Seasonal adjustment: Concepts and interpretation

Released: 2026-05-11

The reference document "Seasonal adjustment: Concepts and interpretation, 2026" provides non-technical answers to selected questions related to the use and interpretation of seasonally adjusted data. It replaces the document Seasonally adjusted data – Frequently asked questions and includes additional information to explain how the seasonal adjustment process adapts to structural changes in the economy.

Products

The reference document "Seasonal adjustment: Concepts and interpretation, 2026," which is part of Statistical Methods Reference Documents, is now available.

Contact information

For more information, or to enquire about the concepts, methods or data quality of this release, contact us (toll-free 1-800-263-1136; 514-283-8300; infostats@statcan.gc.ca) or Media Relations (statcan.mediahotline-ligneinfomedias.statcan@statcan.gc.ca).