Debt Financing

Debt financing is raising capital by borrowing money that must be repaid with interest, used as an alternative or complement to equity financing. It includes everything from a personal credit card founders charge on day one to a $50M syndicated bank loan at a Series D company, with a wide spectrum of structures in between, each with different cost, covenant complexity, founder risk, and dilution tolerance.

The categories that matter for startups: founder-side debt (credit cards, personal lines of credit, home equity loans, used in the earliest pre-revenue phase, typically $5K to $100K, with personal liability and interest rates of 8 to 25 percent), SBA loans (Small Business Administration 7(a) and 504 programs, $500K to $5M typical, 7 to 11 percent interest in 2026, requires personal guarantee plus historical revenue, slow to close at 60 to 120 days), traditional bank loans and lines of credit (require profitability or significant collateral, typically inaccessible to pre-profit startups), Venture Debt (specialized loans for venture-backed companies, typically 25 to 50 percent of the most recent equity round, prime plus 2 to 5 percent interest with 0.5 to 2 percent warrant coverage, available from First Citizens/HSBC Innovation Banking post-SVB, Trinity Capital, Hercules Capital, Mercury, Brex), revenue-based financing (RBF; loan repaid as a percentage of monthly revenue, popular for SaaS and ecommerce, from Pipe, Capchase, Clearco, and others), and convertible debt (Convertible Notes and SAFE, which are technically debt or debt-like instruments designed to convert to equity at the next priced round). The founder decision frame is rarely "debt vs equity" in isolation; it is "what mix of debt and equity matches this company's revenue predictability and stage." Companies with predictable recurring revenue and a clear next round can use debt to extend runway without dilution. Companies without revenue or with uncertain next-round prospects should rarely take debt because covenant breaches and cash-service requirements can accelerate failure rather than buy time.

What founders get wrong: Using debt as a substitute for equity the company cannot raise. Debt is best as a complement to a recent equity round, extending runway by 6 to 12 months toward measured milestones. Companies that take debt because no one will fund them in equity typically cannot service the debt and end up in covenant violation, which forces a faster failure than dilution would have.

Related: Venture Debt · Venture Capital · Startup Funding · Runway · Dilution

FAQ

What is debt financing?
Raising capital by borrowing money that must be repaid with interest, as opposed to equity financing where capital is raised by selling ownership. The category covers everything from founder credit cards to $50M syndicated bank loans, with widely varying cost, structure, and risk.

Is debt financing better than equity financing?
Neither is universally better. Debt preserves ownership but requires servicing from cash flow and adds covenant risk. Equity dilutes ownership but has no repayment obligation. The right choice depends on the company's cash flow predictability, stage, and dilution tolerance. Most venture-backed companies use both.

What types of debt are available to startups?
Founder-side debt (credit cards, personal lines), SBA loans (with personal guarantee), venture debt (for venture-backed companies, typically 25 to 50 percent of the recent equity round), revenue-based financing (loan repaid as a percentage of monthly revenue), and convertible debt instruments like notes and SAFEs.

When should a startup take on debt?
When the company has predictable revenue or a recently closed equity round, and the debt extends runway toward measurable milestones before the next financing event. Never as a substitute for equity the company cannot raise, because covenant breach risk turns debt into accelerated failure rather than bought time.