Are financing constraints binding for investment? Evidence from a natural experiment

This paper shows that the availability of cash flows dominates the effects of cost of capital for investment at the firm level. Using an exogenous tax reform in Canada as a quasi-natural experiment, I find that a temporary and unexpected increase in the cost of capital for firms with low availability of retained earnings has no effect on investment of those firms. A subsequent direct increase in the availability of cash flows has large effects on investment. This suggests that internal financing constraints are binding for firms, as they prefer to use low cost retained earnings to finance their investment. (c) 2020 Elsevier B.V. All rights reserved.