Asymmetric Exchange Rate Pass-Through and Inflation Rate in Nigeria

Nenubari John Ikue, Benjamin Ofuru, Joseph Jite Onodjaefe, Collins Obieze Onuosa, Joseph Ade Ajaba and Ntadi Jude Emeke
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Nenubari John Ikue: University of Port Harcourt
Benjamin Ofuru: National Bureau of Statistics
Joseph Jite Onodjaefe: University of Port Harcourt
Collins Obieze Onuosa: Central Bank of Nigeria
Joseph Ade Ajaba: University of Port Harcourt

International Journal of Research in Business and Social Science (2147-4478), 2024, vol. 13, issue 7, 282-292

Abstract: This paper investigates the asymmetric exchange rate pass-through (ERPT) to inflation in Nigeria. The study employed Autoregressive Distributed Lag (ARDL) and Nonlinear ARDL (NARDL) models from 2010Q1 to 2024Q2. The analysis incorporates key policy changes, such as the 2023 exchange rate unification, and explores both the short- and long-run impacts of exchange rate fluctuations on food and headline inflation. In particular, the study highlights the response and pass-through periods of exchange rate shocks, with depreciation demonstrating a stronger and more immediate effect on inflation than on appreciation. Results reveal that exchange rate depreciation exerts significant cost-push pressures, with a pass-through effect observed within 3 to 4 quarters, while the effect of appreciation is weaker and more prolonged. This asymmetry is especially pronounced for food inflation, where the dependency on imported goods accelerates the transmission of exchange rate shocks to consumer prices. The study also finds that cumulative depreciation has a much more pronounced effect on inflation. At the same time, appreciation offers minimal relief, reflecting Nigeria’s vulnerability to exchange rate volatility due to its reliance on imports. The findings show the importance of managing exchange rate fluctuations to control inflation, particularly given the asymmetry in how depreciation and appreciation affect prices. By providing a comprehensive analysis of both long- and short-run dynamics, this study contributes to the understanding of ERPT in Nigeria, offering insights for policymakers to implement targeted interventions to mitigate inflationary pressures in the context of exchange rate instability. Key Words:Inflation, Asymmetric, Interest-Rate-Spread, Exchange Rate, NARDL

Date: 2024
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