Underwritten DSCR is the debt service coverage ratio calculated using underwriter assumptions for stabilized net operating income and loan terms.
Underwritten Debt Service Coverage Ratio (DSCR) is the ratio of projected stabilized net operating income (NOI) to the annual debt service using the lender’s underwriting assumptions. Unlike historical or trailing DSCR, the underwritten DSCR reflects pro forma rent, vacancy, concessions, stabilized operating expenses, and any reserves the lender expects at the loan’s start. Lenders use underwritten DSCR to determine debt capacity, set loan covenants, and size loans for acquisitions, refinances, or construction financings based on the property’s projected ability to service debt under a conservative, forward-looking view.
When preparing a loan package or evaluating financing options, produce an underwriting model that reconciles owner projections to the lender’s required assumptions and then calculate the underwritten DSCR. Include conservative stabilization timetables, market rent comparables, and stress tests for vacancy and expense escalation. Use the underwritten DSCR to justify requested leverage and to compare loan offers, since different lenders apply different rent, recovery, and reserve assumptions that change the underwritten DSCR and therefore the maximum loan amount and pricing they will accept.
Underwritten DSCR is important because it directly drives loan sizing, covenant thresholds, and pricing in CRE lending. A lender’s underwritten DSCR determines how much debt a property can sustain and signals the lender’s view of cash-flow reliability under stress. For sponsors, understanding how underwritten DSCR differs from trailing or sponsor-projected DSCR is essential for realistic deal expectations and for negotiating terms. Accurate calculation and documentation of the underwritten DSCR reduce surprises in approval and ensure the capital stack supports the sponsor’s business plan without compromising operating performance.