Debt service coverage explained

The principle

A debt service coverage ratio divides a defined earnings or cash-flow measure by debt service. A common business analysis uses EBITDA against principal and interest, but lenders can adjust both parts. Taxes, capital expenditure, leases, distributions, and other obligations may appear in a different coverage measure or lender-specific calculation.

Put it into practice

Use the exact definition in the proposed agreement. For illustration, $150,000 of eligible annual cash flow divided by $100,000 of required annual debt service gives 1.50 times coverage. That simple result does not prove approval; the lender also considers business risk, reporting quality, and other requirements.

What people often miss

Calculate the ratio after adding the proposed financing and include all existing debt covered by the definition. An annual total can hide a difficult seasonal month, so inspect payment timing separately. Test a lower-earnings case and explain any adjustments. Do not apply one universal minimum to every lender, product, industry, and jurisdiction.

Build a ratio you can reproduce

Begin with a one-page calculation that another person can follow. Identify the period, the earnings or cash-flow definition and the payments included. BDC describes a common debt service coverage calculation as EBITDA divided by principal and interest, while also explaining that institutions may use different measures. The agreement's definition is the one to use when testing a contractual covenant.

Principal repayment is not an income-statement expense, so an interest expense line is not a complete debt schedule. Obtain repayment schedules for existing facilities and add the proposed facility. Keep historical results separate from forecasts, and show any permitted adjustments individually. A useful working paper links every number to a statement, a schedule or an explicit assumption instead of presenting an unexplained ratio.

Worked example: the same earnings, a new payment

A fictional service company has $210,000 of annual EBITDA. Its existing annual principal payments are $100,000 and interest payments are $20,000. Using only those inputs gives $210,000 divided by $120,000, or 1.75 times coverage. Suppose a proposed equipment loan adds $36,000 of annual principal and interest. Pro forma coverage becomes $210,000 divided by $156,000, approximately 1.35 times.

The owner expects the equipment to increase earnings but does not assume that benefit immediately. In a downside case, eligible earnings fall to $168,000, producing approximately 1.08 times coverage. If the fictional agreement required 1.25 times, the required numerator would be $195,000. The base case would have $15,000 of earnings headroom, while the downside case would miss that invented requirement by $27,000. This is scenario arithmetic, not a lending threshold or an approval forecast.

Passing the annual test does not fill every cash gap

A ratio summarizes a period; a business pays bills on dates. Imagine that the same company must buy materials in January but receives its largest customer payment in March. Its annual coverage calculation can remain unchanged while its February bank balance turns negative. Pair the ratio with a weekly or monthly cash forecast and an explanation of how working-capital needs will be funded.

BDC also describes a fixed charge coverage approach that deducts items such as unfunded capital expenditure and taxes from EBITDA. That illustrates why EBITDA is not the same as free cash. Do not copy a DSCR result into a fixed charge coverage field or assume that both formulas treat leases, taxes and owner distributions identically. Ask for the lender's worksheet and reconcile differences before making a borrowing decision.

• Do the numerator and denominator cover the same period and legal entities?
• Are balloon payments, lease obligations and existing facilities treated as the agreement requires?
• Which proposed earnings adjustments have actually been accepted?
• What happens after a slower quarter, a rate increase or a delayed customer payment?
• Who will update the calculation, and when must the lender receive it?

Work backward from coverage to payment headroom

Suppose a fictional business has $180,000 of lender-defined annual earnings and uses an illustrative coverage target of 1.25 times. Dividing $180,000 by 1.25 gives a $144,000 annual debt-service budget. If existing covered payments total $108,000, the calculation leaves $36,000 annually, equivalent to $3,000 per month.

Now reduce the earnings assumption by 20%, to $144,000. The same calculation produces a $115,200 debt-service budget and only $7,200 of annual headroom after existing payments. A relatively modest earnings decline can consume much of the room for another loan.

Payment headroom is not an approved loan amount. Translating it into principal requires a rate, repayment term, payment frequency and any final balance. Taxes, investment needs and seasonal cash shortages still need their own forecast. The 1.25 target here is invented; use the actual lender’s definition and requirement.

Source: BDC: Debt service coverage ratio

Your next-step checklist

• Lender’s exact numerator and denominator
• All relevant existing and proposed payments
• Support for permitted adjustments
• Seasonal and downside cash-flow analysis