Loan Underwriting & Financial Metric Calculators
Instant, mathematically exact calculations evaluated against commercial bank and SBA lending guidelines. No credit pull or account required.
What is a good Debt Service Coverage Ratio (DSCR) for a commercial or SBA loan?
A Debt Service Coverage Ratio (DSCR) of 1.25x or higher is considered standard and acceptable by commercial banks and SBA underwriters. Ratios above 1.35x are classified as Prime, while ratios between 1.15x and 1.24x meet minimum SBA SOP guidelines but may trigger closer scrutiny.
DSCR = Net Operating Income (NOI) / Annual Debt ServiceFormula: Net Operating Income (NOI) ÷ Annual Debt Obligations
Gross rental or operating revenue minus operating expenses (excluding debt service and income taxes).
Total annual payments of principal and interest for all property or business debt.
Meets conventional bank and SBA underwriting guidelines (target ≥ 1.25x).
Next Step
Evaluate this DSCR in combination with your credit and collateral across the Five C's framework:
Run Full Business AssessmentHow Underwriters Use These Formulas
In commercial, SBA, and residential mortgage credit committees, underwriting is not subjective guesswork. Lenders rely on deterministic mathematical ratios to establish risk boundaries and capital adequacy.
DSCR in Commercial & SBA
Measures the primary repayment capacity. Lenders verify tax returns or CPA-reviewed financials to calculate true cash flow, adjusting for non-cash depreciation and interest add-backs.
LTV as Collateral Cushion
Determines how much equity the borrower risks before the lender suffers a loss in default. Lower LTVs directly reduce interest rate margins and loan guarantee fees.
DTI for Personal Guarantors
Ensures the business owner or property investor is not personally overleveraged. High personal debt payments frequently siphon capital away from business operations.