Scenario tool · Acren Research

Commercial Mortgage Balloon Balance Calculator

Calculate the remaining balance at a commercial mortgage balloon date using your loan amount, rate, amortization and term.

Free to use. No email required. Public datasets retain their reporting dates; calculations use your assumptions. Prepared September 12, 2026. Open the tool or report ↓

Estimate scheduled principal at maturity

All starting inputs are illustrative, not market quotes or lender terms. Calculations run in your browser; this tool does not upload or save your entries or send entered financial values to analytics. Use figures from your own loan documents and operating statements.

Scheduled balance after the maturity-month payment

Remaining principal / balloon: $4,127,050
Regular monthly payment: $28,389.45
Principal repaid through term: $872,950
Scheduled interest through term: $2,533,784

The balloon is remaining principal after 120 regular monthly payments. If the final regular payment and balloon are due together, both must be funded. Fees, accrued irregular-period interest and lender payoff adjustments are excluded.

Balloon balance method and example

Commercial mortgages can mature before their amortization schedule ends. This tool assumes a fixed nominal annual interest rate divided by twelve, equal monthly payments in arrears, and no missed or extra payments. For principal P, monthly rate r and amortization n, payment equals P × r ÷ [1 − (1 + r)⁻ⁿ]. Remaining principal is the present value of the payments left after the loan term.

At zero interest, payment is principal divided by amortization months and the balance declines evenly. With interest-only payments for the entire term, the original principal remains due. Mixed interest-only/amortizing periods, variable rates and loan modifications need a document-specific schedule.

Example: a $100,000 loan at 6% with 360-month amortization has a monthly payment of $599.55. After 60 payments, approximately $93,054 of principal remains. At zero interest, a $120,000 loan amortizing over 120 months has a $60,000 balance after 60 payments. These examples are arithmetic illustrations, not loan offers.

Use the output as a research question

Compare the scheduled balance with a dated lender statement or payoff quote before using it in a refinance analysis. Recorded documents can show an original amount or stated maturity while missing later payments, extensions and modifications. A modeled balloon does not establish today’s debt, default, sale intent or eligibility for refinancing. The calculation does not include daily accrual conventions, payment rounding, taxes, reserves, late charges, prepayment penalties or additional borrowing.

Primary background: OCC Comptroller’s Handbook: Commercial Real Estate Lending (version 2.0, March 2022; verified September 12, 2026), discussing cash flow, debt service, collateral and refinance risk. The illustrative inputs and scenario increments here are ACREN educational assumptions, not OCC recommendations.

How Acren helps

Connect loan arithmetic to the recorded history

Use Acren to review available mortgage and recorded-document evidence for the property, then compare the documents with the loan amount, rate, amortization and term you enter here. The calculation helps frame your next document check.

Confirm modifications, interest-only periods and repayment activity in current documents. The calculated balance is an illustration, not a lender payoff statement.

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