Using data from the Italian Credit Register we identify the adverse effect of the freeze of the securitization market on bank lending during the crisis of 2007–2008. Applying a differences-in-differences estimation to data on firms that borrow from multiple banks, we single out credit supply by including firm fixed effects. Our results show that the degree to which banks tightened credit supply to nonfinancial firms is positively related to the share of loans they securitized before the crisis. The tightening translated into lower credit growth, higher interest rates, lower probability of accepting loan applications and higher probability of relationship termination. Firms were unable to fully compensate the negative credit supply shock, which suggests that the securitization freeze played a role in reducing aggregate credit availability.

We study the effect on credit relationships of the Small and Medium Enterprises Supporting Factor (SME-SF), a regulatory risk weight reduction on small loans to SMEs. Employing a regression discontinuity design and matched bank-firm data from Italy, we find that a 1 percent drop in capital requirements causes an average 13 basis points reduction in the cost of credit. Moreover, with a novel measure of bank regulatory capital scarcity, we show that the drop is larger for banks facing tighter constraints. Furthermore, the drop is larger for firms with low switching costs, while the sharp assignment rule may have led to the rationing of marginal borrowers. Such findings indicate that the entire distribution of firms and banks’ characteristics plays a crucial role in determining the impact of regulatory capital changes.