Nigeria's National Bureau of Statistics published its August 2026 consumer price index on 15 September: headline inflation of 15.39 per cent year-on-year, down from 15.43 per cent in July, and 0.71 per cent on the month. The report's two "DIVISIONAL LEVEL" contribution tables again print each division's fixed basket weight multiplied by the headline rate. Food and non-alcoholic beverages, weight 40.02, is credited with 6.16 points of the annual rate and 0.28 of the monthly one — 40.02 times 15.39, and 40.02 times 0.71, each divided by 100. It is the fourth monthly edition in a row built that way, after the March and April reports decomposed the rate properly.
The index workbook shipped in the same download gives the real split. In August, food prices rose 1.78 per cent and contributed 0.73 points — more than the entire 0.71 per cent rise in the all-items index — while transport fell 0.52 per cent, housing and utilities 0.19 per cent and restaurants 0.02 per cent, together pulling the index down by about 0.07 points. The published table lists transport as the third-largest contributor to the month's increase, at 0.08 points. On the annual rate the gaps are as large: food's true contribution is 7.82 points rather than 6.16, and clothing and footwear, credited with 0.78 points, contributed 0.09, because its prices have risen only 1.9 per cent in a year.
Weighted by their own index moves, the thirteen divisions sum to the published headline — 0.707 on the month and 15.389 on the year — so nothing in the bureau's own data prevents it from printing the real contributions. This publication first reported the reversion to weight-times-headline tables on 25 August.