Working paper

Corporate Debt Structure and Heterogeneous Monetary Policy Transmission

Published on 19 December 2023
Authors : Marie Alder, Nuno Coimbra, Urszula Szczerbowicz

Working Paper Series no. 933. Using French firms’ balance sheet data, we show that corporate debt structure plays a significant role in ECB monetary policy transmission. In addition to interest rate policy, we analyse the impact of a novel ECB-induced bond liquidity shock. While both types of policy tightening diminish French firms’ investment, the transmission of conventional monetary policy shocks is stronger for firms with a higher share of bank debt. Conversely, contractionary bond liquidity shocks lower investment more for firms with higher bond shares of total debt. We further investigate the transmission channels and show that bond liquidity tightening reduces French sovereign bond market liquidity and leads to higher bond-bank loan interest rate spreads and lower bond issuance.

Image Document de travail 933
Average response of investment to CMP (left panel) and (right panel) shocks (years on x-axis)

In this paper, we analyse the transmission of monetary policy to French firm's investment and credit. 

As compared to conventional monetary policy (CMP) shocks, we highlight a novel monetary policy shock that consists of movements in the French-German sovereign spreads around ECB announcements. We then show that this shock is very much correlated with liquidity in bond markets, and we call it bond liquidity shock (BL). 

Using a large panel of French firms, we then show both types of policy diminish French firms' investment and credit after contractionary shocks. However, the strength of the impact depends on each firm's debt structure.

Firms that are more reliant on bank credit as a source of funding are relatively more impacted by conventional monetary policy shocks. On the other hand, firms that are more reliant on bond debt tend to be more sensitive to shocks that affect bond liquidity.

We also show that on aggregate there is important, but imperfect, substitution between the two types of funding sources. After a conventional shock, there is a rise in bond debt issuance that partially offsets the fall in new bank loans. On the other hand, after a shock to bond liquidity, there is a rise in bank loans that partially offsets the fall in corporate bond debt issuance.

Consistent with the interpretation that conventional monetary policy impacts the bank lending channel more directly than shocks that affect bond liquidity (and vice-versa), we also find that bank rates rise more than bond yields after a conventional monetary policy shock, while the opposite occurs after a bond liquidity shock.