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What is the debt service coverage ratio?
The debt service coverage ratio (DSCR) compares a rental property's net operating income with the mortgage payment on that property. Real estate investors use it to see whether the rent covers the debt before a broker reviews a business-purpose loan. The ratio is an estimate, not a loan approval.
What Does DSCR Measure?
DSCR measures whether a property generates enough rental income to cover its debt obligations. It's calculated by dividing Net Operating Income (NOI) by total debt service.
The DSCR Formula
DSCR = Net Operating Income ÷ Total Debt Service
DSCR equals net operating income divided by debt service. Net operating income is gross rent minus operating expenses such as taxes, insurance, HOA dues, management, and maintenance. Debt service is the principal-and-interest payment used in the scenario. Count taxes and insurance only once, either in expenses or inside the payment.
Net Operating Income (NOI)
NOI is your property's annual rental income minus operating expenses:
- Gross rental income
- Minus: Vacancy allowance
- Minus: Property taxes
- Minus: Insurance
- Minus: Property management
- Minus: Maintenance and repairs
Total Debt Service
This is your annual mortgage payment (principal + interest).
What DSCR Ratio Do You Need?
- 1.50+ (Strong) - Generally stronger pricing potential, subject to lender guidelines
- 1.25-1.49 (Good) - May fit many DSCR program ranges
- 1.10-1.24 (Acceptable) - May fit with stronger reserves or compensating factors
- 1.00-1.09 (Tight) - Limited options, higher rates
- Below 1.00 (Poor) - Does not qualify for most DSCR programs
Why DSCR Matters
DSCR programs are commonly reviewed by real estate investors because:
- Programs generally focus on property cash flow, reserves, credit profile, and lender guidelines
- Business-purpose investment property scenarios may be reviewed without owner-occupied consumer-loan underwriting
- Can finance multiple investment properties
- Personal debt-to-income may be treated differently than in owner-occupied mortgage programs
- Available for various property types
Calculate Your DSCR
Use the free DSCR calculator to estimate your Debt Service Coverage Ratio: