It depends on the method you are using within the payment system. If you’re using your debit card to make the transfer it should take between 0-24 hours for the transfer to go through while the fastest method would be to use the Google Pay balance which in most cases is instant. The slowest would be by using your bank account which can take up to 10 working days. Canadians shouldn’t have issues using their debit cards for this method or even transfer a few dollars to their Google pay account to have in case they need an instant transfer.