Computing equilibria in finance economies with incomplete markets and transaction costs

P. Jean Jacques Herings*, Karl Schmedders

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Transaction costs on financial markets may have important consequences for volumes of trade, asset pricing, and welfare. This paper introduces an algorithm for the computation of equilibria in the general equilibrium model with incomplete asset markets and transaction costs. We show that economies with transaction costs can be analyzed with differentiable homotopy techniques and thus in the same framework as frictionless economies despite the existence of non-differentiabilities of agents' asset demand functions and the existence of locally non-unique equilibria. We introduce an equilibrium selection concept into the computation of economic equilibria that picks out a specific equilibrium in the presence of a continuum of equilibria.

Original languageEnglish (US)
Pages (from-to)493-512
Number of pages20
JournalEconomic Theory
Issue number3
StatePublished - Apr 2006


  • Asset pricing
  • Computational methods
  • Incomplete markets
  • Transaction costs

ASJC Scopus subject areas

  • Economics and Econometrics


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