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Epargne et inégalité de revenus

Author

Listed:
  • Dominique Strauss-Kahn
  • Jean Le Moigne

Abstract

[fre] II est couramment avancé qu'une réduction des inégalités de revenus aurait pour conséquence une baisse du taux d'épargne des ménages. Pour chiffrer cet effet, un modèle de simulation a été construit. Dans un premier temps, on retrace l'évolution des revenus et des composantes de l'épargne pour dix classes de revenu, à niveau constant d'inégalité. Le modèle couvre une période de cinq ans. L'évolution est ensuite simulée en envisageant différents schémas réducteurs d'inégalité, c'est-à-dire des croissances différenciées des revenus selon les groupes. On mesure le taux d'épargne à l'aide d'un concept de taux élargi : l'ensemble des emplois non consommés (épargne financière, investissements sur fonds propres, remboursements d'emprunts) est rapporté aux ressources (revenus plus emprunts ne finançant pas la FBCF des ménages).. On constate qu'une réduction sensible de l'inégalité n'a que peu d'effet sur la baisse du taux d'épargne. Seul le taux d'épargne financière baisse vraiment, sans qu'on observe urie quelconque « liquéfaction » de celle-ci. En revanche, une légère réduction de la croissance de la FBCF des ménages aurait sur l'épargne un effet au moins aussi dépressif que celui qui peut être lié à la réduction de l'inégalité. [eng] Savings and income inequality. It is often assumed that any attempt to lower thé income inequality level "would lead, aniong other effects, to a decrease of thé households saving rate. In order to quantify this effect, a simulation model has been built. Two steps : first, thé expected evolution of income and saving are simulated over a five year period, at unchanged inequality level. Then, miscellaneous patterns to reduce inequality are simulated and their effects on households savings evaluated. A somewhat enlarged definition of savings has been used : resources are income plus loans, while saving corresponds to these resources minus consumption. The main result is that the saving rate is only slightly affected by a rather im­portant lowering of the income inequality level ; moreover the Utile decrease of the financial saving rate does not involve any new preference for liquid assets. An other conclusion can be drawn : the saving rate is less sensitive to a lowering of inequality level than to a households dwellings expenditures decrease.

Suggested Citation

  • Dominique Strauss-Kahn & Jean Le Moigne, 1977. "Epargne et inégalité de revenus," Revue Économique, Programme National Persée, vol. 28(1), pages 71-108.
  • Handle: RePEc:prs:reveco:reco_0035-2764_1977_num_28_1_408306
    DOI: 10.3406/reco.1977.408306
    Note: DOI:10.3406/reco.1977.408306
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    References listed on IDEAS

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    1. Milton Friedman, 1957. "Introduction to "A Theory of the Consumption Function"," NBER Chapters, in: A Theory of the Consumption Function, pages 1-6, National Bureau of Economic Research, Inc.
    2. Feldstein, Martin S, 1974. "Social Security, Induced Retirement, and Aggregate Capital Accumulation," Journal of Political Economy, University of Chicago Press, vol. 82(5), pages 905-926, Sept./Oct.
    3. Blinder, Alan S, 1975. "Distribution Effects and the Aggregate Consumption Function," Journal of Political Economy, University of Chicago Press, vol. 83(3), pages 447-475, June.
    4. Milton Friedman, 1957. "A Theory of the Consumption Function," NBER Books, National Bureau of Economic Research, Inc, number frie57-1, March.
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