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Welfare-improving debt constraints


  • Mario R. Páscoa
  • Myrian Petrassi

    () (Department of Economics, PUC-Rio)

  • Juan Pablo Torres-Martinez

    () (Department of Economics, PUC-Rio)


We show that in economies without liquidity frictions, but with incomplete financial markets, when agents are infinitely lived and uniformly impatient, money can still be essential (that is, have a positive price in equilibrium) if and only if each agent has binding debt constraints at some node of her life span. That is, contrary to what might be expected, in the absence of a very productive financial market, frictions induced by debt constraints create some room for improving efficiency, by allowing money to have a role in transferring wealth across dates and states of nature.

Suggested Citation

  • Mario R. Páscoa & Myrian Petrassi & Juan Pablo Torres-Martinez, 2007. "Welfare-improving debt constraints," Textos para discussão 541, Department of Economics PUC-Rio (Brazil), revised Dec 2007.
  • Handle: RePEc:rio:texdis:541

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    References listed on IDEAS

    1. Paul A. Samuelson, 1958. "An Exact Consumption-Loan Model of Interest with or without the Social Contrivance of Money," Journal of Political Economy, University of Chicago Press, vol. 66, pages 467-467.
    2. Magill, Michael & Quinzii, Martine, 1996. "Incomplete markets over an infinite horizon: Long-lived securities and speculative bubbles," Journal of Mathematical Economics, Elsevier, vol. 26(1), pages 133-170.
    3. Manuel Santos, 2006. "The value of money in a dynamic equilibrium model," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 27(1), pages 39-58, January.
    4. Hernandez D., Alejandro & Santos, Manuel S., 1996. "Competitive Equilibria for Infinite-Horizon Economies with Incomplete Markets," Journal of Economic Theory, Elsevier, vol. 71(1), pages 102-130, October.
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    More about this item


    Cashless economies; Binding debt constraints; Fundamental value of money.;

    JEL classification:

    • D50 - Microeconomics - - General Equilibrium and Disequilibrium - - - General
    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets

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