How to Calculate DSCR: Formula + SBA 1.15 Threshold 2026

DSCR = Net Operating Income (NOI) ÷ Total Annual Debt Service. NOI is your business revenue minus operating expenses (excluding debt payments and income taxes). Total Annual Debt Service is the sum of all principal and interest payments due in 12 months. A DSCR above 1.0x means the business generates more cash than it owes in annual debt — lenders want to see at least 1.15x to 1.25x. Source: SBA SOP 50 10.

SBA 7(a) underwriting guidelines require a minimum global DSCR of 1.15x, calculated on a global basis — meaning it includes both business debt obligations and the owner's personal debt (mortgage, car loans, student loans) alongside business and personal income. Most SBA preferred lenders prefer 1.25x or higher to provide a buffer. Source: SBA SOP 50 10 (sba.gov).

Global DSCR includes the business owner's personal income and debt obligations in addition to the business's figures. For example, a business may show 1.40x DSCR in isolation, but if the owner has a $4,000/month personal mortgage and $1,000/month in car payments that aren't covered by personal income, the global DSCR may still fall below the 1.15x SBA floor. Always calculate global DSCR before applying for an SBA loan. Source: SBA SOP 50 10.

Yes. Because depreciation and amortization are non-cash expenses that reduce taxable income on tax returns, lenders typically add them back when calculating Net Operating Income for DSCR purposes. Similarly, owner's compensation above a reasonable market salary may be partially added back. This is why DSCR from tax returns alone may understate the business's actual cash flow. Source: IRS Publication 946 (depreciation methods); SBA SOP 50 10.

Most conventional community banks and regional banks require a minimum DSCR of 1.20x to 1.25x for standard business loans — higher than the SBA's 1.15x floor. Stronger credits (1.35x+) typically receive better terms. For business lines of credit, some banks use a simpler deposit-volume analysis rather than a formal DSCR calculation. Source: Federal Reserve Small Business Credit Survey 2024 (fedsmallbusiness.org).

Five levers: (1) Increase net operating income — reduce controllable operating expenses or grow revenue before the application window. (2) Pay off or consolidate existing debt — every eliminated payment reduces total debt service. (3) Refinance high-rate debt — lower rate or longer amortization reduces annual payment. (4) Extend the proposed loan term — a 10-year SBA loan has a smaller annual payment than a 5-year bank loan for the same amount. (5) Separate excessive owner draws — restructuring owner compensation before underwriting can improve the DSCR presentation.

Yes, for SBA loans and many conventional business loans. Lenders calculate a global DSCR that combines business cash flow and personal cash flow. Your personal mortgage, car payments, student loans, and other personal obligations are added to the total debt service denominator. If you have significant personal debt and the business is your primary income source, global DSCR may be much lower than the business-only ratio. Pay down personal debt ahead of applying if possible.

A DSCR real estate loan is an investment property mortgage that qualifies based on the property's rental income coverage ratio rather than the borrower's personal income. Lenders require the property's annual net rental income to cover debt service by a minimum margin — typically 1.20x to 1.25x. This product is separate from SBA business DSCR analysis and is commonly used by real estate investors who have complex tax returns that understate personal income. Source: CFPB mortgage disclosure resources.

DTI (Debt-to-Income ratio) is used for consumer lending (personal loans, mortgages) — it divides total monthly debt payments by gross monthly income. A lower DTI is better. DSCR is the business equivalent and inverts the math: higher DSCR is better (more income relative to debt). DSCR also differs by using Net Operating Income rather than gross income, since business operating expenses must be covered before debt can be served. DTI and DSCR serve the same conceptual function across personal and business lending respectively.

Common reasons for DSCR failure: (1) Large existing debt with high annual payments reducing available cash flow. (2) Owner compensation too high, depressing NOI on tax returns. (3) Recent revenue decline — lenders use trailing 2–3 years, so a down year hurts. (4) High personal debt in a global DSCR calculation. (5) Proposed new loan too large for the income base. The Federal Reserve Small Business Credit Survey 2024 identifies insufficient cash flow as the most commonly cited reason for business loan denial.