Analysis of the importance of lending to venture-backed companies.

Debt is estimated to make up about 15% of the total equity invested each year in US venture capital deals, whereas in Europe it reached a peak of 5.8% in 2007, according to research by trade body the British Private Equity and Venture Capital Association (BVCA), and it is rarer still in the rest of the world.

Introduced initially in the US in the 1960s as leasing – lending money to buy specific assets as collateral against the loans –…