Debt Service Coverage Ratio (DSCR)
Debt Service Coverage Ratio (DSCR) is the coverage ratio a lender uses to test whether an acquired business generates enough cash to make its loan payments, calculated as annual cash flow available for debt service divided by total annual principal and interest, so $480,000 of available cash flow against $340,000 of annual debt service is a DSCR of about 1.41x. SBA 7(a) acquisition lenders generally underwrite to a business-level DSCR minimum of 1.15x, and most bank credit policies want 1.25x or better before a file goes to committee.
Also called debt service coverage, debt coverage ratio, DSC, debt service cover ratio · Last updated 2026-08-07 · All 24 terms
How a lender builds the ratio on an acquisition
The denominator is the straightforward half: total annual principal and interest on every piece of debt the business will carry after closing, including the acquisition loan, any equipment or real estate note, and any seller note not sitting on standby.
The numerator is where deals are won and lost. A lender starts from recast cash flow — for a small business, SDE — and then removes what the business must pay before it can pay the bank. The common build is SDE, less a reasonable compensation draw for the new owner, less an allowance for maintenance capital expenditures, less any taxes not otherwise financed, equals cash flow available for debt service.
Worked example. A services business recasts to $600,000 of SDE. The buyer takes a $120,000 salary. The business is asset-light and the lender allows no further deduction for maintenance capital expenditures, so cash flow available for debt service is $480,000.
The financing is a $1,800,000 SBA 7(a) loan at 10.5 percent over 10 years, plus a $200,000 seller note at 8 percent over 5 years that amortizes from month one — it is not on standby, so it counts in the denominator in full.
The SBA loan amortizes at $24,288 per month, or $291,460 per year. The seller note amortizes at $4,055 per month, or $48,663 per year. Total annual debt service is $340,123.
DSCR is $480,000 divided by $340,123, or 1.41x. That clears both the 1.15x SBA floor and a 1.25x bank policy with room, which is what a lender means by a bankable deal.
The thresholds, and the variance behind them
1.15x is the SBA 7(a) business-level minimum most lenders cite from SOP 50 10, and it functions as a floor rather than a target. A file landing at 1.16x gets scrutinized line by line.
1.25x is where most conventional bank credit policies for small-business acquisition lending sit, and where an SBA lender is comfortable rather than nervous.
1.50x and above reads as a strong file and gives the borrower leverage on rate, term, collateral and the scope of the personal guarantee.
Below 1.15x the answer is a smaller loan, a larger equity injection, more seller paper on standby, or a lower price. There is no fifth option.
Definitions vary considerably more than thresholds do, and that variance is worth pinning down early with whoever is actually underwriting the deal. Some lenders build the numerator from SDE less an owner draw, as above; some start from EBITDA and add nothing further; some deduct a fixed capital expenditure reserve while others deduct actual historical capex. Many also run a global DSCR that folds the buyer's personal debt service — mortgage, auto, student loans — and household living requirement into the test against business cash flow plus outside household income. A deal that passes at the business level and fails globally is a common outcome, and the broker usually finds out about it late.
One further convention worth knowing: most lenders run DSCR on a historical basis using the seller's trailing twelve months, not on the buyer's projections. Projected synergies do not clear a coverage test.
DSCR sets the ceiling on the price, not the other way round
Run backwards, the ratio produces the most useful number in a small-deal conversation: the highest price the deal can actually finance.
Take the same $480,000 of cash flow available for debt service. At a 1.25x policy minimum, the maximum annual debt service the deal supports is $480,000 divided by 1.25, or $384,000 — about $44,000 more than the $340,123 in the example above. At 10.5 percent over 10 years, $384,000 of annual debt service supports roughly $2,370,000 of principal.
So on this business, with this buyer's salary requirement and these rates, debt capacity is about $2.37 million. Add the buyer's equity injection and any seller paper on full standby and the real price ceiling appears. If the seller wants $3.2 million for a business producing $600,000 of SDE, the arithmetic says the buyer brings materially more cash, the seller carries materially more paper on standby, or the price moves. That conversation costs far less in week one than in week ten.
Note how sensitive the ceiling is to interest rates. The same $384,000 of annual debt service supports substantially less principal as rates rise, which is why price expectations formed in a low-rate year do not survive into a high-rate one even when nothing about the business has changed.
What brokers and buyers get wrong
Assuming the lender accepts the recast as presented. The lender re-underwrites the add-backs. Depreciation, amortization and interest expense come back reliably. Documented owner compensation and owner benefits generally do. Personal vehicle, travel and meals often do, with documentation. Undocumented cash, 'one-time' expenses that appeared three years running, and anything supported only by the seller's word usually do not. Every disallowed add-back comes straight out of the numerator: at a 1.25x hurdle, $50,000 of disallowed add-backs removes $40,000 of annual debt service capacity ($50,000 divided by 1.25), which at 10.5 percent over ten years is roughly $247,000 of loan principal the deal can no longer carry — and, at a 3.0x SDE multiple, $150,000 of price.
Forgetting the new owner's salary. A model that runs DSCR off raw SDE with no owner draw describes a business that feeds nobody, and no lender will underwrite it that way.
Treating a seller note as free. A note on full standby — no principal and no interest paid for a stated period — is excluded from the denominator during that period. A note that merely sits subordinated to the bank while continuing to amortize is in the denominator in full. Those are two different deals and the letter of intent should say which one it is.
Ignoring the step-up. Interest-only periods and standby periods end. A deal covering at 1.4x in year one and dropping to 1.1x in year three, when a seller note begins amortizing, was never a 1.4x deal. The ratio has to be run for every year of the combined note schedule, not just the first.
Confusing DSCR with the SDE multiple. The two constrain each other. A price justified by a 3.5x SDE multiple that produces a 1.05x DSCR is not a financeable price, and it is the multiple that has to move to meet the coverage test rather than the reverse.