Pension Contributions and Tax-Based Incentives : Evidence from the TCJA

We document that corporate pension contributions respond to tax-based incentives using the 2017 Tax Cut & Jobs Act (TCJA) as a natural experiment. The TCJA cut the U.S. federal corporate tax rate, temporarily increasing contribution incentives for sponsors of defined-benefit retirement plans. We exploit cross-sectional variation in ex-ante exposure to these incentives. We find that the tax break induced an extra $3 billion of sponsor contributions to medium- and large-scale plans in 2017. But we also find strong evidence of a reversal, both in terms of sponsor contributions and plan funding ratios by 2018. We find no evidence of impact on plan asset allocations. Our results suggest that the TCJA did not have a long-lasting impact on corporate defined-benefit pension funds