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Time-Consistent Public Expenditures

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  • Paul Klein
  • Per Krusell
  • José-Víctor Ríos-Rull

Abstract

How should aggregate public expenditures be traded off against their financing costs? We incorporate public expenditures into a standard neoclassical growth setup with model policy choice as made by a government choosing tax rates and spending so that the resulting competitive equilibrium allocation maximizes consumer welfare. An additional key restriction that the government faces in our model is that it cannot commit to future policy. This restriction binds: current income taxes influence past savings decisions as well as past work decisions, and these effects are ignored by governments without access to commitment. We solve for equilibria where ‘reputational’ mechanisms are not operative: we characterize Markov-perfect equilibria of the dynamic game between successive governments. We characterize equilibria in terms of an intertemporal first-order condition (a ‘generalized Euler equation’, GEE) for the government and we use this condition both to gain insight into the nature of the equilibrium and as a basis for computation. The GEE reveals how the government optimally trades off tax wedges over time. For a calibrated economy, we find that when the tax base available to the government is capital income – an inelastic source of funds at any moment in time – the government still refrains from taxing at confiscatory rates. As a result, the economy is far from the mix of public and private goods that would be optimal in a static context; in return, steady-state savings are less distorted.
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Suggested Citation

  • Paul Klein & Per Krusell & José-Víctor Ríos-Rull, 2004. "Time-Consistent Public Expenditures," Levine's Bibliography 122247000000000652, UCLA Department of Economics.
  • Handle: RePEc:cla:levrem:122247000000000652
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    References listed on IDEAS

    as
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    3. Paul Klein & JosÈ-VÌctor RÌos-Rull, 2003. "Time-consistent optimal fiscal policy," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 44(4), pages 1217-1245, November.
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    More about this item

    JEL classification:

    • E62 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Fiscal Policy
    • H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation

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