A DSCR loan is built around a simple question: does the rental property generate enough income to support the proposed mortgage payment?

In conventional lending, the borrower usually qualifies through personal income, W-2s, pay stubs, tax returns, and debt-to-income ratios. That can create friction for real estate investors whose taxable income is reduced by depreciation, business deductions, entity ownership, or portfolio complexity. A DSCR loan shifts the analysis toward the asset itself.

The lender still reviews credit, liquidity, experience, property value, title, insurance, and reserves. But the core underwriting metric is the debt service coverage ratio, or DSCR. When the property cash flow is strong enough, investors can buy, refinance, or cash out without reshaping their personal tax profile for a residential underwriting box.

DSCR formula calculator visual

DSCR compares qualifying rental income with the mortgage payment or annual debt service. The higher the ratio, the more cushion the lender sees between income and the required payment.

Income Monthly rent
/
Debt service PITI payment
=
Result DSCR
Scenario 1: tight 0.96x

$2,880 rent / $3,000 payment. Often needs lower leverage, more down payment, or a no-ratio structure.

Scenario 2: workable 1.15x

$3,450 rent / $3,000 payment. May qualify when credit, reserves, and property quality are solid.

Scenario 3: strong 1.35x

$4,050 rent / $3,000 payment. Stronger coverage can support better leverage and cleaner execution.