CBN Journal of Applied Statistics (JAS)


Asymmetry, inflation, nonlinear autoregressive distributed lag, oil price shocks


This study examines the impact of oil price shocks on inflation in Nigeria. A Non-Linear Autoregressive Distributed Lag (NARDL) approach was applied on quarterly data spanning 1999Q1 to 2018Q4. Results showed that oil price increases led to increase in headline, core and food measures of inflation in Nigeria. However, a decline in oil price resulted in a decline in the marginal cost of production and culminated in moderation of domestic inflation. Furthermore, negative oil price shocks led to higher inflation in Nigeria when exchange rate is dropped from the models, indicating that exchange rate absorbed the impact of oil price declines earlier, as lower oil prices culminated in lower external reserve, depreciation of the naira and ultimately higher inflationary pressures. Also, core inflation tends to respond more to oil price increases than food inflation. These results were robust to changes in econometric specifications and sample period. The study recommends that monetary policy actions of the Central Bank of Nigeria should focus on taming core inflation in periods of substantial oil price increases while strengthening its efforts at ensuring domestic sustainability in food production through its agricultural intervention programmes to further minimize the impact of international oil prices on food inflation. Similarly, the fiscal authorities should ensure that the fiscal stance is not excessively procyclical in periods of rising oil prices.

Author Bio

The authors are staff of the Central Bank of Nigeria

Publication Title

CBN Journal of Applied Statistics





First Page


Last Page




To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.