Serbinski Accounting Firms

Hi, I've searched the forums and haven't found anything quite the same as this, so please link me if this has already been answered:

I am a Canadian citizen. My spouse is a US citizen. I work but she does not and she has no income (recent past, present, or near future).

Until Oct 1, 2019 I was ...

For anyone coming across this, I have an answer. You absolutely do NOT need a Canadian agent any more, however you must remit the full 25%. If you want to do the net tax, you need an agent.

What you do is you call up "Part XIII tax and non-resident withholding accounts" number (currently 1-855-284 ...

[quote="nelsona"]Indeed the agent is not required, but the 25% is.[/quote]

Can someone please confirm this? How does this work? Everything I can find from the CRA says that the agent needs to be a Canadian resident. How can I be my own agent if I'm not a resident?