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Free balloon mortgage calculator to calculate monthly payments, balloon payment amount, and refinancing requirements. Compare with traditional mortgages for your home financing decisions.
Last updated: February 2, 2026
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A large balloon payment will be due at the end of the balloon term. You must refinance or pay the full amount.
Balloon payment calculation
Remaining Principal Balance
Calculates the large payment due at the end of the balloon term
Monthly payment calculation
Lower Monthly Payments
Shows reduced monthly payments during the balloon term
Refinancing analysis
Refinancing Required
Determines when and how much refinancing will be needed
Comparison analysis
Side-by-Side Comparison
Shows monthly payment differences and total cost comparisons
Amortization schedule
Payment Breakdown
Shows principal and interest breakdown for each payment
Risk assessment
Risk Analysis
Evaluates refinancing, balloon, and interest rate risks
For a $300,000 loan at 4.5% interest with a 5-year balloon term:
Monthly Payment
$1,520.06
Balloon Payment
$271,126.18
Our balloon mortgage calculator uses standard loan amortization formulas to calculate monthly payments, balloon payment amounts, and refinancing requirements. The calculation considersmortgage financing principles to help you understand the true cost and risks of balloon mortgages.
Monthly Payment = P × [r(1+r)^n] / [(1+r)^n - 1]Balloon Payment = Remaining Principal BalanceTotal Cost = Monthly Payments + Balloon PaymentRefinancing Required at Balloon Term EndBalloon mortgages use standard amortization formulas but require a large payment at the end of the term. The monthly payments are calculated as if the loan were for the full term, but only the balloon period is paid.
Shows the payment structure and balloon payment timing
Balloon mortgage calculations use the same PMT (Payment) formula as traditional mortgages, but with a key difference: the remaining balance becomes due as a balloon payment. The monthly payment is calculated based on the full loan term, but only the balloon period is actually paid before the large payment is due.
Need help with other mortgage planning? Check out our mortgage recast calculator and borrowing power calculator.
Get Custom Calculator for Your PlatformResult: Monthly Payment = $2,147.29, Balloon Payment = $355,847.23
Total payments over 7 years: $180,252.36 + $355,847.23 = $536,099.59
$300,000 at 4.5% for 5 years
Monthly: $1,520.06, Balloon: $271,126.18
$500,000 at 4.0% for 10 years
Monthly: $2,387.08, Balloon: $386,512.15
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