Walk into any commercial real estate investment committee and you'll hear three metrics mentioned repeatedly: cap rate, DSCR, and debt yield. Each measures something different about a property's financial profile, and understanding when to prioritize each one separates sophisticated analysts from beginners.
This guide breaks down all three metrics, explains how they relate to each other, and shows you when each one matters most. Whether you're a lender evaluating risk, an investor analyzing returns, or a broker structuring deals, you'll learn how to use these metrics together for comprehensive analysis.
The Three Metrics Explained
Before diving deep, let's establish what each metric measures:
| Metric | Formula | What It Measures | Primary User |
|---|---|---|---|
| Cap Rate | NOI ÷ Value | Unlevered return / valuation | Investors |
| DSCR | NOI ÷ Debt Service | Cash flow coverage | Lenders |
| Debt Yield | NOI ÷ Loan Amount | Lender's potential recovery | Lenders (esp. CMBS) |
Notice that all three use Net Operating Income (NOI) in the numerator—the difference lies in what we're comparing NOI against.
Cap Rate: Investor's Perspective
Cap Rate = NOI ÷ Property Value × 100%
The capitalization rate measures the unlevered return an investor earns on a property, ignoring financing. It answers: "If I paid all cash, what would my return be?"
Cap Rate Characteristics
- Rate-independent: Doesn't change when interest rates move
- Market-driven: Reflects investor demand for property type/location
- Risk indicator: Higher cap rates = higher perceived risk
- Valuation tool: Commonly used to price properties (Value = NOI ÷ Cap Rate)
Cap Rate Example
A multifamily property generates $400,000 NOI and is listed for $6,666,667.
Cap Rate = $400,000 ÷ $6,666,667 = 6.0%
This means an all-cash buyer would earn 6% annually before appreciation or depreciation.
When Cap Rate Matters Most
- Comparing properties across markets or property types
- Assessing whether a property is fairly priced
- Evaluating unlevered investment returns
- Setting exit value assumptions in investment models
Calculate cap rates for any property with our Cap Rate Calculator.
DSCR: Cash Flow Coverage
DSCR = NOI ÷ Annual Debt Service
The Debt Service Coverage Ratio measures whether the property generates enough income to cover its mortgage payments. It answers: "Can this property pay its debt?"
DSCR Characteristics
- Rate-sensitive: Changes when interest rates move
- Amortization-sensitive: Longer amortization improves DSCR
- Cash flow focused: Measures actual ability to pay
- Manipulable: Can be improved by adjusting loan terms
DSCR Example
Same property with $400,000 NOI. Borrower seeks $5,000,000 loan at 6.5%, 25-year amortization.
Annual Debt Service = $406,680
DSCR = $400,000 ÷ $406,680 = 0.98x
Problem: DSCR below 1.0x means negative cash flow. Loan won't be approved.
The DSCR Manipulation Problem
DSCR can be "improved" without changing the underlying property economics:
| Scenario | Annual Debt Service | DSCR |
|---|---|---|
| $5M loan, 6.5%, 25-year | $406,680 | 0.98x |
| $5M loan, 6.5%, 30-year | $378,480 | 1.06x |
| $5M loan, 6.5%, Interest-Only | $325,000 | 1.23x |
The property hasn't changed—only the loan structure. This is why sophisticated lenders don't rely on DSCR alone.
Debt Yield: Lender's Safety Net
Debt Yield = NOI ÷ Loan Amount × 100%
Debt yield measures the return a lender would earn if they foreclosed and operated the property debt-free. It answers: "What's my return if I have to take the property back?"
Debt Yield Characteristics
- Rate-independent: Doesn't change when interest rates move
- Amortization-independent: Can't be manipulated with loan structure
- Leverage-focused: Directly measures how much NOI backs each dollar of debt
- Hard to game: Only improves with more NOI or less debt
Debt Yield Example
Same property with $400,000 NOI. Borrower seeks $5,000,000 loan.
Debt Yield = $400,000 ÷ $5,000,000 = 8.0%
If most CMBS lenders require 9-10% minimum debt yield, this loan is over-leveraged regardless of how DSCR is structured.
Why CMBS Lenders Love Debt Yield
CMBS loans are typically fixed-rate, long-term, and non-recourse. Lenders need confidence that if the borrower defaults, they can recover their investment by operating or selling the property. Debt yield provides this assurance without being influenced by loan terms.
"I don't care what DSCR you can manufacture with interest-only and 35-year amortization. If debt yield is below 9%, the deal is over-leveraged. Period."
— CMBS Underwriter
Calculate debt yield for any deal with our Debt Yield Calculator.
How the Metrics Relate
These three metrics are mathematically connected. Understanding these relationships helps you quickly assess deals and identify problems.
The Debt Yield / Cap Rate / LTV Relationship
Debt Yield = Cap Rate ÷ LTV
This relationship reveals important dynamics:
| Cap Rate | LTV | Debt Yield | Assessment |
|---|---|---|---|
| 5% | 80% | 6.25% | Over-leveraged |
| 6% | 70% | 8.57% | Marginal |
| 7% | 70% | 10.0% | Solid |
| 8% | 65% | 12.3% | Strong |
Key insight: Low cap rate properties require lower LTV to maintain adequate debt yield. A 5% cap rate property at 80% LTV has only 6.25% debt yield—inadequate for most lenders.
The Rate Environment Impact
Here's how rising rates affect each metric for the same property:
Same Property: $400K NOI, $5M Loan, 75% LTV
| Rate | Cap Rate | Debt Yield | DSCR (25-yr am) |
|---|---|---|---|
| 4.0% | 6.0% | 8.0% | 1.27x |
| 6.0% | 6.0% | 8.0% | 1.05x |
| 7.5% | 6.0% | 8.0% | 0.90x |
Notice: Cap rate and debt yield don't change. Only DSCR is affected by interest rates.
When Each Metric Matters Most
Prioritize Cap Rate When:
- Comparing investment opportunities across markets
- Assessing whether acquisition pricing is reasonable
- Modeling exit values and investment returns
- Evaluating all-cash or low-leverage purchases
Prioritize DSCR When:
- Evaluating actual cash flow after debt service
- Determining if property can cover payments month-to-month
- Analyzing floating-rate loan risk
- Setting loan covenants that must be maintained
Prioritize Debt Yield When:
- Assessing maximum leverage regardless of rate environment
- Comparing risk across deals with different loan terms
- Evaluating deals in volatile rate environments
- Underwriting non-recourse loans where foreclosure is possible
Real-World Case Study
Let's analyze a real scenario that shows why you need all three metrics:
The Deal:
- Class A office building in secondary market
- Purchase Price: $25,000,000
- NOI: $1,500,000
- Requested Loan: $18,750,000 (75% LTV)
- Rate: 6.5%, 25-year amortization
Metric Calculations:
Cap Rate
6.0%
$1.5M ÷ $25M
DSCR
1.23x
$1.5M ÷ $1.22M DS
Debt Yield
8.0%
$1.5M ÷ $18.75M
Analysis:
- Cap Rate (6.0%): Reasonable for Class A office in current market, though compressed compared to historical averages. Buyer is paying a premium.
- DSCR (1.23x): Meets minimum requirements but provides thin cushion. A 20% NOI decline would bring DSCR below 1.0x.
- Debt Yield (8.0%): Below the 9-10% threshold most CMBS lenders require. This deal is over-leveraged from a debt yield perspective.
Verdict: Reduce Loan Amount
To achieve 9% debt yield, maximum loan = $1,500,000 ÷ 9% = $16,666,667 (66.7% LTV). The borrower needs either more equity or a lower purchase price.
Best Practices for Analysis
1. Always Calculate All Three
Each metric reveals something the others miss. A deal might look great on one metric and terrible on another. Use our Loan Sizing Calculator to analyze all constraints simultaneously.
2. Understand the Rate Environment
In low-rate environments, DSCR can look artificially strong. In high-rate environments, DSCR may fall while debt yield remains stable. Adjust your focus accordingly.
3. Stress Test Each Metric
- Cap Rate: What if cap rates expand 50-100 bps at exit?
- DSCR: What if NOI declines 10-20%? What if rates increase 200 bps?
- Debt Yield: Does it maintain minimum thresholds under stress scenarios?
4. Know Your Lender's Priorities
Different lenders weight metrics differently:
- Banks: DSCR-focused, may not use debt yield
- CMBS: Debt yield primary, DSCR secondary
- Life Companies: Conservative on all metrics
- Bridge Lenders: LTV-focused, less emphasis on cash flow
Conclusion
There's no single "most important" metric—the best analysis uses all three together. Cap rate tells you about valuation, DSCR tells you about cash flow, and debt yield tells you about leverage risk independent of financing terms.
Ready to analyze your next deal with all three metrics?
- Cap Rate Calculator
- DSCR Calculator
- Debt Yield Calculator
- Loan Sizing Calculator — Find the binding constraint