Canadian taxpayers all have the right to confidential tax advice. In Canada, lawyers are able to provide confidential tax advice to their clients, and tax accountants are not.
The reason that taxpayers are allowed to have and are given the right to have confidential tax advice is that it's just good policy. It's what opens up a very frank, open, and transparent dialogue that enables the taxpayer to lay out their full tax situation so they can be appropriately counselled.