Differences across Place and Time in Household Expenditure Patterns: Implications for the Estimation of Equivalence Scales

Angela Daley, Thesia Garner, Shelley Phipps, Eva Sierminska

Research output: Working paper

Abstract

Equivalence scales are often used to adjust household income for differences in characteristics that affect needs. For example, a family of two is assumed to need more income than a single person, but not double due to economies of scale in consumption. However, in comparing economic well-being across countries and/or time, we ask whether it is appropriate to use the same equivalence scale if consumption expenditure patterns differ? We estimate equivalence scales for eight countries with data ranging from 1999 to 2012, using the same Engel approach in all cases. We find considerable variation in economies of scale across countries and some increases over time. Notably, we find that economies of scale are generally larger than those implied by the ‘square root of household size’ equivalence scale. Our results have important implications when deciding whether to use a common equivalence scale in comparisions of economic well-being across place and time.
Original languageEnglish
Place of PublicationEsch-sur-Alzette
PublisherLISER
Number of pages36
Publication statusPublished - 2 Jun 2020

Publication series

NameWorking papers
PublisherLISER
No.2020-06
ISSN (Electronic)2716-7445

Keywords

  • economic well-being
  • Engel
  • necessities
  • equivalence scale
  • economies of scale

Liser Collections

  • Les working papers du Liser

Research Output

  • 1 Working paper

Differences across Place and Time in Household Expenditure Patterns: Implications for the Estimation of Equivalence Scales

Daley, A., Garner, T., Phipps, S. & Sierminska, E., Feb 2020, Esch-Belval: LIS (Cross-National Data Center in Luxembourg), 35 p. (LIS Working Paper Series).

Research output: Working paper

Open Access

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