We use a change in Canadian tax law to examine how small private firms respond to the R&D tax credit. Our estimates imply an R&D user-cost elasticity above unity. Contract R&D expenditures are more elastic than the R&D wage bill. Firms that perform contract research or recently invested in R&D...

We exploit a change in eligibility rules for the Canadian Scientific Research and Experimental Development (SRED) tax credit to gain insight on how tax credits impact small-firm R&D expenditures. After a 2004 program change, privately owned firms that became eligible for a 35 percent tax credit...