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Monetary and fiscal policy interactions in a New Keynesian model with capital accumulation and non-Ricardian consumers

  • Leith, Campbell
  • von Thadden, Leopold

This paper develops a small New Keynesian model with capital accumulation and government debt dynamics. The paper discusses the design of simple monetary and fiscal policy rules consistent with determinate equilibrium dynamics in the absence of Ricardian equivalence. Under this assumption, government debt turns into a relevant state variable which needs to be accounted for in the analysis of equilibrium dynamics. The key analytical finding is that without explicit reference to the level of government debt it is not possible to infer how strongly the monetary and fiscal instruments should be used to ensure determinate equilibrium dynamics. Specifically, we identify in our model discontinuities associated with threshold values of steady-state debt, leading to qualitative changes in the local determinacy requirements. These features extend the logic of Leeper (1991) to an environment in which fiscal policy is non-neutral. Naturally, this non-neutrality increases the importance of fiscal aspects for the design of policy rules consistent with determinate dynamics.

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Paper provided by Deutsche Bundesbank, Research Centre in its series Discussion Paper Series 1: Economic Studies with number 2006,21.

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Date of creation: 2006
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Handle: RePEc:zbw:bubdp1:4472
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  1. Jess Benhabib & Stephanie Schmitt-Grohe & Martin Uribe, 1999. "Monetary Policy and Multiple Equilibria," Departmental Working Papers 199914, Rutgers University, Department of Economics.
  2. Benhabib, Jess & Schmitt-Grohe, Stephanie & Uribe, Martin, 1998. "The Perils of Taylor Rules," Working Papers 98-37, C.V. Starr Center for Applied Economics, New York University.
  3. Michel, Philippe & von Thadden, Leopold & Vidal, Jean-Pierre, 2006. "Debt stabilizing fiscal rules," Working Paper Series 0576, European Central Bank.
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  9. Taylor, John B., 1993. "Discretion versus policy rules in practice," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 39(1), pages 195-214, December.
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  11. Annicchiarico, Barbara & Giammarioli, Nicola & Piergallini, Alessandro, 2006. "Fiscal policy in a monetary economy with capital and finite lifetime," Working Paper Series 0661, European Central Bank.
  12. Richard Clarida & Jordi Galí & Mark Gertler, 1997. "The science of monetary policy: A new Keynesian perspective," Economics Working Papers 356, Department of Economics and Business, Universitat Pompeu Fabra, revised Apr 1999.
  13. Carlstrom, Charles T. & Fuerst, Timothy S., 2005. "Investment and interest rate policy: a discrete time analysis," Journal of Economic Theory, Elsevier, vol. 123(1), pages 4-20, July.
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  18. Gul, Faruk, 2001. "Unobservable Investment and the Hold-Up Problem," Econometrica, Econometric Society, vol. 69(2), pages 343-76, March.
  19. Carlstrom, Charles T. & Fuerst, Timothy S., 2001. "Timing and real indeterminacy in monetary models," Journal of Monetary Economics, Elsevier, vol. 47(2), pages 285-298, April.
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  26. Leith, Campbell & Wren-Lewis, Simon, 2000. "Interactions between Monetary and Fiscal Policy Rules," Economic Journal, Royal Economic Society, vol. 110(462), pages C93-108, March.
  27. William Kerr & Robert G. King, 1996. "Limits on interest rate rules in the IS model," Economic Quarterly, Federal Reserve Bank of Richmond, issue Spr, pages 47-75.
  28. Calvo, Guillermo A., 1983. "Staggered prices in a utility-maximizing framework," Journal of Monetary Economics, Elsevier, vol. 12(3), pages 383-398, September.
  29. C.A. Sims, 1999. "The Precarious Fiscal Foundations of EMU," DNB Staff Reports (discontinued) 34, Netherlands Central Bank.
  30. Muthoo, Abhinay, 1998. "Sunk Costs and the Inefficiency of Relationship-Specific Investment," Economica, London School of Economics and Political Science, vol. 65(257), pages 97-106, February.
  31. Bill Dupor, 2000. "Investment and Interest Rate Policy," Econometric Society World Congress 2000 Contributed Papers 0007, Econometric Society.
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