DSCR: How Lenders Decide If Your Deal Works
DSCR stands for Debt Service Coverage Ratio. It's the single most important number in lender underwriting for a business acquisition — a simple ratio that tells a lender whether the business generates enough cash to pay back the debt used to buy it.
Every lender who finances a business acquisition runs this calculation. If your DSCR comes in too low, the deal doesn't get funded — regardless of everything else.
The Formula
DSCR = Net Operating Income ÷ Total Annual Debt Service
Net operating income (for SBA lenders) = SDE minus a market-rate replacement manager salary, minus taxes
Total annual debt service = all loan payments: SBA loan P&I + seller note payments + any other debt
A DSCR of 1.0× means the business earns exactly enough to cover its debt. A DSCR of 1.25× means the business earns 25% more than required — the standard SBA minimum. Most lenders prefer 1.35× or higher to have a comfort buffer.
Example: Calculating DSCR on a $700K Acquisition
Business SDE: $180,000
Management salary replacement: $60,000
Estimated taxes: $15,000
Net operating income: $105,000
SBA loan: $560,000 at 10% over 10 years → monthly payment ~$7,400 → annual: $88,800
Seller note: $70,000 on standby (no payments in year 1)
Total debt service (year 1): $88,800
DSCR = $105,000 ÷ $88,800 = 1.18×
This deal would likely be declined at most SBA lenders (below 1.25×). To fix it: reduce the loan amount (larger down payment), negotiate a lower price, or require a longer loan term.
What Counts as Debt Service
Lenders include all annual loan payments — principal and interest combined. For an acquisition, that includes:
- The SBA 7(a) loan P&I payment
- Any seller note payments (if not on standby)
- Earnout payments if structured as guaranteed minimums
- Any existing debt the business is carrying post-close
The Manager Salary Haircut
Lenders don't count the full SDE as available for debt service. They subtract what a market-rate hired manager would cost to run the business, since not every buyer will operate the business full-time forever. This haircut varies by business type but is often $50,000–$90,000. It's the most common source of confusion when buyers calculate DSCR themselves and get a higher number than the lender does.
How to Improve DSCR
- Increase down payment — reduces the SBA loan amount and thus annual debt service
- Negotiate a lower purchase price — reduces the total financed amount
- Structure seller note on standby — defers seller note payments, reducing year-1 debt service
- Extend loan term — 10 years vs. 7 years reduces annual P&I payments significantly
Model these variables in the AcquireCalc deal calculator before approaching lenders to understand your DSCR before anyone else does.
Deal-Model Context
DSCR translates acquisition optimism into lender math. A buyer may like the business, the seller may accept the offer, and the valuation may look reasonable, but the deal still fails if recurring cash flow cannot comfortably cover scheduled debt payments.
In the model, calculate annual debt service for every required payment: SBA loan, conventional debt, seller note, equipment financing, assumed debt, and any deferred payment that is not truly contingent. Compare that total to normalized SDE or EBITDA.
Buyer Diligence Questions
A thin DSCR should trigger a lower price, longer amortization, larger seller note, standby period, earnout, or additional buyer equity. It should not be solved by using inflated add-backs or ignoring necessary working capital.
This term connects to SBA loans, seller notes, add-backs, and working capital. Ask what earnings figure the lender will use, whether the seller note is included in debt service, and how much cushion remains after buyer salary and capital needs.
Practical Review Checklist
Before relying on DSCR: How Lenders Decide If Your Deal Works in an acquisition model, turn the term into a written assumption. State what source document proves it, what dollar amount or risk category it changes, and whether it affects purchase price, cash at closing, debt service, working capital, legal exposure, or post-close operations. That step makes the concept auditable instead of merely descriptive.
For buyer diligence, collect at least one primary source document, one seller explanation, and one downside case. If the source document is missing, keep the assumption out of the base case. If the downside case changes DSCR, working capital, customer retention, or transition risk enough to threaten closing, address it through price, seller financing, escrow, earnout, indemnity, or a closing condition.
When using AcquireCalc, enter the verified number first, then test the seller's number and a conservative number. The spread between those cases shows whether DSCR: How Lenders Decide If Your Deal Works is a minor definition, a negotiation point, or a risk that should change the structure of the deal.
Related Terms
- SBA 7(a) loan — the primary loan whose payments go into debt service
- Seller financing — structuring seller note on standby affects DSCR calculation
- Deal stack — the full picture of financing that determines debt service
Sources & Further Reading
- SBA SOP 50 10 — official DSCR calculation methodology used by SBA lenders