On October 1, 2007, Passport Canada will introduce a simpler guarantor policy, which will allow most Canadian adult passport holders to act as guarantors.

Under this new policy, to be a guarantor, a passport holder:

Must hold a five-year Canadian passport that is valid or has been expired for no more than one year,
May be a family member,
May reside at the same address as the applicant,
Must have known the applicant for at least two years, and
Must be a Canadian citizen 18 years of age or older and must have been 16 years of age or older when they applied for their own passport.
By moving to a Canadian passport holder criterion for guarantor declarations, Passport Canada will be able to verify guarantor information from its own database, and will not have to rely on occupational directories.

Forms:

Simplified Renewal Application: http://www.ppt.gc.ca/forms/pdfs/pptc054.pdf

New Passport Application - Adult: http://www.ppt.gc.ca/forms/pdfs/pptc044.pdf
Passport Application – Child: http://www.ppt.gc.ca/forms/pdfs/pptc046.pdf