Many of the most successful technology, life science and advanced companies in the country received financing in the form of an equity investment during their rapid growth and scaling stages of development.  Whether viewed as valiant, villains or vultures, the presence of individuals and firms willing to provide capital to companies when they have few physical assets or revenues is strongly associated with healthy regional innovation economies. As a result, considerable policy attention has been focused by states on increasing the amount of risk capital flowing to local startups.

In a new working paper, Sabrina T. Howell of New York University and Filippo Mezzanotti of Northwestern University provide a systematic review of state angel tax credits. One of the most notable aspects of their research is a seemingly-comprehensive index of all of the relevant programs authorized by states over the past 30 years. The results indicate that angel tax credits have some impact on investment activity but not on economic outcomes.