Your obligations as a sponsor
When you agree to be a sponsor, you must sign an undertaking, promising to give financial support for the basic needs of your spouse or partner and their dependent children.
Basic needs are:
food, clothing, shelter and other needs for everyday living,
dental care, eye care and other health needs that aren’t covered by public health services.
Там ще багато чого, ось читайте.
www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides/guide-5289-sponsor-your-spouse-common-law-partner-conjugal-partner-dependent-child-complete-guide.html#obligations