The Botswana Consumer Price Index (CPI) has been rebased to December 2018, based on the results from the 2015/16 Botswana Multi-Topic Household Survey (BMTHS). Until December 2018, the CPI had a rebase period September 2016 with basket weights based on the 2009/10 Botswana Core Welfare Indicators Survey (BCWIS). The CPI rebase is necessary to represent consumer spending patterns and reflect changes in household spending patterns. The CPI basket has increased basket items, from 393 to 400 items, changed weights and a wider coverage area. However, category groups and sections have not changed from the initial 12 groups and 51 sections. The best international practice is to rebase the CPI after every five years, to reflect current prices and changing lifestyles of the population.