23 Jan
2023
Monetary Policy, Economic Uncertainty, and Firms R&D Expenditure
This paper studies the response of firms’ research and development (R&D) expenditure to monetary policy shocks in the US economy. Empirical results suggest that a 20 basis point increase in the interest rate decreases the aggregate R&D expenditure by 0.6 percent. Using Compustat firm-level data, I confirm that a monetary contraction leads to a persistent decline in US firms’ R&D expenditure. The effect on R&D expenditure is stronger for interest rate hikes and when firms face higher uncertainty. This is because economic uncertainty decreases firms’ leverage ratio and makes them more financially constrained, rendering R&D investment more vulnerable to contractionary policy shocks. I build a medium-scale DSGE model with endogenous output growth and financial frictions to interpret the empirical findings. The theoretical model highlights the importance of the credit channel for altering the effects of monetary policy on firms’ investment in R&D in the presence of economic uncertainty