Debt Yield vs DSCR: How the Two Ratios Diverge

Your DSCR came back at 1.31x — well clear of the lender's 1.25x hurdle. You were confident the loan was sized. Then the proceeds came back $1.8 million short of the ask.

The culprit was debt yield. Both metrics start with NOI, but they compare it to completely different denominators. In today's rate environment they increasingly point to different numbers, and the one that produces the lower maximum loan is the one that actually controls your proceeds.

Debt Yield = NOI / Loan Amount
DSCR = NOI / Annual Debt Service

The short version

Debt yield is term-neutral. It ignores interest rate and amortization. If a property has $1,000,000 of NOI and an $11,000,000 loan, the debt yield is 9.09% no matter how the loan is structured.

DSCR is payment-sensitive. A lower interest rate, longer amortization period, or interest-only period can improve DSCR because annual debt service falls. The property did not produce more income, but the payment burden changed.

Why lenders use both

DSCR answers a practical cash-flow question: can the property pay the mortgage this year? That matters because a loan with weak payment coverage can default even if the collateral looks valuable.

Debt yield answers a harder credit question: how much income protects the lender relative to the dollars advanced? That matters because loan terms can change, rates can reset, and appraisals can move. The Commercial Real Estate Finance Council notes that CMBS transactions specifically rely on debt yield as the primary income-based test because its result is not affected by the rate environment at origination.

Example: same DSCR, different risk

Imagine two properties each showing a 1.25x DSCR. One loan is sized at 5.50% over 30 years. The other is sized at 7.25% over 25 years. The DSCR can be the same, but the debt yield will often be different because the loan balances required to create those payments are different.

That is why a lender may like the DSCR and still reduce proceeds when debt yield is thin.

Which constraint is winning right now

In a high-rate environment, DSCR is the primary deal-killer. When borrowing costs rise, debt service expands while NOI holds flat — DSCR compresses rapidly, and many loans that would have worked at a 5% rate simply fail at 7%.

Debt yield stays quiet in the background during those moments. But the dynamic flips the moment rates drop. Lower rates shrink debt service, which makes DSCRs look artificially strong. At that point, debt yield immediately reasserts as the binding constraint — because a lower payment does nothing to change the income-to-loan-balance ratio. Borrowers who sized deals on DSCR during low-rate periods consistently discover that their leverage was always capped by a DY floor they were not watching. According to Mortgage Bankers Association data on CRE origination cycles, this shift between binding constraints tracks closely with the Federal Funds rate.

When DSCR usually binds

DSCR tends to bind when interest rates are high, amortization is short, or NOI is low relative to the requested loan. In those cases, annual debt service consumes too much of the income stream.

Use the DSCR calculator when you want to test payment coverage and max loan amount at a target coverage ratio.

When debt yield usually binds

Debt yield often binds when a lender requires a firm income floor, especially in CMBS, bridge, or higher-risk transactions. It can also bind when an appraisal supports more debt than the income justifies, or when DSCR artificially looks clean because the loan is interest-only.

Use the debt yield calculator when you want to know whether NOI supports the loan request before loan terms are negotiated.

Which metric matters more?

Neither one replaces the other. A lender can approve only the loan amount that clears all required tests. If DSCR supports $12 million but debt yield supports $10 million, the debt-yield number controls. If debt yield supports $12 million but DSCR supports $10 million, DSCR controls.

Debt yield and DSCR are not competing formulas. They are different lenses on the same credit decision: one measures income against the loan balance, and the other measures income against the loan payment. Run the CRE loan sizing calculator to compare both — along with LTV — side by side, so you can see which limit will actually control before you sit across from a lender.

Frequently asked questions

Can a deal pass DSCR but fail debt yield? Yes — and it happens frequently. If an appraisal supports high loan proceeds, or if a loan is structured interest-only so that DSCR looks clean because there is no amortization, debt yield can still cap the proceeds because it ignores both. This is exactly why CMBS lenders use debt yield as a backstop to DSCR: one catches payment risk, the other catches income cushion risk.

Can a deal pass debt yield but fail DSCR? Yes. When interest rates are high, debt service can consume more of the NOI than the lender's DSCR minimum allows, even if the income-to-loan-balance ratio looks fine. This is the dominant pattern in high-rate environments — DSCR binds first, before debt yield ever becomes relevant.

Why does debt yield not change when I negotiate a lower interest rate? Because debt yield ignores the interest rate entirely. Lowering the rate reduces annual debt service — which helps DSCR — but it does not change the relationship between NOI and loan balance. If the lender requires $1.00 of NOI for every $10.00 lent, a lower rate does not produce more income.

What is a typical DSCR minimum and how does it compare to debt yield floors? Most conventional lenders require 1.20x–1.30x DSCR. CMBS and life companies often require 1.25x. Debt yield floors for the same lenders typically run 8.5%–10% for standard assets, and 11%–13% for office or transitional properties. Both apply simultaneously — the lower resulting loan amount is the one that controls.

How do I model which constraint will bind before submitting a loan request? Calculate max loan by all three constraints — DSCR, debt yield, and LTV — using realistic lender assumptions and the lender's underwritten NOI (not your pro forma). The CRE loan sizing calculator does this automatically. Whichever produces the lowest number is your answer.