Interest Rate Structuring

Fixed-Rate vs. Floating-Rate Commercial Real Estate Debt Financing

Choosing between fixed-rate and floating-rate commercial debt is one of the most critical structural decisions in commercial real estate. Fixed-rate loans eliminate interest rate volatility, locking in predictable debt service for 5 to 10+ years at the expense of heavy prepayment penalties. Floating-rate loans (pegged to 30-day CME Term SOFR) provide prepayment flexibility and lower closing friction, but expose borrowers to rate spikes and require costly interest rate caps.

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Indicative Underwriting Matrix

Benchmark Index Fixed: 5/7/10-Yr U.S. Treasury | Floating: 30-Day CME Term SOFR Floating rates adjust monthly based on Federal Reserve benchmark rates.

Prepayment Structure Fixed: Yield Maintenance or Defeasance | Floating: 1–2 Year Open Window (1% Exit Fee) Floating debt allows agile property sale or early refinancing.

Hedging Requirement Fixed: None (Rate Built In) | Floating: Mandatory Interest Rate Cap Lenders mandate rate cap escrows to protect against runaway SOFR hikes.

Ideal Hold Horizon Fixed: 5–10+ Years (Stabilized Core) | Floating: 1–3 Years (Transitional / Value-Add) Fixed matches long-term cash flow; floating matches rapid turnaround.

Cash Flow Predictability Fixed: 100% Fixed Monthly Payments | Floating: Fluctuates Monthly Floating debt requires cash flow contingency reserves.

Underwritten DSCR Stress Fixed: Underwritten at Note Rate | Floating: Underwritten at Strike Rate (+200–300 bps) Floating lenders stress test cash flow at rate cap ceiling.

Floating loans require escrowed reserves for interest rate cap replacement if the derivative contract expires prior to loan maturity.

Strategic Decision Framework: Matching Debt to Property Business Plan

Fixed-rate financing is optimal for stabilized commercial assets with credit tenants and predictable multi-year leases. By locking the note rate, the borrower shields property cash flow from macroeconomic interest rate shocks. However, if the sponsor intends to sell the building within 2 to 3 years, paying off a fixed loan early can trigger crippling yield maintenance or defeasance penalties.

Floating-rate debt is designed for opportunistic, value-add, or transitional assets. Because the sponsor intends to renovate, re-tenant, and sell or refinance the property within 18 to 36 months, the prepayment flexibility of floating debt outweighs its higher spread and interest rate cap expense.

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Frequently Answered Financing Questions

Verified answers to common borrower and broker inquiries regarding loan sizing, guidelines, and execution.

Underwriting Q&A

What is an interest rate cap on a floating-rate commercial loan?

An interest rate cap is a derivative financial contract purchased by the borrower that establishes a contractual ceiling (strike rate) on the benchmark index (such as SOFR).

If SOFR rises above the strike rate, the cap provider reimburses the borrower for the difference, ensuring the property’s debt service obligations remain manageable.

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Underwriting Q&A

When is a fixed-rate commercial mortgage better than a floating-rate loan?

A fixed-rate loan is superior when acquiring or refinancing a stabilized asset intended for a hold period of 5 years or longer, especially when Treasury yields are attractive.

Locking fixed debt eliminates interest rate risk, preserves cash-on-cash distributions, and avoids the continuous expense of purchasing interest rate cap renewals.

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