The debt service coverage ratio — DSCR — is the single number a lender uses to answer the question behind every business loan: does this business generate enough cash to pay its debts and still breathe? It is a ratio of cash flow to debt payments, and it is usually the first calculation run on your file — before collateral, before the story. This page covers the formula, the part most guides skip (building the numerator from your actual tax return), the thresholds lenders really apply, and the levers that move the ratio. Run your own numbers in our DSCR calculator.
General information, not financial advice. Thresholds below are typical lender expectations as published by the named sources, not guarantees of approval at any ratio.
DSCR = net operating income (NOI) ÷ total debt service
Debt service means all principal and interest due in the period on all of the business’s debt — existing loans plus the proposed one (Chase’s and CFI’s consensus definition). Not just the new loan. Not just one lender’s slice. Everything the business owes, because every payment competes for the same cash.
Two examples from published walk-throughs: $500,000 of NOI against $400,000 of debt service gives a DSCR of 1.25× (mbs.cpa) — the business earns $1.25 for every $1 of payments. $350,000 against $200,000 gives 1.75× (beancount). A ratio of exactly 1.00× means cash flow covers payments and nothing else; below 1.00×, the business does not generate enough to pay its debts from operations at all. The × is conventional — also written 1.25 or 1.25:1.
This is the step borrowers fumble, because lender NOI is not the bottom line on your return — it is a rebuild of it. Lenders start from reported profit and adjust:
Lenders also subtract things borrowers forget: unfunded capital expenditures the business will genuinely need, tax distributions, and owner draws beyond salary. The SBA’s lender guidance in SOP 50 10 lists exactly these adjustments — unfunded capex, nonrecurring income, distributions, owner’s draw, global cash flow — as items the credit analysis must document. Expect the lender’s NOI to land lower than yours; the gap is usually add-backs you claimed that they declined.
Treat the thresholds as typical expectations, attributed — not published guarantees:
A strong ratio does not approve a loan by itself, and a ratio slightly under a bank’s line does not end the conversation everywhere — it changes which lenders and programs are realistic, which is why the ratio pairs with the other gates in how much you can qualify for.
Global DSCR blends the business with the owner’s personal finances — personal income added to the numerator, personal debts (mortgage, car, cards) added to the denominator. Small-business lenders use it because the owner’s personal obligations draw on the same wallet. A business-only ratio of 1.4× can become a global 1.1×; ask which one your lender is quoting.
SDE in acquisitions. When a business is being bought, lenders often work from seller’s discretionary earnings — NOI plus the departing owner’s salary and perks — rather than EBITDA. It gets two sentences here because it belongs to the acquisition pages: see the acquisition loan calculator. And keep business DSCR separate from property DSCR (rent versus a building’s PITIA), a real-estate ratio; if your loan is not secured by rental property, it is not your number.
Three levers, each with a cost. Raise NOI: document every legitimate add-back, and let a one-time expense age off the returns lenders weight most. Cut annual debt service: a longer term lowers the yearly payments in the denominator — terms by loan type shows the ranges, and the trade-off is more total interest. Reduce other debt first: paying off a small, expensive loan can free more denominator than the same cash put down on the new loan. Once the ratio is where you need it, the affordability calculator turns it into a maximum loan size; the quick estimate for any amount is in the plain business loan calculator.
What is a good DSCR? For most bank business lending, 1.25× or higher — cash flow covering payments with a 25% cushion — is the common benchmark (Chase’s guide asks the same question under the heading “What’s a good DSCR, anyway?”). SBA lenders commonly underwrite around 1.15–1.25×, since the SBA sets a repayment-ability standard rather than a fixed ratio. Below 1.00× the business does not cover its debt payments from operations, which ends most applications. Treat every threshold as a typical lender expectation, not a promise: a strong 1.2× with clean financials can beat a messy 1.4×.
How do you calculate DSCR? Divide net operating income by total debt service for the same period: DSCR = NOI ÷ (all principal and interest due on all business debt, existing plus proposed). Build NOI from the tax return — net income plus interest, depreciation and amortization added back, plus documented one-time expenses — and total every loan payment the business owes in the year. $500,000 of NOI against $400,000 of total debt service is a 1.25× DSCR.
Does DSCR include existing loans? Yes. Debt service in the formula is the business’s total obligation — every existing loan and lease payment plus the proposed new loan (Swoop’s and FreshBooks’ formula treatments both include all obligations). That is why adding a second loan is harder than getting the first: the new payment enters the denominator of a ratio your existing NOI must still cover.
General information, not financial advice. Sources: Chase DSCR guides (formula, 1.25× expectation); Corporate Finance Institute DSCR guide; Fit Small Business; mbs.cpa and beancount (worked examples); SBA SOP 50 10 (repayment-ability standard and cash-flow adjustments); Swoop; FreshBooks. Currency verified 2026-10-23.