What Is DSCR, Actually? The Ratio Explained From Scratch
DSCR stands for debt service coverage ratio — it's the property's monthly rental income divided by its monthly debt payment. A DSCR of 1.0 means the rent exactly covers the loan; above 1.0 means it covers more than the loan. That's the whole idea.
NightYield Editorial
STR-DSCR research & underwriting desk
Published 2026-07-03
The formula, and why it exists
DSCR = Gross Monthly Rental Income ÷ Monthly PITIA. PITIA is principal, interest, taxes, insurance, and association dues if any — the full monthly obligation, not just principal and interest. The ratio answers one question: does this property pay for itself?
It exists because conventional underwriting was built around a borrower's personal income — pay stubs, tax returns, employer verification. That model doesn't fit an investor who owns the income-producing asset itself. DSCR shifts the underwriting question from "can this person afford it" to "does this asset afford it." The property is evaluated on its own economics.
What the number actually means at different levels
A DSCR above 1.0 means the property produces a surplus after covering PITIA — the higher the number, the bigger the cushion. A DSCR of exactly 1.0 means income and debt payment are equal, no surplus, no deficit. Below 1.0 means the property's income alone doesn't cover the monthly obligation, and the shortfall has to come from somewhere else — reserves, other income, or a different loan structure.
- DSCR ≥ 1.25: strong coverage, typically the easiest tier to price and qualify.
- DSCR 1.0–1.24: qualifies with most programs, often at a modest pricing adjustment.
- DSCR below 1.0: some lenders offer no-ratio or sub-1.0 programs, usually at a rate premium and larger down payment.
Where the rental income figure comes from matters as much as the ratio itself. For a long-term rental it's typically the appraiser's market-rent opinion on the 1007 rent schedule. For a short-term rental it's a projected income figure, which is why qualifying on projected Airbnb income works differently in practice.
Why this ratio replaces DTI for investors
A W-2 buyer gets underwritten on debt-to-income — their personal paycheck against their personal debts. An investor buying a rental doesn't need their paycheck evaluated at all, because the property is expected to carry itself. That's the entire logic switch, and it's covered in more depth in DTI vs. DSCR.
Key takeaways
- DSCR = Gross Monthly Rental Income ÷ Monthly PITIA — a straightforward ratio, not a black box.
- Above 1.0 means the property covers its own debt payment with room to spare.
- Below 1.0 still qualifies with some lenders, usually at a rate premium.
- The ratio replaces DTI because it evaluates the asset's cash flow instead of the borrower's personal income.