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A Large Population Approach to Implementing Efficiency with Minimum Inequality

Author

Listed:
  • Sarvesh Bandhu

    (Indian Institute of Management, Bangalore)

  • Ratul Lahkar

    (Ashoka University)

Abstract
We consider the implementation of efficiency with minimum inequality in a large population model of negative externalities. Formally, the model is one of tragedy of the commons with the aggregate strategy at the efficient state being lower than at the Nash equilibrium. A planner can restore efficiency by imposing an externality equivalent tax and then redistribute the tax revenue as transfers to lower inequality. We characterize the transfer vector that minimizes inequality at the efficient state subject to incentive compatibility and budget balance. We then construct a mechanism that implements efficiency with minimum inequality in dominant strategies. We also show that minimizing inequality at the efficient state maximizes the minimum payoff at efficiency. But it is not equivalent to implementing the Rawlsian social choice function.

Suggested Citation

  • Sarvesh Bandhu & Ratul Lahkar, 2022. "A Large Population Approach to Implementing Efficiency with Minimum Inequality," Working Papers 76, Ashoka University, Department of Economics.
    • Handle: RePEc:ash:wpaper:76
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    References listed on IDEAS

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