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Foreign Exchange Interventions in the New-Keynesian Model: Policy, Transmission, and Welfare

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  • Yakhin, Yossi

Abstract

The paper introduces foreign exchange interventions (FXIs) into a standard New-Keynesian small open economy model. It solves for the optimal FXI policy, suggests an implementable policy rule, and studies the transmission mechanism of FXIs. Relying on the portfolio balance channel, deviations from the uncovered interest rate parity (UIP) reflect financial inefficiencies. Therefore, a policy rule that stabilizes the UIP premium moves the economy toward its optimal allocation, regardless of the type of shocks it faces. Augmenting the rule with foreign reserves smoothing further improves welfare. The paper discusses the conditions under which strict targeting of the UIP premium is optimal. FXIs are transmitted by affecting the UIP premium. Purchasing foreign reserves increases the UIP premium, thereby raising the effective return home agents face and depreciating the domestic currency. Consequently, domestic demand contracts and export expands. The results are robust to a variety of modeling alternatives for the financial sector.

Suggested Citation

  • Yakhin, Yossi, 2024. "Foreign Exchange Interventions in the New-Keynesian Model: Policy, Transmission, and Welfare," MPRA Paper 122948, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:122948
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    References listed on IDEAS

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    More about this item

    Keywords

    Foreign Exchange Interventions; Policy Rule; UIP Premium; Monetary Policy; Open Economy Macroeconomics;
    All these keywords.

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • F30 - International Economics - - International Finance - - - General
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets

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