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Equilibrium Analysis, Banking and Financial Instability

Author

Listed:
  • Dimitrios P. Tsomocos
Abstract
This paper first extends the canonical General Equilibrium with Incomplete Markets (GEI) model with money and default to allow for competitive banking and financial instability. Second, it introduces capital requirements for the banking sector to assess the short and medium term macroeconomic consequences of the proposed New Basel Accord. Monetary Equilibria with Commercial Banks and Default (MECBD) exist and financial instability and default emerge as equilibrium phenomena. A non-trivial quantity theory of money is derived and the term structure of interest rates incorporates both the 'expectations' and the 'liquidity preference' hypotheses. Thus, monetary, fiscal and regulatory policies necessarily generate real effects. Non-neutrality relies upon the real and nominal determinacy of MECBD. A version of the liquidity trap holds and the Diamond-Dybvig (1983) result is a special case. Finally, because of the presence of capital requirements for banks, a trade off exists between regulatory policy and efficiency. The model provides a useful analytical device for policy analysis of situations in which crisis prevention and management become necessary to reduce the risks and costs of financial instability.

Suggested Citation

  • Dimitrios P. Tsomocos, 2003. "Equilibrium Analysis, Banking and Financial Instability," OFRC Working Papers Series 2003fe08, Oxford Financial Research Centre.
    • Handle: RePEc:sbs:wpsefe:2003fe08
    as

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    File URL: http://www.finance.ox.ac.uk/file_links/finecon_papers/2003fe08.pdf
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    References listed on IDEAS

    as
    1. Geanakoplos, J. D. & Tsomocos, D. P., 2002. "International finance in general equilibrium," Research in Economics, Elsevier, vol. 56(1), pages 85-142, June.
    2. Tsomocos, Dimitrios P., 2003. "Equilibrium analysis, banking, contagion and financial fragility," LSE Research Online Documents on Economics 24826, London School of Economics and Political Science, LSE Library.
    3. Geanakoplos, John & Mas-Colell, Andreu, 1989. "Real indeterminacy with financial assets," Journal of Economic Theory, Elsevier, vol. 47(1), pages 22-38, February.
    4. Jean-Michel Grandmont & Yves Younes, 1973. "On the Efficiency of a Monetary Equilibrium," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 40(2), pages 149-165.
    5. Bewley, Truman, 1983. "A Difficulty with the Optimum Quantity of Money," Econometrica, Econometric Society, vol. 51(5), pages 1485-1504, September.
    6. M. Shubik & D. Tsomocos, 1992. "A strategic market game with a mutual bank with fractional reserves and redemption in gold," Journal of Economics, Springer, vol. 55(2), pages 123-150, June.
    7. DREZE, Jacques & POLEMARCHAKIS, Heracles, 1995. "Monetary equilibria," LIDAM Discussion Papers CORE 1995078, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    8. John Geanakoplos & Heracles M. Polemarchakis, 1985. "Existence, Regularity, and Constrained Suboptimality of Competitive Allocations When the Asset Market Is Incomplete," Cowles Foundation Discussion Papers 764, Cowles Foundation for Research in Economics, Yale University.
    9. Dubey, Pradeep & Geanakoplos, John, 2003. "Monetary equilibrium with missing markets," Journal of Mathematical Economics, Elsevier, vol. 39(5-6), pages 585-618, July.
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    More about this item

    Keywords

    Financial instability; competitive banking; capital requirements; Basel accord; regulation; incomplete markets; default; non-neutrality; Gains-to-Trade;
    All these keywords.

    JEL classification:

    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • E4 - Macroeconomics and Monetary Economics - - Money and Interest Rates
    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • G1 - Financial Economics - - General Financial Markets
    • G2 - Financial Economics - - Financial Institutions and Services

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