Through financial institutions: You can sign up for a direct deposit or change your account information through many Canadian financial institutions; banks, credit unions, trust companies.
Online - My Account Portal: You can sign up yourself if you are registered for My Account. My Account can help you quickly and easily manage your tax affairs online, including signing up for a direct deposit or changing your account information.
You can also see if you have any uncashed cheques that are older than six months.
Online - mobile application: To start or update direct deposit information, use MyCRA.
By phone: To sign up for direct deposit or to change your account information, call CRA at 1-800-959-8281.