What Is DSCR (Debt Service Coverage Ratio)?

The debt service coverage ratio (DSCR) answers a lender's core question in one number: does the property earn enough to cover its loan payments? It's the metric behind “DSCR loans,” which qualify a rental on the property's own income rather than the borrower's salary — a reason it matters far more to investors than to ordinary homebuyers.

The formula

• NOI — income after operating expenses, before the loan. See how to calculate NOI.
• Debt service — the total annual mortgage payments (principal + interest).

DSCR is simply the ratio between the two. Above 1.0, the property earns more than its payments; below 1.0, it earns less and the owner has to cover the gap from elsewhere.

A worked example

A DSCR of 1.25 means the property produces $1.25 of net income for every $1.00 of loan payment — a 25% cushion above breaking even.

What the thresholds mean

• DSCR < 1.0 — the property doesn't cover its own debt. It has negative cash flow before you even account for reserves; most lenders decline.
• DSCR = 1.0 — exactly break-even. No margin for a vacancy, a repair, or a rate bump. Lenders treat this as risky.
• DSCR ≥ 1.25 — a common minimum for investment-property and DSCR loans. The 25% buffer is what gives the lender comfort.
• DSCR ≥ 1.5 — comfortably covered; stronger terms and lower rates are more likely.

The exact bar varies by lender, loan program, and market conditions — treat 1.25 as a widely used reference point, not a universal rule, and confirm the requirement with the specific lender.

Why investors watch it

• It can qualify a loan on the property alone. DSCR loans skip personal income verification, which is why they're popular for investors with many properties or non-traditional income.
• It sizes the loan. Because the ratio must clear a threshold, DSCR effectively caps how much you can borrow against a given NOI — a lower rate or longer term raises DSCR and can unlock a larger loan.
• It's a fast health check. Even without a DSCR loan, running the ratio tells you at a glance whether a deal's income comfortably clears its debt — closely related to whether it produces positive cash flow.

One caution: DSCR is built on NOI, which excludes capital reserves. A property can post a healthy DSCR and still strain once you set money aside for a future roof — so pair it with a full cash-flow pro-forma before relying on it.