Yield Maintenance

Yield maintenance is a prepayment covenant common in fixed-rate commercial mortgages that requires a borrower to pay a predetermined fee designed to make the lender whole for lost interest income. The calculation typically uses the present value of remaining scheduled payments discounted at a specified Treasury or Treasury-equivalent rate plus a spread, which reflects the lender’s opportunity cost. Yield maintenance formulas quantify the economic loss from early payoff so the lender receives the same yield as if the borrower had continued making scheduled payments to maturity.

In loan selection and exit planning, underwrite the potential payoff scenarios to include yield maintenance where applicable, and model how market Treasury yields will affect the payoff amount. When negotiating loan terms, sponsors should request the exact formula, the Treasury tenor used for discounting, and any look-back period or spread since small differences materially change payoff. For secondary market or CMBS borrowers, expect precise, cash-based calculations that require coordination with counsel, trustees, and servicers to determine the true cost of refinancing before committing to a new loan.

Yield maintenance is important because it materially affects refinancing flexibility and the economics of early loan payoff. High yield maintenance charges can make refinancing uneconomic even when lower market rates are available, locking borrowers into higher-cost debt and influencing hold-versus-sell decisions. Lenders use yield maintenance to protect contracted yields while investors price risk accordingly. For sponsors and brokers, understanding the timing and magnitude of yield maintenance is essential to forecast exit strategies, negotiate release provisions, and plan capital stacks without unexpected payoff shocks.