Interest Rate Exposure Calculation

Commercial Real Estate DSCR Calculator

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Understanding the Debt Service Coverage Ratio (DSCR)

In commercial real estate (CRE) and business lending, the Debt Service Coverage Ratio (DSCR) is a critical metric used by lenders to determine if a property or business generates enough income to cover its debt obligations. Essentially, it measures the "safety margin" for a loan.

How to Calculate DSCR

The formula for DSCR is straightforward but requires accurate financial data:

DSCR = Net Operating Income (NOI) / Annual Debt Service
  • Net Operating Income (NOI): This is your gross rental income minus all necessary operating expenses (property taxes, insurance, maintenance, utilities). It excludes mortgage payments and depreciation.
  • Annual Debt Service: The total amount of principal and interest payments made on all loans for the property or business within one year.

What is a Good DSCR?

Lenders have different risk appetites, but general benchmarks in the commercial lending industry include:

DSCR Value Meaning
Below 1.0 Negative Cash Flow (Property does not cover its debt).
1.0 to 1.15 Tight Cash Flow (Higher risk for lenders).
1.20 to 1.35 Standard Industry Benchmark (Typical requirement for CRE loans).
Above 1.50 Strong Cash Flow (Preferred by lenders, may qualify for lower rates).

A Realistic DSCR Example

Imagine you are looking at a multi-family apartment building with the following financials:

  • Gross Income: $250,000
  • Operating Expenses: $100,000
  • Monthly Mortgage Payment: $10,000

First, calculate the NOI: $250,000 – $100,000 = $150,000.

Next, calculate the Annual Debt Service: $10,000 * 12 = $120,000.

Finally, divide NOI by Debt Service: $150,000 / $120,000 = 1.25 DSCR. This meets the standard requirement for most commercial banks.

function calculateDSCR() { var noi = parseFloat(document.getElementById('noi_input').value); var debtService = parseFloat(document.getElementById('debt_service_input').value); var resultBox = document.getElementById('result_display'); var dscrValueText = document.getElementById('dscr_value'); var dscrInterpretation = document.getElementById('dscr_interpretation'); if (isNaN(noi) || isNaN(debtService) || debtService <= 0) { alert('Please enter valid positive numbers for both fields.'); return; } var dscr = noi / debtService; var formattedDSCR = dscr.toFixed(2); dscrValueText.innerHTML = formattedDSCR; resultBox.style.display = 'block'; if (dscr = 1.0 && dscr = 1.2 && dscr < 1.5) { dscrInterpretation.innerHTML = "Healthy Cash Flow: Meets Bank Standards"; dscrInterpretation.style.backgroundColor = "#e8f5e9"; dscrInterpretation.style.color = "#2e7d32"; dscrValueText.style.color = "#2e7d32"; } else { dscrInterpretation.innerHTML = "Excellent Cash Flow: Low Risk"; dscrInterpretation.style.backgroundColor = "#e3f2fd"; dscrInterpretation.style.color = "#1565c0"; dscrValueText.style.color = "#1565c0"; } resultBox.scrollIntoView({ behavior: 'smooth', block: 'nearest' }); }

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