Not applicable

For economic family members, this refers to economic family after-tax income that has been adjusted by a factor that accounts for family size. The adjustment factor takes into account the lower relative needs of additional family members, as compared to a single person living alone, and is determined by using a scale that assigns a lower value to additional family members. The adjusted after-tax family income is then computed by dividing the family's after-tax income by the factor. Multiple equivalence scales are used in published data. The one chosen for use with the NHS income data is simply the square root of family size.

For persons not in economic families, the adjusted after-tax income is set at after-tax income. This is equivalent to a factor of 1.0 for a person not in an economic family.

Reported in: 2011

Reported for: Population in private households, economic families and persons not in economic families

Question no.: Derived variable

Responses: Not applicable

Remarks: For details on the components of total income, see 'Remarks' under Total income. See also After-tax income, Economic family and Economic family status.

A similar variable existed in the 2006 Census but was based on a different equivalence scale.