Definition
A prepayment penalty is a fee charged when a borrower pays off a loan before its scheduled maturity. Lenders use prepayment penalties to protect expected interest income and compensate for reinvestment risk (the risk that the lender must reinvest the returned principal at a lower rate).
Why Lenders Charge Prepayment Penalties
- Protect interest income: the lender priced the loan assuming it would remain outstanding for a set term.
- Reduce refinance churn: discourages borrowers from refinancing immediately after rates fall.
- Match investor expectations: many loans are sold into bond-like structures where cash flows matter.
- Price certainty: allows lenders to offer lower rates in exchange for limited flexibility.
Common Prepayment Structures
1) Step-Down Penalty
A declining percentage of outstanding principal if paid off within a certain period (common in bank and agency loans).
- Example: 5-4-3-2-1 over five years (5% in year 1, then 4%, etc.).
- Investor takeaway: easier to model; usually cheaper than yield maintenance/defeasance if you exit late in the penalty window.
2) Yield Maintenance
A formula intended to make the lender “whole†for lost interest by comparing the loan rate to a reference rate (often a Treasury rate) for the remaining term.
- When it hurts most: when market rates fall below the note rate (the make-whole amount increases).
- Investor takeaway: can be expensive and unpredictable; treat as a material exit friction.
3) Defeasance
Common in CMBS loans. Instead of paying off the loan directly, the borrower substitutes a portfolio of government securities that replicates the loan’s remaining payments.
- Costs include: securities purchase spread + legal/servicer fees + transaction complexity.
- Investor takeaway: typically operationally heavier than yield maintenance; timing and execution matter.
4) Lockout Period
A period during which prepayment is not allowed at all (or only allowed under specific circumstances).
- Investor takeaway: hard constraint—your model should not assume a refinance or sale payoff inside the lockout unless permitted.
Why It Matters to Investors
Prepayment penalties directly affect sale and refinance flexibility. They can reduce net sale proceeds, change the optimal hold period, and influence whether a refinance is worth it. For value-add deals, a large penalty can block a “refi-and-return-capital†strategy even if NOI improves quickly.
Underwriting Checklist
- Penalty type: step-down vs yield maintenance vs defeasance vs lockout.
- Penalty window: years and any open/prepay periods near maturity.
- Assumability: can a buyer assume the loan (sometimes avoiding payoff and penalty)?
- Release clauses: partial release for outparcels or condo sell-down (if applicable).
- Refi timing: align business plan with when penalty declines or expires.
Example
A borrower plans to sell an asset in year 3. The loan has a 5-4-3-2-1 step-down prepayment penalty. If the outstanding balance at sale is $10,000,000, the penalty in year 3 is:
- Penalty = 3% × $10,000,000 = $300,000
That $300,000 reduces net sale proceeds and can materially change equity returns if the deal has thin margins.
Common Pitfalls
- Ignoring the penalty in exit math: especially painful in short hold strategies.
- Assuming you can “just refinanceâ€: penalties can make refinancing uneconomic even when rates drop.
- Underestimating defeasance friction: timing, third-party fees, and complexity can surprise investors.
- Misreading open periods: some loans allow limited prepay windows; missing them can be costly.