate uses them extensively; residential use has declined since 2008.
Quick example
With loan amount of 400,000 and interest rate of 7 (plus amortization period of 30 and balloon due in of 7), the result is 364,589.66.
Which inputs matter most
You enter Loan Amount, Interest Rate, Amortization Period, and Balloon Due In.
What's happening under the hood
Computes monthly payment as if amortized over the full amortization period, then simulates balance reduction month-by-month until the balloon year. The remaining balance at that point is the balloon payment. Results are estimates for illustration purposes only.
What the headline rate hides
Lenders quote a rate; what you pay is a blend of that rate, fees, insurance, and any early-repayment penalty built into the product. The figure here isolates the core interest cost so you can compare like-for-like across deals; fees, insurance, and other costs sit on top of that base.
Balloon mortgage estimate indicates $364,589.66 lump sum due at balloon date.
Inputs
| Monthly Payment | $2,661.21 |
|---|---|
| Total Before Balloon | $223,541.64 |
| Total Paid (with balloon) | $588,131.29 |
| Balloon Due In | 7 yrs |
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator computes the balloon payment amount due at the end of a balloon mortgage term. It first derives the fixed monthly payment by treating the loan as if fully amortized over the stated amortization period, applying the monthly interest rate to the principal. It then models the loan balance month-by-month, reducing it by each payment while accruing interest, until it reaches the balloon maturity date. The remaining balance at that point represents the balloon payment. The calculator assumes a constant interest rate throughout the term, regular monthly payments with no skipped or extra payments, and no fees, insurance, or prepayment charges. It does not account for changes in interest rates, the impact of early repayment, tax effects, or affordability constraints. Results are estimates for illustration purposes only.
References
Frequently Asked Questions
Why would anyone take a balloon mortgage?
What happens if I can't pay the balloon?
Can I pay extra to reduce the balloon?
How does the balloon term differ from the amortization period in this calculator?
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