We examine the relation between banks’ liquidity risk and their willingness to supply capital to borrowers under previously committed credit lines. We show that during the collapse of the asset-backed commercial paper (ABCP) market in the last quarter of 2007 and the first half of 2008, banks with higher exposure to ABCP conduits renegotiated significantly tougher conditions on the outstanding credit lines offered to borrowers in violation of a covenant. Specifically, we find that borrowers faced higher spreads over the prime rate and LIBOR as well as higher commitment fees on undrawn amounts. Our paper suggests that an increase in lender liquidity risk can bear financial implications for firms that use credit lines as an instrument of liquidity management.

We propose a theory of credit lines provided by banks to firms as a form of monitored liquidity insurance. Bank monitoring and resulting revocations help control illiquidity-seeking behavior of firms insured by credit lines. The cost of credit lines is thus greater for firms with high liquidity risk, which in turn are likely to use cash instead of credit lines. We test this implication for corporate liquidity management by identifying exogenous shocks to liquidity risk of firms in corporate bond and equity markets. Firms experiencing increases in liquidity risk move out of credit lines and into cash holdings.