The direct answer
Commercial refinance risk arises when an existing mortgage matures or requires a balloon payoff and replacement financing may be smaller, more expensive or unavailable. Model future NOI, value, loan-to-value, DSCR, debt yield, rates, fees and the amount of equity required to bridge any refinancing shortfall.
Quantify the balloon or payoff
Start with projected remaining principal at maturity, plus applicable fees and costs. An interest-only period can leave a larger balance than an amortizing schedule.
To apply the approach to an editable scenario, use the Commercial Real Estate Investment Calculator. For the neighboring question, explore Debt Yield Calculator.
Estimate lender proceeds under several constraints
Future debt capacity can be limited by LTV, DSCR, debt yield and lender requirements. The binding constraint may change between scenarios.
Stress rate, NOI and exit value together
Lower NOI, higher cap rates and higher financing rates can reduce refinancing proceeds simultaneously. Develop a cash-in, sale or extension contingency.
Worked example
If a $4 million balloon comes due but future underwriting supports only $3.5 million of replacement debt, the owner faces a $500,000 funding gap before refinancing costs. The gap must be resolved through equity, sale, negotiation or other financing.
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Common mistakes and limitations
Do not assume a loan can always be refinanced for the balloon amount; evaluate debt capacity at the expected maturity date.
Does not calculate commercial loan terms, taxes or future sale value unless supplied in an optional scenario mode.
Frequently asked questions
What causes a commercial refinance shortfall?
Lower income or value, higher rates, tighter underwriting or higher remaining loan balance can limit proceeds.
Is an extension always available?
No. Extensions depend on loan documents and lender consent.
Sources and further reading
The article’s examples are illustrative arithmetic. The references below provide context for operating, valuation or transaction concepts; they do not endorse the assumptions or the calculator.
- Office of the Comptroller of the Currency — Comptroller's Handbook — Commercial Real Estate LendingNOI, direct capitalization, cap-rate valuation and DCF concepts for commercial real estate.
- Appraisal Institute — Basic Formulas — Income CapitalizationIncome/cap-rate/value relationships, gross income multiplier and debt-coverage formula references.
Read our editorial policy for the scope of these educational methods.