How debt yield works
Debt Yield = Net Operating Income ÷ Loan Amount
Net operating income is what the property earns after operating expenses but before any mortgage payment. Divide it by the loan and you have the annual cash return the lender would collect if it took the keys tomorrow and owned the building free and clear.
Turn the formula around and it becomes a sizing tool: maximum loan = NOI ÷ minimum debt yield. A lender with a 10% floor will advance $480,000 ÷ 0.10 = $4,800,000 against that property, regardless of what the appraisal says.
Minimum thresholds commonly sit around 9–10%, though the number moves with asset type — stabilized multifamily in a deep market sometimes clears at 8% or a little below, while hospitality and special-purpose assets frequently need 11% or more.
Why CMBS lenders trust it more than LTV or DSCR
LTV and DSCR are both built on inputs that can be argued about. Debt yield is not.
- LTV depends on an appraisal — one professional's opinion, which moves with cap rates. The same building supports very different loan amounts in two different quarters without a dollar of income changing.
- DSCR depends on the rate and the amortization schedule. Stretch amortization from 25 years to 30, or catch a lower rate, and the same NOI suddenly "covers" a much larger loan.
- Debt yield depends on nothing but income and loan size. No appraiser, no rate assumption, no amortization schedule. It is the one leverage test that cannot be engineered.
That is why it became standard underwriting after 2008: a large share of the loans that failed had passed both LTV and DSCR at origination, then broke when values fell. Bond investors buying CMBS wanted a test that would still be true in a different market.
Worked example: three tests, three answers
A stabilized multi-tenant industrial property with $480,000 of NOI, appraised at $8,000,000 — a 6.0% cap rate. The lender's parameters are 75% maximum LTV, 1.25x minimum DSCR and a 10% minimum debt yield, quoted at 6.25% on a 30-year amortization.
- LTV test — 75% × $8,000,000 = $6,000,000
- DSCR test — $480,000 ÷ 1.25 = $384,000 of allowable annual payments; at a 7.39% loan constant that supports roughly $5,200,000
- Debt yield test — $480,000 ÷ 0.10 = $4,800,000
The loan is $4,800,000. That is 60% LTV, fifteen points below the cap the term sheet advertised.
Now change one thing that has nothing to do with the building. If the quoted rate falls to 5.50%, the loan constant drops to about 6.81% and the DSCR test supports roughly $5,640,000. If the appraisal had come back at $9,000,000 instead, the LTV test would allow $6,750,000. Both tests moved by hundreds of thousands of dollars on inputs the property never controlled. Debt yield sat still at $4,800,000, because neither the rate nor the appraisal appears in the formula. The debt yield calculator will show you the same three-way comparison on your own numbers.
What it means for you
If you shop a deal and one lender's proceeds come in far below the rest, debt yield is usually the reason. That lender is often the one telling you the truth about the asset.
The important consequence: a debt-yield-constrained loan can only be raised by raising NOI. Nothing else touches it. Not a longer amortization, not an interest-only period, not a friendlier appraiser, not a lower rate. Signed leases, recaptured expenses, a corrected tax assessment and eliminated concessions all move it. The work is on the operating statement, not on the loan request. When the income is where you want it, bring us the T-12 and rent roll and we will show you which of the three tests binds.
What to watch for
- Get the debt yield floor in writing at term sheet stage. Plenty of term sheets state LTV and DSCR prominently and leave the debt yield requirement in the closing conditions, where it surfaces after you have paid for third-party reports.
- Underwritten NOI is not your NOI. A lender applies a market vacancy factor, a management fee even when you self-manage, and replacement reserves. Debt yield run on your own operating statement will almost always look better than the lender's version of it.
- It bites hardest on low-cap-rate assets, by arithmetic. At a 5.0% cap rate, a 10% debt yield floor mathematically caps you at 50% LTV. At a 6.0% cap it caps you at 60%. Expensive, low-yielding property simply cannot carry high leverage under this test, no matter how strong the borrower is.
- Interest-only does not help. Unlike DSCR, debt yield ignores your payment structure entirely, so the usual trick for stretching proceeds has no effect.
- Exit debt yield gets tested too. Bridge lenders often underwrite the debt yield a permanent lender would require at takeout, which quietly limits what a bridge loan can advance today.
What is a good debt yield?
Most lenders look for something around 9–10% as a minimum, and that is where a lot of stabilized commercial deals are sized. Strong multifamily in a major market sometimes clears at 8% or slightly under, while hotels, self-storage and single-tenant special-purpose assets often need 11% or higher. Higher is safer from the lender's perspective and means a smaller loan from yours.
How is debt yield different from DSCR?
DSCR divides NOI by the annual mortgage payment, so it changes whenever the interest rate or amortization schedule changes. Debt yield divides NOI by the loan balance, so it ignores payment terms completely. A loan can show a healthy 1.30x DSCR because of a 30-year amortization and a low rate while carrying a weak 7% debt yield — which is exactly the combination debt yield was designed to catch.
Why do CMBS lenders use debt yield?
Because a CMBS loan is sold to bond investors who have to be confident about the collateral years after closing, in a rate and value environment nobody can forecast. LTV depends on today's appraisal and DSCR depends on today's rate; both can look fine at origination and be meaningless three years later. Debt yield uses only income and loan balance, so it stays comparable across time and across markets.
