Defeasance in CMBS: How Borrowers Replace Collateral and Release Liens

What Defeasance Means in Commercial Mortgage-Backed Securities

Defeasance is the process by which a borrower in a CMBS loan replaces the original collateral pool with a portfolio of U.S. Treasury or agency securities. Once the substitute portfolio is delivered and the borrower satisfies all conditions, the lender releases its lien on the property. The loan is effectively satisfied early, freeing the asset from the mortgage backing and allowing the borrower to sell or refinance without the CMBS bondholder's interference.

The mechanism exists because CMBS loans are typically non-recourse. The borrower's only path to clear title before maturity is to provide the bondholders with cash-flowing assets that match or exceed the remaining debt service and collateral obligations of the pool.

How the Defeasance Process Works

The standard process follows a predictable sequence, though timing and documentation vary by loan and servicer.

• The borrower provides early notice to the servicer and bondholder, often 30 to 90 days before the intended release date.
• The servicer calculates the substitute collateral requirement based on the remaining debt service, expected prepayments, and a yield spread over U.S. Treasuries.
• The borrower deposits cash or Treasury securities into an escrow account administered by a qualified trustee.
• The substitute portfolio is delivered to the bondholder or its custodian, and the lien is released upon verification.

The borrower typically works with a defeasance broker, attorney, and accountant to model the yield, select securities, and coordinate delivery. The process is documented through a defeasance agreement that binds the borrower, servicer, trustee, and bondholder.

Costs and Financial Implications

Defeasance is rarely cheap. Borrowers should expect a combination of direct costs and economic trade-offs.

• Substitute collateral yield spread: The portfolio must earn a spread, often 50 to 150 basis points over the relevant Treasury rate, which can require more capital than the outstanding balance.
• Broker and administrative fees: Defeasance brokers, attorneys, and trustees charge fees that can range from several thousand to hundreds of thousands of dollars depending on loan size.
• Opportunity cost: Capital tied up in Treasuries is unavailable for other investments or deployments.

Whether defeasance is economical depends on the spread between prepayment penalties, the cost of the substitute portfolio, and the borrower's expected holding period or resale value of the property.

When Borrowers Choose Defeasance Over Other Options

Defeasance is most common in three situations.

• The borrower wants to sell the property and the buyer requires clear, unencumbered title.
• Interest rates have fallen significantly, making refinancing attractive, but the loan contains a substantial prepayment penalty.
• The property is performing well, and the borrower wishes to preserve capital by retiring the CMBS obligation early.

It is less attractive when the yield spread makes the substitute portfolio prohibitively large or when the borrower expects to hold the asset for a short period and can absorb a prepayment fee more cheaply.

Risks and Common Pitfalls

Defeasance is a structured transaction with specific requirements. Common pitfalls include inadequate yield spread modeling, late delivery of substitute collateral, and failing to account for expected prepayments or tax payments from the escrowed portfolio. A shortfall in the substitute collateral can delay the lien release or trigger default remedies.

Borrowers should also confirm whether the defeasance agreement allows for partial releases or requires full collateral substitution for the entire pool. Partial release provisions are less common in CMBS but can exist in certain loan structures.

Defeasance vs. Prepayment: A Quick Comparison

Bottom Line

Defeasance is the primary tool borrowers use to unwind CMBS obligations before maturity. It replaces the original collateral pool with government securities, releases the property lien, and allows the borrower to sell or refinance on clean terms. The process is transparent but expensive, and the decision hinges on yield spreads, prepayment penalties, and the borrower's broader capital strategy. Working with an experienced defeasance team and modeling multiple scenarios is essential before committing.