“…Even if the input additionality of R&D tax incentives is larger for small and medium-sized firms than for large firms (Box 2), the higher response of small firms to R&D incentives (Becker, 2014[14]; What Works Centre for Local Economic Growth, 2015[16]; European Commission, 2018 [23]; OECD, 2020 [17]; Lokshin and Mohnen, 2011 [24]; Appelt et al, 2016 [15]) may be due to financing constraints that would be better addressed by risk-sharing instruments (Dechezleprêtre et al, 2016[18]). Moreover, knowledge spillovers from small firms seem lower (European Commission, 2014 [25]; Bloom, Schankerman and Reenen, 2013 [20]).…”