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Optimal climate and fiscal policy in an OLG economy

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  • Richard Jaimes

Abstract

This paper develops a climate–economy model to study the joint design of optimal climate and fiscal policies in economies with overlapping generations (OLGs). I demonstrate how capital taxation, if optimal, drives a wedge between the market costs of carbon (the net present value of marginal damages using the market interest rate) and the Pigouvian tax (the net present value of marginal damages using the consumption discount rate of successive OLGs). In contrast to deterministic infinitely lived representative agent models, at the optimum, the capital income tax is positive, the carbon price equals the market costs of carbon but it falls short of the Pigouvian tax when (i) preferences are not separable over consumption and leisure; and (ii) labor income taxes cannot be age‐dependent. I also show that restrictions on climate change policy provide a novel rationale for positive capital income taxes.

Suggested Citation

  • Richard Jaimes, 2023. "Optimal climate and fiscal policy in an OLG economy," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 25(4), pages 727-752, August.
    • Handle: RePEc:bla:jpbect:v:25:y:2023:i:4:p:727-752
    DOI: 10.1111/jpet.12637
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    JEL classification:

    • E62 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Fiscal Policy; Modern Monetary Theory
    • H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation
    • H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies
    • Q58 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Government Policy

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