To measure and analyze the changes in consumption level by grasping the structure of household expenditures
To provide basic data to be used for the weighting of the Consumer Price Index
To provide basic data to be used for establishing household welfare-related policies
* In 2017, the Household Income and Expenditure Survey was divided into two sectors. One is a quarterly survey on household income and the other is an annual survey on household expenditures. These two surveys use different samples.
Ordinary households of one or more members residing in Dong/Eup/Myeon nationwide.
Survey Unit and Target Population Size
Income: 4,300 households (monthly)
Expenditure: 12,000 households (annual)
Survey Reference Period and Date
Income * Reference period: first to last day of each month
Expenditure * Reference date: first of each month * Reference period: survey month for household account books / past 1 year for an annual questionnaire
1963: Surveyed 30 cities (1,700 households) for 5 expenditure items (food, housing, light and heat, clothing, and miscellaneous expenses)
1975: Adopted self-administered method for all expenditure items (previously, only food expense was surveyed through self-administration while the rest were surveyed through interview on a quarterly basis.)
1982: Restructured 5 expenditure items to 9 expenditure items (food, housing, light and heat, furniture, clothing, healthcare, education/culture/leisure, transportation, and other expenses)
2003: The urban household survey expanded to the nationwide household survey.
2005: Introduced the multi-purpose correlation sample method
2006: Conducted the survey on single-person households; introduced the electric housekeeping book system
2009: Changed the classification of consumption expenditure items into the classification based on COICOP
2014: Partially consolidated items (to 426 items)
2017: Changed into an expenditure-focused annual survey
Data Collection Method
Items related to household status and income: Interview by surveyors
Items related to household expenditure: Input by respondents