About

A balloon loan defers a large portion of the principal to a single lump-sum payment at maturity. The borrower pays reduced monthly installments computed on a partial amortization basis, then owes the remaining balance - the BV (balloon value) - in full on the final due date. Miscalculating the monthly payment or underestimating the balloon obligation leads to refinancing risk, cash-flow shortfalls, or outright default. This calculator applies the present-value-adjusted annuity formula to derive exact monthly payments, total interest cost, and a complete month-by-month amortization schedule. It assumes fixed-rate terms with end-of-period payments and no prepayment penalties.

Balloon structures appear in commercial real estate, auto financing, and bridge loans where the borrower expects asset sale or refinancing before maturity. The tool approximates standard U.S. amortization conventions. It does not account for variable rates, payment holidays, or compounding frequencies other than monthly. Pro tip: if the balloon exceeds 50% of the original principal, scrutinize your exit strategy - lenders may decline refinancing if collateral value drops.

Formulas

The monthly payment for a balloon loan is derived by subtracting the present value of the balloon amount from the loan principal, then computing a standard annuity payment on the remainder.

PMT = (PV − BV(1 + r)ⁿ) ⋅ r1 − (1 + r)⁻ⁿ

Where PMT = monthly payment, PV = loan principal (present value), BV = balloon payment amount at maturity, r = monthly interest rate (APR ÷ 12 ÷ 100), and n = total number of monthly payments (term in months).

The balloon value is computed as a percentage of the original principal:

BV = PV × B_%100

Where B_% = balloon percentage of original loan amount.

Total interest paid over the life of the loan:

I_total = (PMT × n) + BV − PV

Each month, interest accrued is I_k = Balance_k−1 × r, and the principal portion is P_k = PMT − I_k. The remaining balance decreases until the final month, when the borrower pays BV to retire the loan.

Reference Data

Loan Type	Typical Term	Balloon %	Common Use	Risk Level
Commercial Mortgage	5 - 7 yr	50 - 70%	Office, Retail Property	Medium - High
Residential Balloon Mortgage	5 - 7 yr	40 - 60%	Short-term Homeownership	Medium
Auto Balloon Loan	3 - 5 yr	20 - 40%	Vehicle Financing	Low - Medium
Bridge Loan	6 - 24 mo	80 - 100%	Property Transition	High
Construction Loan	12 - 18 mo	90 - 100%	New Build Financing	High
SBA 7(a) Balloon	5 - 10 yr	30 - 50%	Small Business	Medium
Equipment Financing	3 - 7 yr	10 - 30%	Machinery, Fleet	Low
Land Contract	3 - 5 yr	60 - 80%	Raw Land Purchase	High
Interest-Only + Balloon	1 - 5 yr	100%	Investment Property	Very High
Seller-Financed Note	3 - 10 yr	40 - 70%	Private Real Estate	Medium
Farm/Agricultural Loan	5 - 15 yr	20 - 40%	Farmland, Livestock	Medium
Jumbo Balloon Mortgage	7 - 10 yr	50 - 65%	High-Value Residential	Medium - High

Frequently Asked Questions

A fully amortized loan reduces the balance to zero through equal periodic payments. A balloon loan only partially amortizes: monthly payments cover interest and a fraction of principal, leaving a large residual balance (the balloon) due at maturity. This results in lower monthly payments but requires the borrower to have an exit strategy for the lump sum.

The borrower must refinance the remaining balance into a new loan, negotiate an extension with the lender, or sell the underlying asset. Failure to do any of these results in default. Refinancing risk is significant if property values decline or interest rates rise between origination and maturity.

Yes. A higher balloon percentage means less principal is amortized during the loan term, so you carry a larger balance longer, accruing more interest overall. However, monthly payments decrease. For example, a 50% balloon on a 200,000 $ loan at 6% over 5 years yields substantially higher total interest than a 20% balloon under identical terms.

This depends on the loan agreement. Most balloon notes allow prepayment without penalty, which reduces the outstanding balance and therefore the balloon amount at maturity. However, some contracts include prepayment penalties or fix the balloon amount regardless of extra payments. Always verify the note terms.

Set the balloon percentage to 100%. The formula then computes monthly payments as pure interest (PV × r), and the entire principal is due as the balloon at maturity. The amortization schedule will show zero principal reduction each month.

Commercial balloon mortgages commonly use balloon percentages between 50% and 70% of the original loan amount, with terms of 5 to 7 years amortized on a 15 to 25 year schedule. The mismatch between the short term and long amortization period creates the balloon obligation.

No. This calculator assumes a fixed annual percentage rate for the entire loan term. For adjustable-rate balloon loans, you would need to recalculate at each rate adjustment period. The results here serve as a baseline assuming the initial rate holds constant.