DSCR Explained: How Lenders (and Investors) Judge a Rental Property
RealtyDealScout Team
August 12, 2026
DSCR — Debt Service Coverage Ratio — measures whether a property's income covers its own mortgage payment, with room to spare. It's the single number most rental-property lenders care about most, because it answers their core question directly: if the borrower disappeared tomorrow, would the property's rent alone still cover the loan?
The DSCR Formula
DSCR = Net Operating Income ÷ Annual Mortgage Payment
Both figures are annual. Mortgage payment here means principal + interest (the debt service).
A DSCR of 1.0 means the property’s NOI exactly covers the mortgage — zero cushion. Above 1.0 means there’s income left over after debt service; below 1.0 means the property can’t cover its own loan from rent alone.
Worked Example
Same property as our other guides — $200,000 purchase, $2,400/month rent, 20% down at 7% — with NOI of $14,640 and annual debt service of $12,773:
1.15x
$14,640 NOI ÷ $12,773 annual mortgage payment
This property produces about 15% more NOI than its mortgage requires — a real but thin cushion. If a vacancy or an unexpected repair pushes actual expenses above the built-in reserves, that margin disappears quickly.
What Counts as a Good DSCR
| DSCR | General read |
|---|---|
| 1.25+ | Strong — the standard most lenders and experienced investors screen for |
| 1.0 – 1.25 | Marginal — covers the mortgage, but with little room for surprises |
| Below 1.0 | Negative — rent alone doesn’t cover the loan; you’re subsidizing the mortgage from other income |
Why DSCR loans exist
A "DSCR loan" is a rental-specific mortgage product that qualifies the *property*, not the borrower — no personal income or employment verification required. Lenders instead require the property hit a minimum DSCR, commonly somewhere between 1.0 and 1.25, before they’ll fund the loan. This is a big part of why investors track DSCR closely even outside a formal lending context: it’s a preview of whether a property would even qualify.
Know your DSCR before you make an offer
RealtyDealScout calculates DSCR alongside cap rate, cash-on-cash return, and monthly cash flow for any property — so you know where you stand before talking to a lender.
DSCR vs. Cash-on-Cash Return
These two often move together but answer different questions. DSCR is a coverage ratio — it only asks whether income exceeds the mortgage payment, regardless of how much cash you put down. Cash-on-cash return asks how much you personally earn on your invested capital. A large down payment can push DSCR up dramatically (smaller loan, smaller required payment) while cash-on-cash return might barely move, or even fall, since you tied up more cash to get there.
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