Cap Rate vs DSCR: What's the Difference?

Two numbers dominate real estate investment analysis: cap rate and DSCR. They're related but measure fundamentally different things. Confusing them — or relying on one while ignoring the other — leads to bad deals.

Definitions

Cap Rate (Capitalization Rate)

Formula: Net Operating Income (NOI) ÷ Property Value × 100

Cap rate measures a property's unlevered return — what you'd earn if you paid all cash. It ignores financing entirely.

Example:

• Property value: $250,000
• Annual gross rent: $21,600 ($1,800/month)
• Operating expenses (taxes, insurance, maintenance, vacancy, PM): $7,200
• NOI: $14,400
• Cap rate: $14,400 ÷ $250,000 = 5.76%

DSCR (Debt Service Coverage Ratio)

Formula: Monthly Rental Income ÷ Monthly PITIA

DSCR measures whether the property's income covers its debt obligations. It only matters when you have a mortgage.

Example (same property):

• Monthly rent: $1,800
• Monthly PITIA: $1,550 (at 75% LTV, 7.25%)
• DSCR: $1,800 ÷ $1,550 = 1.16

Key Differences

When to Use Each

Use Cap Rate When:

• Comparing properties across different price points and markets
• Evaluating an all-cash purchase (cap rate = your actual return)
• Assessing market conditions (low cap rates = expensive market, high = affordable)
• Comparing real estate to other investments (stocks, bonds, etc.)

Use DSCR When:

• Applying for a DSCR loan (lender's primary metric)
• Evaluating leveraged returns (does the property pay for itself?)
• Analyzing cash flow viability (will you need to subsidize the mortgage?)
• Comparing loan scenarios (how does 20% vs. 25% down affect cash flow?)

How They Work Together

High Cap Rate + High DSCR

• Property: $150,000, rent: $1,300/month, NOI: $10,800
• Cap rate: 7.2% | DSCR: 1.45

Interpretation: Great cash flow market. Property earns well relative to its value, and debt is easily covered. Common in: Memphis, Cleveland, Birmingham.

High Cap Rate + Low DSCR

• Property: $150,000, rent: $1,300/month, NOI: $10,800
• But PITIA is $1,350/month (high rate, high taxes)
• Cap rate: 7.2% | DSCR: 0.96

Interpretation: The property earns well unlevered, but financing costs eat the profit. This happens with high interest rates, high property taxes, or low down payments.

Low Cap Rate + High DSCR

Unusual combination — typically means the property was purchased well below market value or has below-market financing.

Low Cap Rate + Low DSCR

• Property: $500,000, rent: $2,800/month, NOI: $21,600
• PITIA: $3,100/month
• Cap rate: 4.3% | DSCR: 0.90

Interpretation: Expensive market, negative cash flow. Common in: San Francisco, NYC, LA. You're betting on appreciation, not income.

The Relationship Between Cap Rate and DSCR

Mathematical Connection

As cap rate increases, DSCR generally increases (assuming similar financing terms). Higher cap rate = more income relative to value = more income to cover debt.

Rule of thumb: With 75% LTV at 7.25%, you need approximately a 5.5%+ cap rate to achieve DSCR above 1.0.

Cap Rate Floor for DSCR Qualification

If the cap rate is below these thresholds, the property likely won't achieve a 1.0 DSCR — regardless of how much you put down (up to the LTV shown).

Common Mistakes

Mistake 1: Using Cap Rate to Evaluate Leveraged Returns

Cap rate ignores your mortgage. A 6% cap rate property might produce a 15% leveraged return (great) or a -2% leveraged return (terrible) depending on your financing terms.

Mistake 2: Chasing High Cap Rates

8%+ cap rates exist in D-class neighborhoods with high vacancy, tenant turnover, and crime. The cap rate looks great on paper. The reality is evictions, property damage, and declining values.

Mistake 3: Ignoring Cap Rate in DSCR Analysis

A property can have 1.20 DSCR but a 4% cap rate. That means you're barely cash-flowing on a leveraged basis and the underlying asset isn't generating much income relative to its value. If rates rise when you refinance, you're underwater.

Mistake 4: Using Pro Forma Instead of Actual

Pro forma cap rates assume full occupancy and market rents. Actual cap rates use real income and real expenses. DSCR lenders typically use the appraiser's market rent (1007 form), not your optimistic projections.

Frequently Asked Questions

What's a good cap rate for DSCR investing?

5.5–8% in most markets. Below 5% is tough to make DSCR work. Above 8% is excellent but verify the neighborhood quality.

Does the lender care about cap rate?

Not directly. DSCR lenders calculate DSCR, not cap rate. But cap rate affects the underlying income metrics that feed into DSCR.

Should I buy a low cap rate property with high appreciation?

Only if you can sustain negative cash flow or if STR/MTR strategies boost income above the traditional cap rate. Appreciation-only strategies are riskier and require reserves to cover monthly shortfalls.

Can I improve a property's cap rate?

Yes — by increasing income (raise rents, reduce vacancy, add units) or reducing expenses (lower taxes through appeal, reduce maintenance through renovation, renegotiate insurance).

The Bottom Line

Cap rate tells you how hard the property works. DSCR tells you if the property can carry its debt. You need both metrics to make informed DSCR investment decisions. A 7% cap rate with 1.30 DSCR? Strong deal. A 4% cap rate with 0.95 DSCR? Pass — unless you have a specific value-add or strategy play.

Analyze both metrics on your next deal at HonestCasa.