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Le modèle hybride de la structure par terme des primes souveraines de crédit et de liquidité dans la zone UEMOA

Author

Listed:
  • Florent Kanga GBONGUE

    (Finair Conseil, Université Felix Houphouët Boigny (UFHB))

  • Lambert N’Galadjo BAMBA

    (Université Felix Houphouët Boigny (UFHB))

Abstract

Dans le contexte actuel, la soutenabilité de la dette publique est devenue une probléma-tique cruciale pour la plupart des pays africains. Pour les pays de la zone UEMOA, cette soutenabilité est affectée par des primes souveraines implicites (PSI) sur le marché finan-cier régional (MFR), qui constituent une mesure essentielle de la perception du risque des émetteurs souverains. Cet article apporte des innovations méthodologiques aux travaux de Merrick (2001) et Gbongué et Bamba (2022) en proposant des modèles hybrides de détermination des PSI indirectes et particulièrement une solution au calibrage de la forme fonctionnelle du risque de liquidité, ce qui permet d’améliorer sensiblement l’estimation du coefficient de variation, ainsi que le taux de recouvrement implicite en cas de défaut de l’émetteur souverain. L’application sur la période 2015-2022 révèle que les structures par terme des primes souveraines de crédit et liquidité des pays de l’UEMOA sont stables lorsqu’elles sont estimées par des modèles hybrides, composés des modèles de Gumbel à l’interpolation et Log-Normale à l’extrapolation, ce qui améliore la visibilité du MFR à moyen et long terme. Ces PSI sont sensibles aux décisions de politique monétaire et aux paramètres de la courbe des taux sans risque, dont le calibrage mérite une attention par-ticulière. Aussi, l’étude recommande-t-elle la poursuite de l’objectif de stabilité des prix par les autorités monétaires, ainsi qu’une meilleure coordination entre les politiques mo-nétaire et budgétaire, comme garant de la stabilité de la courbe des taux de marché et, partant, d’une gestion efficiente des finances publiques dans l’Union.

Suggested Citation

  • Florent Kanga GBONGUE & Lambert N’Galadjo BAMBA, 2023. "Le modèle hybride de la structure par terme des primes souveraines de crédit et de liquidité dans la zone UEMOA," Region et Developpement, Region et Developpement, LEAD, Universite du Sud - Toulon Var, vol. 57, pages 101-145.
  • Handle: RePEc:tou:journl:v:57:y:2023:p:101-145
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    More about this item

    Keywords

    Dette publique; Modèles hybrides ; Primes souveraines de crédit et liquidité; UEMOA;
    All these keywords.

    JEL classification:

    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • H63 - Public Economics - - National Budget, Deficit, and Debt - - - Debt; Debt Management; Sovereign Debt
    • O55 - Economic Development, Innovation, Technological Change, and Growth - - Economywide Country Studies - - - Africa

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