Short answerVenture debt is only minimally dilutive: lenders take warrants worth roughly 0.5–2% of equity, versus the 15–25% sold in a typical equity round. It works best right after a raise — sized at 20–35% of that round — to extend runway six to twelve months toward a milestone that justifies a higher valuation.
US startups borrowed a record $68.8 billion in venture debt in 2025 — PitchBook's 2025–2026 Venture Debt Review counts roughly 1,000 deals, with the median at $5.5 million. Clearly a lot of founders think venture debt is worth it. Whether it's worth it for you depends on three things this guide walks through: what it costs, when lenders will actually give it to you, and what happens if the plan slips.
What is venture debt and how does it work?
Venture debt is a term loan for venture-backed startups. Unlike a bank, the lender doesn't underwrite your profits — you probably don't have any. It underwrites your investors: the likelihood that the VCs who just funded you will fund you again. That's why facilities are sized off your last round, not your revenue.
A typical structure, drawing on 2025–2026 benchmarks from Phoenix Strategy Group and Venture Debt Hub:
| Component | Typical range | What it means in practice |
|---|---|---|
| Loan size | 20–35% of last equity round | $10M Series A → $2M–$3.5M facility |
| Interest rate | 8–15% (often SOFR + 6–9%) | Floating — budget for the top of the range |
| Interest-only period | 12–18 months | Principal repayment starts after this |
| Term | 36–48 months | Amortising after the I/O period |
| Origination fee | 1–2% of the loan | Paid at closing |
| End-of-term fee | 3–6% of the loan | Due at maturity — often forgotten in models |
| Warrants | ~0.5–2% fully diluted | The "dilutive" part; banks lower, funds higher |
Draw the money soon after an equity close, pay interest only for a year or so, then amortise. The all-in cost — interest plus both fees plus warrants — usually lands in the high teens as an effective annual rate. Cheaper than equity if you grow; a fixed obligation if you don't.
Is venture debt dilutive — and when should you use it?
Barely, and that's its whole appeal. The warrants attached to a typical facility cost 0.5–2% of fully diluted equity. Compare that with selling 20% in a priced round: on the same $50 million exit, warrants cost you about $500K–$1M, the round $10 million. So "is venture debt dilutive?" has a precise answer: yes, by roughly one-tenth of what an equity round costs.
The better question is timing. Venture debt has a paradox at its core: it's available exactly when you don't need it. Lenders compete for your term sheet in the 3–6 months after a round closes, when your bank account is full. Wait until you have eight months of cash left and the offers evaporate or arrive with covenants that hand the lender control. If you might want debt, raise it when you can't imagine needing it.
Use it when:
- It buys a milestone, not just months. Six extra months that get you to $3M ARR before the Series A conversation can move your valuation more than the debt costs.
- You're between rounds with a working plan. Debt turns an 18-month runway into 24 without touching the cap table. See how much you should raise to size the combination.
- You want insurance against a slow market. An undrawn facility costs little and removes the forced-seller dynamic if fundraising takes longer than planned.
Avoid it when the round you hoped for didn't happen and debt is the fallback. Repayments then start consuming a burn rate that equity was supposed to cover, and covenant triggers do the rest. Debt extends a funded plan; it cannot rescue an unfunded one.
What does venture debt cost in a worked example?
Take a $3M facility after a $10M Series A: 12% interest, 12 months interest-only, 36-month term, 1.5% origination, 4% end-of-term fee, 1% warrant coverage.
- Interest over the life of the loan: roughly $550K–$600K
- Origination fee: $45K
- End-of-term fee: $120K
- Warrants: 1% of equity — real cost only known at exit
Cash cost: about $720K on $3M borrowed, or an effective annual rate around 13–15% once fees are spread over the term. Against that, $3M of extra runway at your Series A price would have cost ~6–7% of the company at a $45M valuation. If the debt-funded quarters lift your next valuation by more than the interest bill, the trade pays for itself several times over.
One number to watch before signing: monthly debt service after the interest-only period. On this facility, amortisation plus interest runs roughly $110K a month in year two. If that's more than 15–20% of your net burn, the loan is quietly shortening the runway it claimed to extend — calculate your runway properly with debt service included before you sign.
Venture debt vs the alternatives
Venture debt assumes VC backing. If you don't have it — or don't want it — revenue-based financing prices capital against your revenue instead of your investors, and grants or tax credits may cover R&D outright. We compare all of them in nine ways to fund your startup without giving up equity.
What this means for you
Treat venture debt like an option you buy cheap and exercise rarely. Raise it within a quarter or two of an equity close, size it at 20–30% of the round, model the end-of-term fee and post-I/O amortisation explicitly, and negotiate the covenants and MAC clause as hard as the interest rate — the fine print, not the rate, is where these loans go wrong. And if the facility only makes sense assuming the next round arrives on schedule, you don't have a debt decision; you have a fundraising problem.
Frequently asked questions
How much venture debt can a startup get?
Lenders anchor on your last equity round and typically offer 20–35% of it. A startup that just closed a $10M Series A can usually borrow $2M–$3.5M. PitchBook's 2025 data puts the median US venture debt deal at $5.5 million, with the 75th percentile at $27.7 million as later-stage borrowers take larger facilities.
What do venture debt warrants actually cost founders?
Warrants give the lender the right to buy shares later, usually at your last round's price. Typical coverage costs 0.5–2% of fully diluted equity — banks sit at the low end, alternative lenders higher. On a $50M exit, a 1% warrant is $500K to the lender; painful, but far less than one extra point sold in a priced round.
Can you get venture debt without VC backing?
Rarely on classic terms. Most venture debt lenders underwrite the probability of your next equity round, so institutional investors on the cap table are the core credit signal. Bootstrapped companies with strong recurring revenue usually get better answers from revenue-based financing or ARR-based credit lines than from traditional venture debt.
What happens to venture debt if you can't raise your next round?
The loan doesn't disappear. Once the interest-only period ends, amortisation payments start consuming burn, and material-adverse-change clauses or covenants can let the lender restrict cash or call the loan. This is why debt should extend a funded plan, not replace a failed raise — repayment capacity has to exist without the hoped-for round.
Sources
- PitchBook — AI and a new scale of startups took US venture debt funding to another record, 2026. https://pitchbook.com/news/articles/ai-and-a-new-scale-of-startups-took-us-venture-debt-to-a-record
- Phoenix Strategy Group — Interest Rates and Venture Debt: What to Know, 2025. https://www.phoenixstrategy.group/blog/interest-rates-venture-debt-what-to-know
- Venture Debt Hub — Venture Debt Benchmarks: Rates, Terms & Startup Requirements, 2026. https://www.venturedebthub.com/post/venture-debt-benchmarks
