Debt-service coverage is the one ratio a lender will not let a sponsor talk their way around. It is also the easiest to make look better than it is, which is why you should be able to rebuild it yourself.
The formula is short. Debt-service coverage ratio (DSCR) equals net operating income divided by annual debt service. Net operating income (NOI) is what the property earns after operating expenses and before the loan; debt service is the year’s principal and interest.
Put numbers on it. An illustrative 24-unit building in Southern California nets $412,000 a year. Its $3,300,000 loan, at 6.25% fixed and amortizing over 30 years, costs about $244,000 a year. Coverage is $412,000 divided by $244,000, or 1.69. For every dollar owed to the lender, the building earns $1.69.
That 1.69 looks solid. Whether it is depends on five inputs, and each one is worth testing on its own.
Is the NOI Real?
The numerator is where optimism hides. NOI in an offering memorandum is often a projection: rents after renovation, expenses after the new manager takes over, vacancy at a level the building has not yet achieved. Trailing NOI, taken from twelve months of actual statements, is the figure a lender uses and the one you should start from.
Suppose the $412,000 includes $30,000 that will not recur: an insurance premium quoted before the market repriced, or a year in which no unit turned over. Strip it out and NOI is $382,000, and coverage on the same loan is 1.57. Still healthy, but the sponsor’s number and the honest number differ by more than a tenth of a point before anything has gone wrong. Our guide to reviewing multifamily operating expenses covers where those adjustments usually sit.
Interest-Only or Amortizing?
The denominator can be shrunk without changing the loan amount. Make the $3,300,000 loan interest-only and annual debt service falls to about $206,000, because no principal is being repaid. Coverage jumps to 2.00 on the same NOI.
Nothing about the building improved. The loan balance simply stays at $3,300,000 instead of falling, and when the interest-only period ends, typically after two to five years, the payment steps up to the amortizing figure and coverage drops back. When a sponsor quotes a coverage ratio, ask whether it is on the interest-only payment or the full one, and what year the full one begins.
What Happens at a Rate Reset?
On a fixed-rate loan the denominator is a known quantity until maturity. On a floating-rate loan it is not, and coverage should be tested at a rate meaningfully above today’s.
Move the rate on this loan from 6.25% to 8.25%. Amortizing debt service rises to about $297,000 and coverage falls from 1.69 to 1.38. Combine that with the honest NOI of $382,000 and it is 1.29. Two ordinary adjustments have moved the ratio from comfortable to within sight of the lender’s floor, and neither of them is a recession.
Are Capital Reserves Counted?
Lenders subtract a replacement reserve from NOI before they compute coverage, commonly $250 to $300 per unit per year. On 24 units that is roughly $7,000, which nudges the ratio down to about 1.66 and is hardly worth mentioning.
The reason to mention it anyway is that the lender’s reserve and the building’s needs are different numbers. A 1970s roof on 24 units can cost $90,000 or more, and that money comes from the same cash that services the loan and pays distributions. A coverage ratio of 1.69 tells you the building can pay its lender; it does not tell you whether it can pay its lender and replace the roof in the same year. The capital plan in the offering answers that, and it is worth reading alongside the ratio.
Where Is the Covenant Floor?
Most loan agreements set a minimum coverage, often 1.20 or 1.25, tested annually or quarterly on trailing income. Falling below it does not mean default. It usually means a cash sweep, where the lender traps operating cash until the ratio recovers, which for you means distributions stop.
Translate the floor into an NOI. At 1.25 on the amortizing payment of $244,000, this building can let NOI fall to $305,000, about 26% below today, before the sweep triggers. After the rate reset to 8.25%, the floor NOI is roughly $371,000, and the cushion is 10%. That second number is the one to know, because 10% is a couple of long vacancies and an insurance renewal.
Sponsors who borrow less start this exercise from a different place. On a building carrying sub-50% loan-to-value on every property, the debt service is small relative to NOI, so even a bad year on the numerator and a reset on the denominator tend to leave the ratio above the floor. Coverage is not a target we manage to; it is what falls out of keeping the loan small.
Three Questions Investors Actually Ask
Is 1.25 a good coverage ratio?
It is the minimum most lenders will accept, which makes it the floor, not a goal. A deal underwritten at 1.25 on projected NOI has no room for the projection to miss. On stabilized multifamily with a fixed rate, 1.50 or better on trailing income is where the ratio starts to absorb surprises rather than transmit them.
Why does the sponsor’s ratio differ from the lender’s?
Usually three reasons, all visible above: the sponsor uses projected NOI where the lender uses trailing; the sponsor quotes the interest-only payment where the lender sizes on the amortizing one; and the lender deducts a replacement reserve. Ask for the ratio on the lender’s basis. If the sponsor cannot produce it, they have not seen the lender’s underwriting.
Does coverage tell me what my distributions will be?
Only the ceiling. On the illustrative building, $412,000 of NOI less $244,000 of debt service leaves $168,000 before reserves, capital projects, and sponsor fees. What reaches you is what remains after those, in the order the operating agreement sets. Coverage tells you the lender is paid with room to spare; the waterfall in the offering documents tells you what happens to the rest.
Want to see the coverage ratio on a lightly levered Southern California building, computed the lender’s way? Talk to VisionWise Capital →
This content is for informational purposes only and does not constitute investment, legal, or tax advice. Real estate transactions and private placements involve significant risk, including potential loss of principal. Always consult qualified legal, financial, and tax professionals before making investment decisions.
Related Reading
- How Interest Rates Affect Private Real Estate Debt
- Multifamily Capital-Expenditure Due Diligence
- How to Test Multifamily Operating Assumptions
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