Commercial Loan Prepayment Penalties: Step-Down, YM & Defeasance
Commercial real estate mortgages are designed as long-term fixed investments for institutional capital providers. To protect lenders and bond investors from losing anticipated interest yield when interest rates decline, commercial loan documents include strict prepayment penalty structures. The three universal prepayment mechanisms are Step-Down penalties, Yield Maintenance, and Defeasance.
Indicative Underwriting Matrix
Prepayment calculations require precise discount rate modeling. CMBS defeasance incurs significant third-party accounting and legal expenses.
Comparing the Three Universal Prepayment Structures
Commercial lenders enforce three distinct exit penalty methodologies:
1. Step-Down Penalty: The simplest structure, common in commercial bank loans. A 5-year loan might feature a "5-4-3-2-1%" schedule, meaning paying off the loan in Year 1 costs 5% of the principal balance, Year 2 costs 4%, scaling down to 1% in Year 5.
2. Yield Maintenance: Standard in agency multifamily and life insurance debt. If market interest rates decline below the mortgage note rate, the borrower pays the discounted present value of all remaining interest the lender would have collected through maturity, reinvested at current Treasury yields.
3. Defeasance: Mandatory in CMBS securitizations. Rather than prepaying the debt, the borrower purchases a customized portfolio of U.S. Treasury bonds that exactly match the remaining monthly debt service payments through maturity, substituting the bonds as collateral and releasing the real estate lien.
Prepayment Behavior in High vs. Low Interest Rate Cycles
A surprising nuance of Yield Maintenance occurs when market interest rates rise. Because the yield maintenance formula calculates the spread between the note rate and replacement Treasury yields, if prevailing Treasury yields are higher than the note rate, the calculated yield maintenance penalty drops to zero (or the contractual 1% minimum floor).
In contrast, step-down penalties are fixed contractual percentages that apply regardless of market interest rate movements.
Frequently Answered Financing Questions
Verified answers to common borrower and broker inquiries regarding loan sizing, guidelines, and execution.
Which is cheaper to exit: a step-down prepayment penalty or yield maintenance?
When market interest rates have dropped significantly, a step-down penalty is vastly cheaper; when market rates have risen, yield maintenance is often cheaper due to the 1% floor.
Yield maintenance becomes punitive in falling rate environments because the borrower must fund the entire yield shortfall against low Treasury rates.
Submit Financing Scenario →What is an open prepayment window in a commercial mortgage?
An open prepayment window is a contractual period (typically the final 3 to 6 months before maturity) where the borrower can pay off the loan with zero prepayment penalty.
Borrowers strategically time property sales or refinances to coincide with the open window, avoiding tens of thousands of dollars in exit penalties.
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