Debt Yield: The Lender's Actual Metric (And Why LTV + DSCR Are Downstream of It)

TL;DR

Loan-to-value (LTV) and debt service coverage ratio (DSCR) are the metrics most sponsors talk about. But CMBS and life company lenders typically have a third constraint that's often more binding: debt yield.

Debt yield = NOI / Loan Amount. It tells the lender what return they'd earn on their principal if they had to foreclose and operate the property themselves — independent of purchase price (which cap rate depends on) and independent of interest rate (which DSCR depends on).

For brokers, understanding debt yield explains why otherwise identical deals sometimes get different loan amounts from different lenders — and why low cap rate deals often can't achieve the LTV their sponsors want even when DSCR coverage looks fine.

Why Debt Yield Exists as a Metric

LTV is a point-in-time snapshot of the deal at origination. If the market prices the asset at 5% cap rate, LTV calculation uses the 5% cap rate value. But what if, at loan maturity 10 years later, the market is pricing similar assets at 7% cap rates? The asset's value has dropped by 40%+ on the same NOI — and the loan that was 65% LTV at origination is now effectively 90%+ LTV.

This is refinancing risk. At maturity, the lender needs the borrower to refinance and pay off the loan. If the asset's value has dropped below the loan balance, the refinance isn't possible at par — the borrower has to bring cash or sell the asset at a loss.

DSCR has a similar issue with interest rates. If the origination rate is 5% and rates at maturity are 8%, the same NOI supports a smaller loan. Deals that qualified at 1.30x DSCR at origination might only qualify at 1.15x DSCR in the refinancing market — below most lenders' thresholds.

Debt yield sidesteps both issues:

Debt yield = NOI / Loan amount

It doesn't depend on cap rate. It doesn't depend on interest rate. It's a pure measure of "how much NOI supports each dollar of loan." A lender who underwrites to a minimum debt yield of 9.0% is saying: at loan maturity, the NOI must be at least 9% of the outstanding loan balance — regardless of what cap rates or interest rates are doing.

The Math

Quick example:

• NOI: $500,000
• Loan amount: $5,000,000
• Debt yield: $500,000 / $5,000,000 = 10.0%

If the same deal:

• NOI: $500,000
• Cap rate: 6.0% → Value: $8,333,333
• LTV: $5,000,000 / $8,333,333 = 60%
• Interest rate: 6.5%, 30-yr amort → Annual debt service: ~$380,000
• DSCR: $500,000 / $380,000 = 1.32x

So this deal is 60% LTV, 1.32x DSCR, and 10% debt yield — all from the same underlying NOI and loan amount. Each metric approaches sizing from a different angle.

Typical Debt Yield Thresholds

Debt yield thresholds vary by lender type, asset class, and tenant credit:

CMBS

• Investment-grade single tenant net lease, strong location: 8.0-9.0% minimum
• Speculative-grade or weaker location: 9.0-10.5% minimum
• Multi-tenant retail, class A: 8.5-10.0% minimum
• Multi-tenant retail, class B: 10.0-12.0% minimum
• Multifamily, class A: 7.5-8.5% minimum
• Office (suburban): 10.0-12.0%+ minimum (reflects market stress)

Life Insurance Companies

Generally 50-100 bps more conservative than CMBS on the same asset class.

Banks

Variable — often focus more on LTV and DSCR than debt yield for relationship-driven deals, but typically impose debt yield floors of 8.0-9.0%.

Debt Funds

More flexible on debt yield (sometimes under 7.5%) in exchange for higher rates and shorter terms.

Why Debt Yield Often Binds Before LTV

For low cap rate deals, debt yield tends to be the binding constraint. Example:

Deal: 5.0% cap rate, $10M value, $500K NOI.

• 65% LTV: loan of $6.5M
• Debt yield: $500K / $6.5M = 7.69%

If the lender's minimum debt yield is 8.5%, this deal doesn't support 65% LTV. Maximum loan is:

• $500K / 8.5% = $5.88M
• $5.88M / $10M = 58.8% LTV

The sponsor can only get ~59% LTV on this deal — not because DSCR fails (it's 1.30x+ at 6.5% rate), not because LTV fails (65% is below the lender's LTV ceiling), but because debt yield is below the lender's floor.

This is common on trophy deals with tight cap rates. Sponsors see the strong DSCR and think they can push LTV to 70-75%, only to find the lender capping the loan at 55-60% LTV because debt yield wouldn't clear.

Why Debt Yield Often Doesn't Bind on Higher Cap Rate Deals

Conversely, for higher cap rate deals, debt yield tends to be easy. Example:

Deal: 7.5% cap rate, $10M value, $750K NOI.

• 65% LTV: loan of $6.5M
• Debt yield: $750K / $6.5M = 11.5%

Comfortably above any lender's debt yield floor. On this deal, LTV or DSCR is the binding constraint — the sponsor can focus on those without worrying about debt yield.

The Math Behind Which Constraint Binds

The binding constraint depends on the relationship between cap rate, interest rate, and amortization:

If cap rate > debt yield × LTV: LTV binds first. The lender funds up to LTV limit.

If cap rate < debt yield × LTV: Debt yield binds first. The lender funds up to debt yield limit, which will be a lower LTV than requested.

For typical CMBS (8.5% min debt yield, 65% LTV): the crossover is at 5.5% cap rate. Deals above 5.5% cap rate bind on LTV; deals below bind on debt yield.

This is why sub-5.5% cap rate deals routinely get lower LTV than requested. It's not that the deals "don't qualify" — they qualify at lower leverage.

How Interest-Only Structures Don't Help Debt Yield

A common broker move on tight-coverage deals is to push for interest-only (IO) structure. IO reduces debt service (no principal amortization), which boosts DSCR significantly.

But IO doesn't affect debt yield. Debt yield is NOI divided by loan amount — not NOI divided by debt service. Whether the loan amortizes or not, the debt yield calculation is the same.

So: IO can rescue a DSCR-constrained deal. It cannot rescue a debt-yield-constrained deal. For tight cap rate deals where debt yield is the binding constraint, IO doesn't help the LTV question.

What does help:

• Lower loan amount (sponsor brings more equity)
• Higher NOI (challenging — requires lease modifications or market rent increases)
• Lender with lower debt yield threshold (debt funds typically most flexible)

What Brokers Should Do

For any deal under offer, calculate all three sizing metrics:

1. LTV: (Loan amount) / (Purchase price)
2. DSCR: (NOI) / (Annual debt service at lender's quoted rate)
3. Debt yield: (NOI) / (Loan amount)

Compare each to the lender's minimums:

Whichever metric is closest to (or over) the threshold is the binding constraint. If debt yield is binding, the conversation with the lender should focus on debt yield — not DSCR or LTV.

How Debt Yield Affects Pricing

Like DSCR, debt yield affects not just whether the loan gets approved, but at what rate:

• Strong debt yield (11%+): lender's tightest spread
• Moderate debt yield (9-10%): standard spread
• Marginal debt yield (8-8.5%): rate premium + tighter structural provisions
• Below 8.0%: often restructured or declined

Deals with stronger debt yield typically get better pricing — and the gap between "strong" and "marginal" can be 50-75 bps on the rate.

The Refinancing Lens

For a sponsor holding a loan for 10 years, the question at maturity is: can this deal refinance? The answer depends on NOI and debt yield.

If NOI has grown 15% over 10 years, and the loan amount has amortized 20%, the debt yield at maturity is much higher than at origination. Refinancing is easy — the deal is "de-risked" from the lender's perspective.

If NOI is flat and the loan has been IO (so no amortization), the debt yield at maturity equals the debt yield at origination. Refinancing depends on whether today's lenders accept that debt yield — which is usually fine unless the asset class has become challenged (e.g., suburban office in 2020-2025).

If NOI has declined and the loan was IO, the debt yield at maturity is below origination. Refinancing at the same loan balance may not be possible at conventional terms.

This is why CMBS lenders care so much about the metric: they're not just sizing the loan for today, they're sizing it for the refinancing conversation 10 years out.

Closing

LTV is what sponsors see. DSCR is what investors ask about. Debt yield is what the lender actually uses to size the loan when market conditions get interesting.

For brokers, fluency with debt yield is part of the lender-facing skill set. It explains why low cap rate deals can't always achieve the leverage the sponsor wants, and it focuses the conversation on what lenders actually care about — which is rarely what sponsors think lenders care about.