Recent firm-level studies find R&D tax incentives to be much more effective at stimulating firms' R&D investment than what aggregate analyses indicate. Based on a distributed analysis of official R&D survey and administrative tax relief micro-data for 19 OECD countries, we show that two factors can reconcile these contrasting results. Firstly, a limited uptake of R&D tax incentives in most countries makes aggregate studies underestimate the effectiveness of R&D tax incentives. Secondly, R&D tax incentives are (much) less effective for large and R&D-intensive firms, which account for a small share of R&D-performing firms but most aggregate R&D tax relief, making firm-level studies overstate the aggregate effectiveness of R&D tax incentives.

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29 January 2025     Paper Number CEPDP2071

Download PDF - How effective are R&D tax incentives? Reconciling micro and macro evidence

This CEP discussion paper is published under the centre's Growth programme.