Methodology Changes: Census Family Low Income Measure Based on the T1 Family File

This study looks at changes introduced in 2018 to the methodology used for the census family low income measure, based on the T1 Family File (T1FF; tax filer data). By making these changes, the methodology becomes better aligned with other data sources at Statistics Canada, such as the Census of Population and the Canadian Income Survey. To account for changes in the methodology, new T1FF standard tables on the census family low income measure (after-tax income), going back to 2004 data, are introduced.