Yield Maintenance

How yield maintenance works

When a lender writes a ten-year fixed-rate loan, it is planning on ten years of interest. Yield maintenance protects that plan. The calculation runs roughly like this:

1. Take every remaining scheduled payment through maturity
2. Discount them back to today using the yield on a Treasury of matching remaining term
3. Subtract your outstanding principal balance
4. The difference is the penalty — usually with a floor of 1% of the balance

The mechanism means the penalty moves inversely to interest rates. If Treasury yields have risen since you closed, the lender can reinvest your payoff at a better rate than your loan, so the penalty collapses to the 1% floor. If yields have fallen, the lender cannot replace your income stream and the penalty grows sharply. The yield maintenance calculator lets you test your own balance and remaining term against a range of Treasury yields. One thing the floor guarantees is that an early payoff is never free, even in the most favorable rate environment you could hope for.

Worked example

A $3,000,000 loan at 5.75% fixed, four years remaining to maturity. Nothing changes between these three cases except the rate environment:

• Rates rose since closing — 4-year Treasury at 5.90%, so the penalty falls to roughly $30,000, the 1% floor.
• Rates flat — 4-year Treasury at 4.60%, so the penalty is roughly $130,000.
• Rates fell sharply — 4-year Treasury at 3.20%, so the penalty is roughly $280,000.

The loan is identical in all three rows. Only the rate environment changed. That is why yield maintenance is impossible to budget for in advance and must be quoted by the servicer in writing at the moment you intend to act. Budgeting a payoff from a figure someone quoted you last quarter is how a closing gets repriced at the table.

What it means for you

Yield maintenance is the reason a mathematically attractive refinance sometimes cannot be executed. If refinancing saves $90,000 over the remaining term but triggers a $180,000 yield maintenance payment, the trade destroys value even though the new rate is lower.

It also affects sales. A buyer taking over the property either assumes the loan (if it is assumable) or the seller pays off the loan and eats the penalty at closing. On a stabilized asset, that penalty is a real line item in your net proceeds, and it belongs in your hold-period model from day one — not discovered during escrow. If you are weighing a payoff against new debt, start a commercial real estate loan application and we will price the replacement loan against the actual penalty quote before you commit to either.

What to watch for

• Find the open window. Most yield maintenance provisions convert to an open prepayment period — often the last 3–6 months before maturity — where you can pay off with no penalty at all. Waiting until that window can save six figures.
• Yield maintenance is not defeasance. Defeasance replaces your loan's collateral with a portfolio of government securities rather than paying the loan off. It is common in CMBS loans, involves substantial transaction costs, and its economics behave differently. Know which one your loan actually has.
• Check the discount rate definition. Some documents discount at the Treasury rate, some at Treasury plus a spread. That spread meaningfully lowers the penalty. It is one of the few terms that is occasionally negotiable at origination.
• Ask for a payoff quote in writing. Servicers calculate yield maintenance as of a specific date. Quotes go stale as Treasury yields move, sometimes within days.
• Negotiate it up front, not later. The time to push for a declining prepayment schedule (5-4-3-2-1) instead of full yield maintenance is at term sheet stage. Once the loan closes, the provision is fixed.

How is yield maintenance calculated?

It is the present value of the remaining interest payments discounted at a matched-maturity Treasury yield, less the outstanding principal, with a typical floor of 1% of the balance. Every loan document defines the specifics slightly differently, so the note controls — not a general formula.

Can yield maintenance be waived?

Rarely after closing. Some loans waive it during a defined open window near maturity, or in connection with an approved sale where the buyer assumes the loan. The realistic path is either to time your payoff into the open window or to negotiate a declining penalty schedule before the loan closes.

Is yield maintenance better or worse than defeasance?

Neither is universally better. Yield maintenance is simpler and cheaper to execute administratively, but the penalty can be enormous when rates have fallen. Defeasance has meaningful fixed transaction costs but can be less expensive in certain rate environments, and the securities portfolio may retain residual value. The answer depends on the rate environment and the remaining term on the day you run the numbers.