Technical Reference Guide for the Annual Income Estimates for Census Families, Individuals and Seniors
T1 Family File, Final Estimates, 2023

by Centre for Income and Socioeconomic Well-being Statistics

Release date: July 18, 2025
Table of contents More information PDF version

Introduction

Urban planning, social policy, and local marketing strategies require a comprehensive understanding of regional socio-economic characteristics. The T1 Family File (T1FF) data, available for low levels of geography, can contribute significantly to this knowledge. These data will be a valuable aid to anyone assessing the sociological and financial status of residents in the geographic area of interest to them.

The T1FF data includes tables on census families, individuals and seniors. These tables are compiled from information obtained through annual personal income tax returns and is updated annually.

For simplicity, this documentation has been divided into four sections:

  • The first section deals with the source of the data, its vintage and accuracy and how the data are presented to maintain confidentiality.
  • The second section on data tables includes notes of explanation and describes the format of the data tables.
  • The glossary, in the third section, will provide the data user with definitions of the terms used in this documentation.
  • The fourth section contains an explanation of the geographic levels available.
Start of text box

Statistics Canada is merging key administrative income data programs into one redesigned program – T1 Family File Plus (T1FF+). T1FF+ will fully replace the T1 Family File (T1FF) and the Administrative Personal Income Masterfile (APIM). The Longitudinal Administrative Databank (LAD), currently based on the T1FF, will become a derived product of T1FF+.

The T1FF data release for the 2024 reference year will be delayed for six to eight months, from Spring 2026 to Winter 2026-2027. This will impact products such as web tables and custom tabulations. Census family and small area geography will be available on the T1FF+ early 2027 for both the 2024 and 2025 data.

The redesign is expected to be fully implemented in early 2027.

If you have any questions or concerns, please contact statcan.CHIS-T1FFPlus-CSLR-FFT1Plus.statcan@statcan.gc.ca.

End of text box

More information

Note of appreciation

Canada owes the success of its statistical system to a long-standing partnership between Statistics Canada, the citizens of Canada, its businesses, governments and other institutions. Accurate and timely statistical information could not be produced without their continued co-operation and goodwill.

Standards of service to the public

Statistics Canada is committed to serving its clients in a prompt, reliable and courteous manner. To this end, the Agency has developed standards of service which its employees observe in serving its clients.

Copyright

Published by authority of the Minister responsible for Statistics Canada.

© His Majesty the King in Right of Canada, as represented by the Minister of Industry, 2025

Use of this publication is governed by the Statistics Canada Open Licence Agreement.

Catalogue no.72-212-X

Frequency: Annual

Ottawa

close


Table of contents

Introduction - Main page
Section 1 - The data
Section 2 - The data tables
Section 3 - Glossary of terms
Section 4 - Geography
We invite your comments
List of available data products

Date modified: