Study title

Statistics Norway conducted comprehensive Income- and Property Surveys in 1958, 1962, 1967, 1970, 1973, 1976, 1979, and 1982. From 1984, Statistics Norway switched to a system of annual surveys. This change mainly affected the sample size and sampling issues, with little impact on the type of information collected. The information is largely determined by what is available in public tax data. The Income- and Property Surveys are not considered regular sample surveys; they are based on samples drawn from the tax authorities' registers. This means that foreign citizens are included if they are registered in the Central Population Register, which they usually are if they have work and residence permits. Children born during the year are included regardless of birth date, and the same applies to individuals who died during the year. The purpose of the Income- and Property Surveys has been to illuminate the income conditions for the entire population and for different groups. A key objective is to create statistics on household consumption, i.e., households that live and eat together, and to provide an overview of the distribution of individuals and households by income size, socioeconomic grouping, household type, geography, etc. Another key objective is to collect income and property data as a background for Living Conditions and Consumer Surveys. Following 1992, a tax system reform was implemented, making it important to gather information to study the effects of the reform, including for the self-employed, and a larger survey on such conditions was integrated specifically. Information is collected on all forms of income, property, tax deductions, and disposable income for individuals and households. Some information is linked from other registers, including marital status and family composition, while information on household composition is obtained through interviews. Family is a narrower concept than household; a family can consist of single individuals,...