DSCR measures a borrower's ability to cover debt payments from operating cash flow: net operating income divided by total debt service (principal plus interest). A DSCR of 1.25 means income covers debt payments with 25% to spare.
Why It Matters
DSCR is the primary underwriting metric for commercial real estate, corporate, and project finance lending — it directly answers the question every lender actually cares about (can this borrower generate enough cash to pay us back?) in a way that collateral value (LTV) alone cannot, especially for income-producing assets where cash flow, not just asset value, drives repayment capacity.
How It Works in Practice
- 1Net Operating Income (NOI) = revenue − operating expenses (excluding debt service and, typically, depreciation)
- 2Total debt service = all scheduled principal and interest payments over the measurement period
- 3DSCR = NOI ÷ total debt service
- 4Lenders set minimum DSCR covenants (commonly 1.20-1.35x for commercial real estate) that trigger default or remedy provisions if breached
Common Pitfalls
DSCR calculated on trailing (historical) cash flow can look strong right before a tenant vacancy, lease rollover, or demand shift causes it to deteriorate quickly — forward-looking DSCR stress testing matters as much as the trailing number
Different lenders define NOI slightly differently (treatment of capital reserves, management fees, one-time items), so DSCR figures aren't always directly comparable across term sheets
A DSCR covenant breach doesn't necessarily mean imminent default, but it does typically trigger lender rights (cash sweeps, additional reporting, or technical default) that materially change the borrower relationship