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Testing for UIP-Type Relationships: Nonlinearities, Monetary Announcements and Interest Rate Expectations

Author

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  • Christina Anderl

    (London South Bank University)

  • Guglielmo Maria Caporale

    (Brunel University London)

Abstract

This paper tests for UIP-type relationships by estimating first a benchmark linear Cointegrated VAR including the nominal exchange rate and the interest rate differential as well as central bank announcements, and then a Smooth Transition Cointegrated VAR (STCVAR) model incorporating nonlinearities and also taking into account the role of interest rate expectations. The analysis is conducted for five inflation targeting countries (the UK, Canada, Australia, New Zealand and Sweden) and three non-targeters (the US, the Euro-Area and Switzerland) using daily data from January 2000 to December 2020. While we cannot confirm the validity of UIP in its strictest theoretical sense, we find evidence for the existence of an equilibrium relationship between the exchange rate and the interest rate differential. Specifically, the nonlinear framework appears to be more appropriate to capture the adjustment towards the long-run equilibrium, since the estimated speed of adjustment is substantially faster and the short-run dynamic linkages more significant. Further, interest rate expectations play an important role: a fast adjustment only occurs when the market expects the interest rate to increase in the near future, namely central banks are perceived as more credible when sticking to their goal of keeping inflation at a low and stable rate. Also, central bank announcements have a more sizeable short-run effect in the nonlinear model. Finally, the equilibrium relationship between the exchange rate and the interest rate differential holds better in inflation targeting countries, where monetary authorities appear to achieve a higher degree of credibility.

Suggested Citation

  • Christina Anderl & Guglielmo Maria Caporale, 2022. "Testing for UIP-Type Relationships: Nonlinearities, Monetary Announcements and Interest Rate Expectations," Open Economies Review, Springer, vol. 33(4), pages 705-749, September.
    • Handle: RePEc:kap:openec:v:33:y:2022:i:4:d:10.1007_s11079-021-09640-8
    DOI: 10.1007/s11079-021-09640-8
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    Cited by:

    1. Daniel Gründler & Eric Mayer & Johann Scharler, 2023. "Monetary Policy Announcements, Information Shocks, and Exchange Rate Dynamics," Open Economies Review, Springer, vol. 34(2), pages 341-369, April.

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    More about this item

    Keywords

    UIP; Exchange rate; Nonlinearities; Asymmetric adjustment; CVAR (Cointegrated VAR); STCVAR (Smooth Transition Cointegrated VAR); Interest rate expectations; Interest rate announcements;
    All these keywords.

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets

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