Barbie, Martin (Department of Economics, University of Bonn) Hagedorn, Marcus () (IZA, Bonn and University of Bonn) Kaul, Ashok () (IZA, Bonn and University of Bonn)
Abstract
Is there a role for debt beyond curing overaccumulation of capital? Does dynamic efficiency and the infeasibility of debt Ponzi schemes eliminate any Pareto-improving role for a government in a competitive economy with complete markets? Is there an optimal maturity structure of public debt? Using a stochastic Diamond OLG model, we tackle these questions. We show that government debt can Pareto-improve upon market allocations through a mechanism that resembles a Ponzi scheme. But instead of rolling over safe debt, we can interpret our scheme as one that rolls over an insurance contract generation for generation. This kind of dynamic risk-sharing can provide insurance against macroeconomic risk. Using the widespread welfare concept of interim Pareto optimality, we ensure that all generations voluntarily participate in our insurance scheme. Yet, the scheme cannot be replicated on capital markets. Exploiting information from the term structure of interest rates, we derive testable conditions both for dynamic efficiency and for interim Pareto optimality in terms of interest rates. We provide evidence that real world economies, while being dynamically efficient, are likely not to be interim Pareto optimal. We conclude that there may be a welfare-improving role for a well-designed maturity structure of debt.
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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number
412.
Find related papers by JEL classification: D61 - Microeconomics - - Welfare Economics - - - Allocative Efficiency; Cost-Benefit Analysis H63 - Public Economics - - National Budget, Deficit, and Debt - - - Debt; Debt Management H55 - Public Economics - - National Government Expenditures and Related Policies - - - Social Security and Public Pensions E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Determination of Interest Rates; Term Structure of Interest Rates
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
Elmendorf, Douglas W. & Gregory Mankiw, N., 1999.
"Government debt,"
Handbook of Macroeconomics,
in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 25, pages 1615-1669
Elsevier.
[Downloadable!] (restricted)
Other versions:
Douglas W. Elmendorf & N. Gregory Mankiw, 1998.
"Government Debt,"
NBER Working Papers
6470, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)