Calculator Panel
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Enter your values above and click Calculate.
What This Calculator Does
This calculator computes the Debt Service Coverage Ratio (DSCR) for rental properties, letting you audit cash flow safety margins and lender feasibility thresholds.
How to Use This Calculator
Enter your property's Net Operating Income (NOI) and the annual debt service (mortgage payment). Click Calculate to determine your DSCR and see bank feasibility analysis.
How the Calculation Works
The underlying math engine processes your inputs using exact formulas. This systematic approach ensures professional, institutional-grade calculation precision:
Mathematical Formula
Formula Legend:
- · Net Operating Income = Gross rental income minus all property operating expenses (taxes, insurance, management, repairs).
- · Annual Debt Service = total annual mortgage principal and interest obligations.
Practical Example
A commercial or residential rental property generates $45,000 in Net Operating Income and has an annual mortgage debt service of $36,000:
Step-by-Step Mathematical Walkthrough:
- 1 Net Operating Income (NOI) = $45,000.
- 2 Annual Debt Service = $36,000.
- 3 DSCR = $45,000 / $36,000 = 1.25.
- 4 This means the property's operating income exceeds its debt obligations by exactly 25.0%, meeting the standard lender approval benchmark of 1.25.
Important Assumptions & Notes
- Operating expenses do not include mortgage payments or capital expenditures.
- The debt service includes all annual interest and principal payments.
- Income is gross realized collections after subtracting vacancy allowances.
Common Mistakes or Considerations
- Including mortgage payments in operating expenses before calculating NOI, which double-counts debt service and ruins the DSCR calculation.
- Failing to account for vacancy rates, which lowers your actual realized NOI and can push your DSCR below bank approval guidelines.
Frequently Asked Questions
What is a good DSCR for a rental property?
Lenders typically require a minimum DSCR of 1.20 to 1.25 for loan approvals. A ratio of 1.50 or higher is considered low risk and represents excellent cash flow safety margins.
Can I get a loan with a DSCR below 1.0?
A DSCR below 1.0 means the property's income is insufficient to cover the mortgage. Lenders will rarely approve loans with DSCR < 1.0 without additional collateral or higher down payments.
How can I improve my property's DSCR?
You can improve DSCR by increasing rental income, reducing operating expenses, or making a larger down payment to lower the financed debt service.