Venture debt in 2026: a record in dollars, a shrinking pool of borrowers

The 2025–2026 Venture Debt Review produced by Runway Growth Capital with PitchBook puts the US market at a record $68.8 billion in 2025, while deal volume held steady at roughly 1,000 transactions a year. Read together, the two numbers describe the cycle: the average loan got much bigger, not the number of borrowers.

This is the easy misreading. A headline record is usually taken to mean credit for startups has loosened. The 2026 data says the opposite for most companies.

The record is in loan size, not in reach

PitchBook reports only 237 venture debt deals completed so far in 2026, far below last year's full-year total of 707. More than 40% of deal value comes from the five largest facilities, two of which belong to the same company, Nscale. One borrower can now bend the statistics of an entire market.

In Europe, more than €21 billion (about $24.4 billion) has been deployed, and PitchBook describes the debt market concentrating exactly as the equity market has: a small group absorbs most of the capital while the rest thins out. The Q2 2026 PitchBook-NVCA Venture Monitor names the phenomenon directly as a split in the debt market.

What lenders are actually buying

The Runway Growth Capital and PitchBook review describes the credit-worthy group quite precisely: companies with contracted or predictable revenue, capital efficiency, and structures that can be reliably underwritten. Notably, that group sits largely outside the equity segment now dominated by AI.

• Contracted or recurring revenue that lets a lender model repayment
• Capital efficiency: operating costs that do not depend on the next equity round
• Structures that can be underwritten on numbers rather than narrative
• For AI infrastructure: assets and compute contracts large enough to support facilities of hundreds of millions of dollars

The equity backdrop explains why debt looks attractive. In H1 2026 US venture deal value reached $412.7 billion, with AI taking $355.9 billion, or 86% of every dollar; rounds of $100 million or more accounted for 87.5% of the total. At the same time corporate venture arms joined only 21% of deals, their smallest share in ten years, as parents kept cash for their own AI bills.

The risk of using debt as a substitute for equity

Carta data for Q1 2026 puts the down-round rate at 11.4%, back to 2019–2020 levels. That makes debt look cheap in dilution terms: no need to print a lower valuation. But debt shifts the risk onto a different axis. A bad round damages the cap table; a maturing loan with no source of repayment damages the company itself.

For a company outside AI and without contracted revenue, the 2026 numbers point to a cold conclusion: the equity door and the credit door narrowed at the same time, rather than offsetting each other as they did in 2021.