Does a lower user cost of capital raise business investment?
Core argument: The authors estimate that a 1 percentage point decline in the user cost of capital is associated with a 2.328 percentage point increase in the investment rate over 2016–2022, and with a 1.426 percentage point increase over 2016–2018, the latter significant at the 10% level.
This paper demonstrates that U.S. firms on average increased their fixed investment in response to exogenous decreases in user cost of capital and marginal effective tax rate (METR) resulting from TCJA tax reforms. Using cross-sectional data we find that the user cost of capital is associated with higher rates of investment; BEA asset types with greater reductions in user cost of capital and METR after the 2017 Tax Cuts and Jobs Act had greater statistically significant increases in their investment rates, and that this is the case for several years after the tax reform. [Between 2016 and 2018] a 1pp decline in the cost of capital (ρ) is associated with a 1.426 percentage point increase in the investment rate), albeit at the 10% level of significance. The investment rate in 2022 minus that in 2016 also varies significantly with declines in ρ; from 2016 to 2022 a 1 percentage point decline in ρ is associated with a 2.328 percentage point increase in the investment rate. These estimates are meaningfully above the CBO’s CapTax model, [which found] that a 1% decrease in the user cost of capital is associated with a 0.7% increase in investment.




