This document outlines the funding programs in place across Canada (both federal and provincial) that fund equipment costs for people with disabilities, with a focus on wheelchairs.
This report was written by the Canadian Disability Policy Alliance. Although the information is older, it provides an overview of policies and then people can look for updated information on provincial websites. When reading the report, you can scroll down to page 9 for various federal and provincial programs and their contact information. The link on the side this screen is for the Canadian Disability Participation Project that also worked on this study.