Nigeria wants to revise its inflation reports following forecasts of artificial increases posted in December. The National Bureau of Statistics (NBS) is preparing to change the way it calculates inflation.
The rebasing, the first in 15 years, set December 2024 as the index's benchmark, a measure that officials say would skew last December's data, without reflecting actual price trends.
Consumer inflation peaked nearly 35% in December 2024 before falling sharply after the NBS revised its base year and food prices fell.
Authorities said the new methodology will provide a clearer picture of inflationary pressures in Africa's most populous country.
"The widely reported 30% figure for December is only a projection and does not come from the office", said Ayo Anthony, head of pricing at NBS. Consumer inflation peaked at almost 35% in December 2024 before falling sharply after the statistics office revised its base year and food prices fell.
"This increase is not the real inflation rate; it is an artificial increase caused by the base effect resulting from the rebasing", Mr Anthony said. We remove the index's single-month reference period and replace it with a 12-month reference period for 2024 to reflect real inflation. "
Mr Anthony noted that while countries like South Africa and Kenya use a one-month base, sharp price increases in Nigeria make the method unsuitable. Before last year's rebasing, Nigeria had rebased its inflation data in 2009.
"We haven't done a review in 15 years, so part of the base effect that's happening is due to this lag", said Bonaventure Nwosu, communications manager at NBS. "The increase you see for December is one-off and should not be interpreted as real inflation. From January 2026, the figures will normalize and reflect real market conditions. "
The office said the new methodology will provide a clearer picture of inflationary pressures in Africa's most populous country.
