DSCR vs Debt Yield: Which Lender Test Binds and When
By Devon Coombs, CPA, MBA · Teaching Professor of Finance, Santa Clara University · Reviewed August 2026
Use DSCR when the question is whether property cash flow covers the actual loan payments, since it divides NOI by the annual debt service produced by the quoted rate and amortization. Use debt yield when the question is how much loan the collateral itself supports, since NOI over the loan amount ignores loan terms entirely. Lenders typically size to whichever test produces the smaller loan, so a deal generally has to clear both.
| DSCR | Debt yield | |
|---|---|---|
| Formula | NOI ÷ annual debt service | NOI ÷ loan amount |
| Sensitivity to loan terms | Moves with interest rate and amortization | Ignores rate and amortization entirely |
| What it measures | Cash flow cushion over the loan payment | Raw collateral yield on the lender's basis |
| Interest-only effect | Inflated during an interest-only period | Unaffected |
| Typical minimums | Often 1.20x to 1.35x | Often 8 to 10 percent |
| When it binds | Tends to bind when rates are high | Tends to bind when rates are low |
When DSCR is the right tool
DSCR is the right test for payment feasibility, refinance analysis, and any question that depends on the actual terms of the debt, because the interest rate and amortization period flow directly into the denominator. It is also the number a borrower feels month to month, since it measures the cushion between NOI and the payment. Practitioners typically underwrite DSCR on an amortizing payment even when the loan begins interest only, because the interest-only figure flatters coverage that disappears once amortization starts. A stressed DSCR at an assumed refinance rate is the standard check on exit risk.
When Debt yield is the right tool
Debt yield is the right test when a lender wants a sizing floor that cannot be inflated by cheap debt or a long amortization schedule, which is why it became a standard constraint in CMBS and construction takeout underwriting. NOI over the loan amount approximates the return the lender would earn on its basis if it took the property back on day one. It also travels well across deals and across time, since a 9 percent debt yield means the same thing in a 4 percent rate environment as in a 7 percent one. Loan sizing generally runs the LTV, DSCR, and debt yield tests together and takes the smallest answer.
The common mistake
The common error is reading a comfortable DSCR as proof the loan sizes. In a low-rate environment, cheap debt lets a large loan clear a 1.25x coverage test while failing a 9 percent debt yield floor, so the debt yield constraint binds and proceeds come in below what the borrower modeled. At high rates the tests tend to reverse and DSCR binds instead. Underwriting only the test a deal happens to pass, rather than sizing to the minimum of both, is how borrowers arrive at closing short of proceeds.
Work the numbers yourself
Both concepts are taught in depth, with practice questions, in the free Real Estate Finance course.