CRE glossary
Debt Service Coverage Ratio (DSCR)
Debt Service Coverage Ratio (DSCR) measures how many times a property's net operating income (NOI) covers its annual debt service (principal + interest). It is the primary lender test for whether cash flow can service the loan: a DSCR of 1.25x means NOI is 25% larger than the mortgage payment.
Formula
DSCR = Net Operating Income (NOI) ÷ Annual Debt Service (principal + interest)
How DSCR Is Used in Underwriting
DSCR is the ratio commercial lenders use to size and stress-test a loan. Because it compares annual NOI to annual debt service (the full principal-and-interest payment, not just interest), it answers a single question: does the property throw off enough cash to make its loan payments with a margin of safety? A DSCR above 1.0x means NOI exceeds debt service; below 1.0x means the property does not cover its own payments and the sponsor must fund the shortfall.
- •Loan sizing: lenders set a minimum DSCR (e.g., 1.25x) and solve for the largest loan whose debt service NOI can cover at that ratio — often the binding constraint alongside LTV.
- •Covenant testing: many loans carry an ongoing DSCR covenant tested quarterly or annually; a breach can trigger cash sweeps or default.
- •Underwriting stress: analysts recompute DSCR at higher exit or refinance rates to confirm the deal still covers debt if rates rise.
Why DSCR Matters and What Drives It
DSCR sits at the intersection of income and financing, so it is sensitive to both. NOI in the numerator is defined before debt service and before capital expenditures, income taxes, and depreciation — using the wrong income line (e.g., subtracting reserves or leasing costs, or including below-the-line items) is the most common way DSCR is misstated. The denominator must be the full annualized debt service; on an interest-only loan, debt service is interest only, which flatters DSCR versus the same loan amortizing.
- •Higher NOI, lower interest rates, longer amortization, or interest-only periods all raise DSCR.
- •DSCR is a coverage ratio, not a leverage ratio — pair it with LTV/LTC and debt yield for a full credit picture.
- •Lender-underwritten DSCR often uses a stressed or 'underwriting' interest rate and normalized NOI, so it can differ from the DSCR on actual in-place numbers.
Worked example
A stabilized multifamily property generates $1,000,000 of net operating income. Its permanent loan carries an annual debt service (principal + interest) of $800,000. DSCR = $1,000,000 ÷ $800,000 = 1.25x — NOI covers debt service 1.25 times, leaving a 25% cushion. If the lender requires a 1.25x minimum, this loan is exactly at the line; if in-place NOI fell to $920,000, DSCR would drop to 1.15x and fail the test.
Frequently asked questions
- What is a good Debt Service Coverage Ratio (DSCR)?
- For stabilized commercial real estate, lenders typically require a minimum DSCR of 1.20x–1.35x, with 1.25x a common benchmark. Above 1.25x signals comfortable coverage; below 1.0x means the property does not generate enough NOI to cover its loan payments. Riskier asset classes or transitional deals often demand higher minimums.
- Does DSCR use NOI before or after capital expenditures?
- The standard DSCR uses net operating income (NOI), which is calculated before debt service, capital expenditures, income taxes, and depreciation. Some conservative lenders underwrite a stressed or 'debt service coverage after reserves' figure by subtracting replacement reserves or capex, which produces a lower, more conservative ratio — always confirm which definition a lender is using.
- What is the difference between DSCR and debt yield?
- DSCR divides NOI by annual debt service, so it depends on the interest rate and amortization of the specific loan. Debt yield divides NOI by the loan amount and ignores rate and amortization entirely, giving lenders a financing-neutral measure of leverage. Lenders use both: DSCR tests payment coverage, debt yield tests how quickly they'd recover principal.
Keep exploring