How to Calculate Debt Yield in Commercial Real Estate
How to calculate debt yield: the exact formula commercial lenders use, a worked example, and how to tell if your deal clears the hurdle.
Divide the property's annual NOI by the loan amount: Debt Yield = NOI ÷ Loan Amount. A property with $1,200,000 NOI and a $12,000,000 loan has a debt yield of 10.0%. To find the maximum loan a lender will approve, run it in reverse: Max Loan = NOI ÷ Minimum Debt Yield.
Staring at a term sheet that came back shorter than you expected is frustrating. You ran the LTV, you checked the DSCR, and everything looked fine. The problem is usually the metric you forgot to check.
Lenders do not just look at your collateral or your payments; they look at your raw income cushion. This guide shows you exactly how to calculate debt yield, the blunt, unforgiving formula that often dictates your maximum loan proceeds.
The Simple Formula
The math is brutally simple. Take your Net Operating Income (NOI) and divide it by the loan amount.
Debt Yield = NOI ÷ Loan Amount
There is no amortization schedule to stretch. There is no interest rate to negotiate. The metric is completely immune to the structural tweaks borrowers use to flatter DSCR.
Step-by-Step: Calculating Debt Yield
Follow this exact process:
- Find your NOI: Start with the property's annual Net Operating Income.
- Find the Loan Amount: Take the total loan balance you are requesting.
- Divide: Divide the NOI by the Loan Amount.
- Convert to Percentage: Multiply by 100.
Here is a quick example:
| Metric | Amount |
|---|---|
| Net Operating Income (NOI) | $1,200,000 |
| Requested Loan Amount | $12,000,000 |
| Debt Yield | 10.0% |
In this scenario, $1,200,000 divided by $12,000,000 equals 0.10, or 10%.
What lenders actually underwrite — not your number
The formula is simple. The NOI input lenders use is not your number.
Borrowers almost universally submit their own pro forma NOI: current rents, a 3% vacancy assumption because the building happens to be fully occupied right now, projected rent growth, minimal reserves. When it gets to the lender's underwriting desk, a different number comes out the other side.
The underwriter applies a market vacancy factor of 5%–10%, carves out a replacement reserve of roughly $0.15–$0.25 per square foot, haircuts miscellaneous income, and may add a credit loss line. If your NOI was $1,100,000, the lender might underwrite it at $1,012,000 — an 8% haircut. According to Fannie Mae's DUS underwriting standards and Freddie Mac multifamily guidelines, lenders are required to apply stress factors to borrower projections before underwriting stabilized proceeds. CMBS programs, governed by CREFC's market standards, follow the same logic.
Here is what that haircut does under a 9% debt yield floor:
| Borrower Pro Forma NOI | Lender Underwritten NOI | |
|---|---|---|
| NOI used | $1,100,000 | $1,012,000 |
| Debt yield floor | 9.0% | 9.0% |
| Max loan | $12,222,222 | $11,244,444 |
That gap — nearly $1,000,000 — cannot be negotiated away in the loan structure. It can only be recovered by increasing actual NOI or bridging the equity shortfall at closing.
The reverse formula: sizing to the floor
If you do not know the exact loan amount yet, run the formula backwards. If a lender requires a 9% debt yield and your property generates $900,000 in underwritten NOI, your maximum loan is $10,000,000 ($900,000 ÷ 0.09).
This is the true power of the debt yield calculation: it sets the absolute ceiling on your leverage before you ever negotiate rate, amortization, or structure. The Federal Reserve's commercial real estate supervisory guidance and the FDIC's CRE concentration standards both flag high-leverage income-property loans — which is part of why income-based floors like debt yield have become standard lender practice across every loan type, not just CMBS.
CMBS lenders draw a harder line
CMBS lenders commonly demand 10% or more — and that minimum applies to their underwritten NOI, not yours. They cannot give discretionary exceptions the way a portfolio lender can, because their loans are securitized and subject to rating agency review. See what is a good debt yield for the full range by lender type.
Frequently asked questions
How do you calculate debt yield? The formula is always NOI ÷ Loan Amount, expressed as a percentage. A $1,200,000 NOI against a $12,000,000 loan gives a 10.0% debt yield. The calculation is identical regardless of property type, market, or loan structure — only the NOI figure and the loan amount change.
What does the debt yield calculation mean for CMBS lenders? CMBS lenders treat debt yield as a hard proceeds ceiling, not a guideline. Because their loans are securitized and subject to rating agency review, they cannot grant discretionary exceptions the way a portfolio bank can. A 10% minimum means the property's underwritten NOI must equal at least 10% of the requested loan amount before the deal can proceed.
How do you calculate debt yield in a spreadsheet? Put the annual NOI in one cell and the loan amount in another, then divide the first by the second and format the result as a percentage. That is the complete calculation — no additional inputs required.
How does the calculation change for mezzanine or bridge loans? For mezzanine debt, divide NOI by total debt (senior loan plus mezzanine), not just the senior balance. For bridge loans, lenders calculate both an as-is debt yield on current NOI and a stabilized debt yield on projected NOI at stabilization — both must clear the lender's floor.
What NOI should I use when calculating debt yield myself? Use a conservative estimate of what the lender will underwrite, not your pro forma. Run the formula on that number. If your deal clears at the haircut NOI, it will almost certainly clear the lender's review.
Does the calculation change on bridge or construction loans? Yes. Bridge lenders calculate both an As-Is Debt Yield and a Stabilized Debt Yield. Both must clear the floor.
What is the difference between debt yield and cap rate? Cap rate divides NOI by property value. Debt yield divides NOI by loan amount. See debt yield vs cap rate for the full comparison.
If DSCR clears the lender's hurdle, does debt yield automatically pass too? No. The two metrics move independently. DSCR depends on the interest rate and amortization. Debt yield ignores both. See debt yield vs DSCR for a full explanation.
How do I know which metric is going to cap my loan proceeds? Run all three constraints before submitting: max loan by LTV, max loan by DSCR, and max loan by debt yield. The lowest result is the binding constraint. The debt yield calculator and the CRE loan sizing calculator run all three side by side.
The Tool You Need
If you want to run the math without building a spreadsheet, use our debt yield calculator. It runs the calculation instantly, compares it against typical lender minimums, and sizes your loan against DSCR and LTV constraints simultaneously.
Stop guessing your proceeds. Run the numbers, find the binding constraint, and take your deal to the lender with confidence.
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