DSCR is a screening relationship, not a universal approval rule. Different lenders define cash available for debt service differently and may include existing obligations, taxes, owner compensation, capital expenditure or other adjustments.
DSCR = cash available for debt service ÷ required annual principal and interest
Buyer-operator example for an illustrative GTA business
| Normalized SDE | $260,000 |
| Buyer compensation requirement | − $90,000 |
| Recurring capital expenditure | − $20,000 |
| Operating reserve | − $15,000 |
| Cash available for debt service | $135,000 |
| Annual debt service | $95,000 |
| Planning DSCR | 1.42x |
This model treats $90,000 as compensation for the buyer's labour before measuring the return available to service acquisition debt.
Replacement-manager example
If the buyer will not operate the company, replace the buyer compensation assumption with the fully loaded market cost of the seller's duties. Suppose a manager and retained sales responsibility cost $125,000 rather than $90,000. Cash available for debt service falls to $100,000 and DSCR falls to 1.05x. The same debt that looked plausible for an owner-operator becomes fragile for an investor.
Common DSCR mistakes
- Using seller-presented SDE without validating add-backs.
- Ignoring the owner's labour because it is not labelled payroll.
- Excluding recurring equipment replacement and working-capital needs.
- Using the initial interest rate without a higher-rate scenario.
- Counting hoped-for automation savings before implementation.
- Testing annual totals while ignoring seasonal cash shortages.
Reverse the equation
If sustainable cash available for debt service is $135,000 and your planning minimum is 1.35x, annual debt service should not exceed $100,000. Convert that payment into a loan amount using the actual proposed term and rate, then add the equity you can invest without exhausting reserves.
Compare coverage scenarios
Use the AndChill deal calculator to test debt payments and operator assumptions.
Annual coverage can hide a monthly cash crisis
A business can produce acceptable annual DSCR and still miss a payment. A seasonal GTA contractor might collect heavily from May through October while payroll, rent and debt continue through winter. Model cash monthly, not just annually. Start with opening cash, add realistic collections rather than invoiced revenue, subtract operating payments, taxes, capital spending and debt service, then identify the lowest cash point.
| Lowest projected cash before debt | $72,000 |
| Three months of debt payments | − $24,000 |
| Payroll and tax buffer | − $35,000 |
| True surplus at the low point | $13,000 |
The annual ratio may say “workable.” The monthly model says “one delayed customer could break it.” Both statements can be true.
Use three cases, not one optimistic answer
Build a base case from supported historical results, a downside case with lower gross profit and higher interest, and a replacement-operator case that prices the seller's labour. Do not count hoped-for automation savings until the workflow is live and measured. If the deal works only after every improvement succeeds, you are financing a turnaround while paying for a finished business.
Why DSCR matters beyond lender approval
Debt service is contractual; revenue is not. DSCR measures the distance between those two realities. It protects the buyer's salary, the company's ability to replace equipment and the room needed to survive a weak quarter. A lender may accept one definition of coverage, while the buyer should use a stricter version that includes the economic costs the business cannot avoid.
It also exposes pricing problems. If reasonable assumptions produce weak coverage, the answer may be a lower purchase price, more equity, a seller note with different timing or no transaction. DSCR is therefore not just a financing ratio. It is a bridge between valuation, operating risk and deal structure.
Sources and methodology
Pressure-test the debt before the offer.
Bring the recast, proposed financing and intended owner role. We will map the assumptions that move coverage.
Book a free call →Educational information only. Lender definitions, underwriting requirements, rates and terms vary. Obtain financing, accounting and legal advice.