When the U.S. government made their R&D tax credit permanent in December 2015, it made a long-term commitment to using incentives to entice private firms to invest in research and development, joining many countries around the world. Although most studies find that R&D tax incentives promote R&D, there is little consensus on the extent of this effect. A recent firm-level analysis from the United Kingdom finds some of the strongest evidence to date on the effectiveness of R&D tax credits in incentivizing innovation. At the same time, however, other studies suggest other elements of a national economy such as education and infrastructure may be more important.
