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Robust stimulus of private investment: Tax rate cut or investment subsidy?

Author

Listed:
  • Yingjie Niu
  • Jinqiang Yang
  • Siqi Zhao
Abstract
This paper examines the net benefit accruing to a government when choosing between a lower tax rate on future profits and an investment subsidy as investment stimulation. We hypothesize that either the firm or the government faces Knightian uncertainty in contemplating investment. In the presence of the firm's Knightian uncertainty, the government prefers the investment cost subsidy to tax rate reduction as the conventional wisdom in prior literature. However, if the government is concerned about the model uncertainty, the optimal policy depends on the varying characteristics in reality, such as the ambiguity level, the growth rate, the volatility, as well as the interest rate environment. The tax rate cut is favorable when the growth rate, the discount rate, and the volatility are lower, and when the ambiguity parameter is higher. By taking into account Knightian uncertainty, we provide a potential rationale behind evaluating stimulus policies in different economic environments.

Suggested Citation

  • Yingjie Niu & Jinqiang Yang & Siqi Zhao, 2022. "Robust stimulus of private investment: Tax rate cut or investment subsidy?," International Journal of Economic Theory, The International Society for Economic Theory, vol. 18(3), pages 339-357, September.
    • Handle: RePEc:bla:ijethy:v:18:y:2022:i:3:p:339-357
    DOI: 10.1111/ijet.12303
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    References listed on IDEAS

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