Growth Promotion Policies When Taxes Cannot Be Raised

Katsunori Minami and Ryo Horii

ISER Discussion Paper from Institute of Social and Economic Research, The University of Osaka

Abstract: This paper examines the growth effects of R&D subsidies and public-funded basic research in an R&D-based endogenous growth model under circumstances where the government cannot raise taxes. We show that if individuals have enough life-cycle saving motives and R&D productivity is sufficiently high, g>r holds in equilibrium, and the government can finance the required expenses while perpetually rolling over the debt. Whenever possible, debt-financed R&D subsidies always enhance short-run growth. However, long-term growth is promoted only when the initial g-r gap is wide enough. Even when the long-term effect is negative, the economy may benefit from the increased GDP during a long transition to the new BGP. We confirmed that the social return to R&D is always higher than the growth rate despite g>r. In an extended model, we examine the effect of enhancing public-funded basic research and find that it is particularly effective for low-growth economies.

Date: 2024-09, Revised 2025-01
New Economics Papers: this item is included in nep-gro
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https://www.iser.osaka-u.ac.jp/static/resources/docs/dp/DP1258R.pdf

Related works:
Working Paper: Growth Promotion Policies When Taxes Cannot Be Raised (2025)
Working Paper: Growth Promotion Policies when Taxes cannot be Raised (2024)
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