Operator Calculators

Debt Service Coverage Ratio Calculator

Estimate whether business cash flow is sufficient to cover annual debt payments. Use this tool to evaluate acquisition financing, refinancing, and debt capacity.

Calculate debt service coverage

Annual EBITDA / Cash Flow Available for Debt Service ($)

Annual Principal Payments ($)

Annual Interest Payments ($)

Owner Add-Back / Normalized Cash Flow Adjustment ($)

Maintenance Capex Reserve ($)

Target DSCR

Adjusted Cash Flow

$475,000

Annual Debt Service

$310,000

DSCR

1.53x

Cash Flow Cushion

$165,000

Max Debt Service at Target DSCR

$380,000

Remaining Debt Capacity

$70,000

Required Cash Flow for Current Debt

$387,500

Coverage Cushion %

22.6%

Coverage appears healthy, assuming cash flow is stable and recurring.

What is DSCR?

Debt service coverage ratio, or DSCR, measures how many times a business can cover its required debt payments from available operating cash flow.

A DSCR of 1.00x means cash flow exactly equals debt service. A DSCR below 1.00x means the business does not generate enough cash flow to cover scheduled debt payments. Lenders often want a cushion above 1.00x because cash flow can fluctuate.

Formulas

Adjusted Cash Flow = EBITDA + Add-Backs − Maintenance Capex Reserve
Annual Debt Service = Principal Payments + Interest Payments
DSCR = Adjusted Cash Flow ÷ Annual Debt Service
Cash Flow Cushion = Adjusted Cash Flow − Annual Debt Service
Max Debt Service at Target DSCR = Adjusted Cash Flow ÷ Target DSCR
Required Cash Flow = Annual Debt Service × Target DSCR

Example

Assume a business generates $500,000 of annual EBITDA, has $310,000 of annual principal and interest payments, and reserves $25,000 for maintenance capex.

Adjusted cash flow is $475,000. Dividing that by $310,000 of annual debt service produces a DSCR of approximately 1.53x.

For an owner-operator or acquisition buyer, that cushion matters. A deal can look attractive on purchase multiple, but weak debt coverage can leave very little margin for payroll surprises, inventory needs, revenue softness, or equipment issues.

Common mistakes

Using EBITDA without reserving for maintenance capex.
Assuming cash flow will remain stable after an acquisition.
Ignoring working capital needs when sizing debt.
Focusing on purchase multiple while underestimating debt structure risk.
Using optimistic add-backs that may not convert into actual cash flow.

New to Approach?

Start with the Core Frameworks.

Approach is best experienced through its core frameworks. Begin with the five foundational frameworks that establish the philosophy behind every operating decision, note, and calculator on the site.

Start Here →