Notching R&D Investment with Corporate Income Tax Cuts in China

We study a Chinese policy that awards substantial tax cuts to firms with R&D investment over a threshold or "notch." Quasi-experimental variation and administrative tax data show a significant increase in reported R&D that is partly driven by firms relabeling expenses as R&D. Structural estimates show relabeling accounts for 24.2% of reported R&D and that productivity increases by 9% when real R&D doubles. Policy simulations show firm selection and relabeling determine the cost-effectiveness of stimulating R&D, that notch-based policies are more effective than tax credits when relabeling is prevalent, and that modest spillovers justify the program from a welfare perspective.