The Household Expenditure Survey (HES) collects detailed information on the latest consumption expenditure of resident households in Singapore. Conducted once in five years since 1972/73, the HES also obtains households’ demographic and socio-economic characteristics and ownership of consumer
durables. Results of the survey are used for expenditure and income studies as well as to update the weighting pattern and the basket of goods and services for the compilation of the Consumer Price Index (CPI).