The maximum business loan you qualify for is primarily determined by your Debt Service Coverage Ratio (DSCR) — lenders require a DSCR of at least 1.15 (SBA floor) to 1.25+, meaning your net operating income must exceed your total annual debt payments (including the proposed new loan) by 15%–25%; revenue, time in business, collateral, and credit score set secondary floors.
Debt Service Coverage Ratio = Net Operating Income ÷ Total Annual Debt Service. Net Operating Income (NOI) for this calculation is typically: gross revenue minus operating expenses, before interest and taxes, plus non-cash add-backs (depreciation, amortization, owner compensation above market). Total Annual Debt Service is all existing annual debt payments (principal + interest) plus the proposed new loan's annual payment. To qualify, DSCR must be at least 1.15 under SBA Standard Operating Procedure 50 10. Most conventional lenders target 1.25 or higher. A DSCR of 1.0 means your income exactly covers your debt — no cushion. At 1.15, you have a 15% buffer; at 1.25, a 25% buffer. The practical implication: lenders work backward from your NOI to find the maximum new payment that keeps DSCR at or above their threshold, then derive the maximum loan amount from that payment. A business with $200,000 NOI and $40,000 in existing annual debt service has $160,000 remaining capacity. At 1.15 DSCR, the maximum new annual payment is $160,000 ÷ 1.15 = $139,130, which at 10% APR on a 5-year term supports approximately $525,000 in new debt.
As a secondary heuristic, lenders also apply revenue multiple caps — maximum loan amount as a multiple of monthly or annual revenue — which vary by product type: SBA 7(a) term loans: maximum loan of $5 million; typical approvals for established businesses range from 1–2× annual gross revenue for working capital to 3–5× for commercial real estate purchases. Alternative lender term loans: 1–3 months of monthly revenue for short-term products; 6–18 months of monthly revenue for 12–24 month products. MCA / revenue-based financing: 1–1.5× monthly revenue is the typical advance; some lenders approve up to 2× for very strong deposit profiles. Lines of credit: typically sized at 15%–25% of annual revenue for unsecured lines. These multiples are secondary constraints — DSCR governs in almost every conventional loan decision. According to Federal Reserve Small Business Credit Survey 2024, the median approved loan amount for employer businesses seeking term loans was approximately $250,000 — significantly below the maximum many businesses qualify for, indicating that most businesses self-select for amounts aligned with their actual capital needs.
Even if DSCR supports a larger loan, secondary floors limit qualification: Time in business: most conventional lenders require 2+ years for full underwriting; 1–2 years for SBA microloans and alternative lenders. Startups (under 12 months) are largely limited to SBA Community Advantage, CDFI programs, or MCA products. Personal FICO: SBA preferred lenders typically require 650+ owner FICO; conventional bank term loans prefer 680+; alternative lenders approve 580–620+ with compensating factors. A sub-600 FICO doesn't eliminate qualification — it restricts product options and increases rate. Collateral: insufficient collateral doesn't automatically deny an application (especially for SBA loans where the guarantee partially substitutes), but it often reduces the approved amount or requires additional guarantors. According to SBA SOP 50 10, SBA-guaranteed loans must be fully collateralized to the extent available — the SBA guarantee covers the gap when business assets are insufficient, but lenders are still required to perfect liens on all available collateral.
HVAC contractor, 5 years in business: Gross revenue $780,000/year. Operating expenses (ex-debt) $540,000/year. Net Operating Income: $240,000/year. Existing debt service: $36,000/year (one truck loan). Remaining NOI after existing debt: $204,000. At 1.25 DSCR target: max new annual payment = $204,000 ÷ 1.25 = $163,200/year = $13,600/month. At 9% APR on a 7-year SBA 7(a) term: $13,600/month supports approximately $830,000 in new debt. Owner asks for $500,000 for equipment and working capital expansion. Approved: $500,000 — well within the DSCR-supported maximum. The owner could have qualified for significantly more, but the capital need was $500,000.