Credit analysis
How to calculate DSCR for a business loan
The debt service coverage ratio step by step: the numerator, the denominator, business versus global DSCR, pro forma coverage and a worked example.
The debt service coverage ratio is the number a commercial credit decision most often turns on. It compares the cash a borrower generates with the payments its debt requires, and a policy minimum, commonly set somewhere above one, says how much cushion the lender demands. The ratio is simple to state and easy to compute differently, which is why two analysts can read the same borrower and reach different coverage.
This guide sets out the calculation as business lenders practice it: what goes in the numerator, what goes in the denominator, how the business ratio differs from the global one, how a proposed loan is tested pro forma, and the places where the definition decides the answer. The definitions themselves are the lender’s.
The ratio and a worked example
DSCR divides cash flow available for debt service by total debt service for the same period. The numerator and the denominator are each a defined quantity, and every disagreement about a borrower’s coverage is a disagreement about one of the definitions. The table shows a business whose historical coverage is comfortable and whose pro forma coverage, with a proposed loan added, falls to a figure the policy minimum will judge.
| Line | Business | Global |
|---|---|---|
| Cash flow available for debt service | $620,000 | $780,000 |
| Existing annual debt service | $240,000 | $330,000 |
| Proposed annual debt service | $150,000 | $150,000 |
| Total debt service | $390,000 | $480,000 |
| Historical DSCR, existing debt only | 2.58 times | 2.36 times |
| Pro forma DSCR, with the proposed loan | 1.59 times | 1.63 times |
The example is arithmetic, not a verdict. Cash flow of $620,000 against total debt service of $390,000 is coverage of 1.59 times. Whether 1.59 times clears the lender’s minimum, and whether the numerator was built on the right adjustments, are the questions the rest of this guide addresses.
Building the numerator
For a business the numerator usually begins with net income or earnings before taxes, adds back interest expense, because debt service is measured against earnings before it, and adds back depreciation, amortization and other non-cash charges. Policy then subtracts what the business must pay before its lenders: income taxes, distributions to owners that are not discretionary, and in stricter definitions a maintenance level of capital expenditure. What remains is the cash flow available for debt service.
Adjustments beyond the non-cash charges, the add-backs a borrower or a broker proposes for one-time costs or owner perquisites, belong in the numerator only with documentation and within policy. The guide on add-backs covers them. The point here is that an add-back raises coverage by exactly its amount, so a weak one buys coverage the business does not have.
Building the denominator
Total debt service is the sum of principal and interest payments due in the period on every obligation the borrower carries, plus the proposed loan at its contractual payment. Interest-only periods, balloon maturities and seasonal payment schedules are stated as they will be paid in the measurement year, with the balloon tested separately. Lines of credit are included at interest and, where policy requires, at an assumed amortization of the outstanding balance.
The denominator is where bank statements earn their place. A recurring payment on the statement that the debt schedule omits is debt service, and a merchant cash advance remitted daily is the obligation most often missing from the schedule.
Business DSCR and global DSCR
Business DSCR tests the operating company on its own. Global DSCR adds the owners and guarantors: their personal cash flow after living expenses and taxes, their rental properties, their other entities, and all of their personal and guaranteed obligations. The global ratio describes the whole relationship the lender is lending into. The business ratio describes whether the company stands on its own.
Both are read. A business ratio below the minimum and a global ratio above it says the guarantor is carrying the credit, which is a decision the lender should make knowingly rather than discover in the global figure.
Testing the proposed loan
Pro forma DSCR adds the proposed loan’s annual payment to the denominator and, where the loan refinances existing debt, removes the payments it retires. Where the loan funds something that changes the numerator, an acquisition or an expansion, the projected cash flow is a separate case from the historical one and is labeled as a projection.
A downside case is the companion: the same calculation with revenue or margin reduced by a stated amount, to show how much of the cushion a bad year consumes. Neither the pro forma nor the downside figure determines a borrowing amount. They show whether a proposed structure holds under stated assumptions.
DSCR in SpreadSpace
SpreadSpace reads debt service coverage off the spread for the business, each guarantor and the global relationship, with each ratio opening into the rows that produce it. The analyst enters the proposed annual debt service to produce a pro forma ratio with the assumptions visible, and the add-backs a credit officer configures are applied on every spread, each shown beside the reported line it adjusts with its period and source document.
Recurring payments found in the bank statements are followed beside the disclosed debt schedule, and the finalized figures reach the origination system in its own account codes.