Debt Service Coverage Calculator
Calculates the Debt Service Coverage Ratio (DSCR) for an income-producing property. Lenders use this ratio to assess whether a property generates enough income to cover its loan payments.
About this calculator
The Debt Service Coverage Ratio (DSCR) measures how many times a property's net operating income (NOI) can cover its annual debt obligations. The formula is: DSCR = Net Operating Income / Total Debt Service. A DSCR above 1.0 means the property generates more income than needed to service its debt. Most commercial lenders require a minimum DSCR of 1.20 to 1.25, meaning income must be 20–25% greater than debt payments. A DSCR below 1.0 signals negative cash flow — the property cannot cover its own loan payments, which is a red flag for lenders and investors alike.
How to use
Suppose a rental property generates $60,000 per year in net operating income (NOI), and the annual mortgage and loan payments (total debt service) equal $48,000. Apply the formula: DSCR = $60,000 / $48,000 = 1.25. This means the property earns $1.25 for every $1.00 of debt obligation — a healthy ratio that most lenders will approve. If the NOI dropped to $45,000, the DSCR would fall to 0.9375, indicating the property cannot fully cover its debt service.
Frequently asked questions
What is a good debt service coverage ratio for a rental property?
Most commercial lenders consider a DSCR of 1.20 or higher to be acceptable, with 1.25 being a common minimum threshold. A ratio above 1.25 provides a comfortable cushion against vacancy or unexpected expenses. Ratios below 1.0 indicate the property cannot cover its debt from operating income alone, making financing very difficult to secure.
How does net operating income affect the debt service coverage ratio?
Net operating income (NOI) is the numerator in the DSCR formula, so any increase in NOI directly improves the ratio. NOI is calculated as gross rental income minus operating expenses (excluding debt service). Raising rents, reducing vacancies, or cutting operating costs all boost NOI and therefore improve your DSCR, making the property more attractive to lenders.
Why do lenders use the debt service coverage ratio instead of just checking profit?
DSCR focuses specifically on whether cash flow from the property can service the debt, which is the lender's primary concern. Simple profit figures can include non-cash items or one-time gains that don't reflect recurring cash availability. DSCR gives lenders a standardized, property-level metric that is easy to compare across different loan applications and property types.