What Is the Debt Service Coverage Ratio?

The Debt Service Coverage Ratio (DSCR) measures whether a rental property generates enough income to cover its own mortgage payment. It is the foundational metric in investment property lending, replacing the personal income analysis used in conventional loans.

Instead of pulling your tax returns or calculating your debt-to-income ratio, a DSCR lender asks one question: Does the rent cover the mortgage?

The DSCR Formula

  DSCR = Gross Monthly Rent ÷ Total Monthly PITIA

PITIA stands for:

Principal and interest (the loan payment)
Taxes (monthly property tax escrow)
Insurance (homeowner's insurance, often landlord policy)
Association dues (HOA fees, if any)

Example: Calculating DSCR on a Single-Family Rental

Say you're buying a $300,000 single-family home in Atlanta. Here's the math:

Gross monthly rent:

What DSCR Do You Need to Qualify?

Minimum DSCR requirements vary by lender and program:

1.25x or higher — Strong cash flow; qualifies for best rates and highest LTV (up to 80% in many programs)

1.10x to 1.24x — Good cash flow; qualifies at standard rates

1.00x to 1.09x — Break-even; many programs still approve, sometimes with slightly higher rates

Below 1.00x — Property loses money on paper; only specialized programs qualify this, often with lower LTV

How Lenders Determine the Gross Rent

Lenders use one of two methods to determine the rent figure in the DSCR calculation:

Lease agreement — If the property is already rented, lenders use the current signed lease.

Market rent appraisal — If the property is vacant or being purchased, lenders order a rent schedule from the appraiser (Form 1007 or market rent addendum).

For short-term rentals (Airbnb, VRBO), many lenders will use 75% of documented 12-month gross short-term rental income instead of a traditional market rent figure.

Why the DSCR Model Works for Investors

Conventional mortgages cap investors at 10 financed properties and require full personal income documentation every time. The DSCR model is property-centric — your personal income, employment history, or number of existing mortgages is largely irrelevant. This makes DSCR loans ideal for:

Self-employed investors who write off significant income

Investors who already own 4, 6, or 10+ properties

LLC-vested portfolio owners who want commercial privacy

Retirees living off portfolio income rather than a W-2

Key Takeaway

The DSCR is simple: rent divided by mortgage payment. A ratio above 1.0 means the property pays for itself. The higher the ratio, the better your terms. If you're evaluating an investment property and want to know whether it will qualify for a DSCR loan, run this calculation before you make an offer.

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What Is a DSCR Loan?

A DSCR (Debt Service Coverage Ratio) loan qualifies borrowers based on property rental income rather than personal tax returns or W-2s. Ideal for real estate investors with multiple properties or self-employed income.

What Is a DSCR Ratio and How Do Lenders Calculate It?