Measuring tax incentives for R&D

A methodology for measuring the user cost of intangible R&D capital is developed. In contrast to the way in which the Hall-Jorgenson-King-Fullerton (HJKF) approach to measuring the user cost of capital, and the related notion of the effective marginal tax rate on capital, is typically applied to intangible R&D capital, the methodology takes explicit account of the microeconomic foundations of R&D in order to aggregate the user costs of the various inputs used in the production of R&D. Illustrative calculations are presented for Canadian provinces which show that relative to the methodology developed here, the standard approach substantially overstates the tax subsidy offered to intangible R&D capital.