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Yield maintenance is a prepayment penalty on commercial real estate loans that compensates the lender for the interest income lost when a borrower pays off a loan early. It works by requiring the borrower to pay the difference between the loan's interest rate and the current reinvestment rate, applied to the remaining loan balance and discounted to present value. The goal is to make the lender financially indifferent to whether you prepay or continue making scheduled payments.
Think of yield maintenance like a breakup fee in a contract: you can leave early, but you have to compensate the other party for what they expected to earn.
The calculation compares two numbers: what the lender would earn if you keep the loan versus what they can earn by reinvesting the prepaid principal in U.S. Treasury securities of comparable maturity. The penalty equals the present value of the difference between those two earnings streams.
If your loan carries a 6% interest rate and current Treasuries of matching maturity yield 3%, the lender loses 3% per year on the remaining balance. The yield maintenance payment captures that full loss, discounted to today's dollars. As market rates rise toward your loan rate, the penalty shrinks. If market rates exceed your loan rate, yield maintenance penalties can approach zero.
Three common prepayment structures appear in commercial real estate loans. Yield maintenance requires a cash payment calculated as above. Defeasance replaces the loan with a portfolio of government securities that generate the same cash flows as the original loan, substituting the collateral without actually paying off the debt. Step-down prepayment charges a fixed percentage that decreases over time, such as 5% in year one, 4% in year two, and so on, regardless of market rate movements.
Yield maintenance is the most lender-protective structure in low-rate environments because the penalty exactly compensates for lost yield. Step-down penalties may cost the borrower less in total if rates have fallen sharply.
| Structure | How Cost Is Determined | Rate Risk to Borrower |
|---|---|---|
| Yield maintenance | Present value of interest rate differential vs. Treasuries | High when rates are low; low when rates are high |
| Defeasance | Cost of substitute government securities portfolio | Depends on Treasury pricing at prepayment date |
| Step-down prepayment | Fixed declining percentage of loan balance | Predictable; not market-rate-dependent |
Commercial mortgage-backed securities loans, referred to as CMBS loans, almost universally use yield maintenance or defeasance because the loans are pooled into trusts where investors expect a specific stream of income. Allowing borrowers to prepay freely would disrupt the expected cash flows to CMBS investors, which is why these loans lock in yields so aggressively.
Life insurance company loans and certain bank permanent loans also frequently include yield maintenance terms. Portfolio lenders with more flexibility sometimes offer softer prepayment structures in exchange for slightly higher rates.
Loans with yield maintenance penalties typically carry lower interest rates than loans with softer or no prepayment terms. Lenders accepting higher prepayment risk price that risk into the rate. Borrowers who expect to hold a property to maturity and never need to refinance should rationally accept yield maintenance in exchange for a lower rate. Borrowers who anticipate a sale or refinance within the loan term should model the potential prepayment cost carefully before accepting these terms.
Sources:
https://www.cmbs.org/
https://www.federalreserve.gov/releases/g19/
https://www.sec.gov/cgi-bin/browse-edgar
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