You have to complete a 4 page form from CRA and submit it to them and CRA declares if you are non-resident for tax purposes based on that information. It can take months.
A Canadian citizen legally cannot "claim" non-residency for taxes, it has to be granted by Revenue Canada.
However, if you are in a country and work for a company that does not have any tax ties or reporting lines to the Canadian government, you may fly under the radar, but they may ask you hard questions if and when you return to Canada, and CRA can go back years and years and require documents etc. that you prove you did not earn any revenue and that you prove you had no direct ties (hence the 4 page form).
The onus is on you to prove you don't have to pay taxes, CRA does not have to prove anything, that's the law in Canada
You have to complete a 4 page form from CRA and submit it to them and CRA declares if you are non-resident for tax purposes based on that information. It can take months.
A Canadian citizen legally cannot "claim" non-residency for taxes, it has to be granted by Revenue Canada.
However, if you are in a country and work for a company that does not have any tax ties or reporting lines to the Canadian government, you may fly under the radar, but they may ask you hard questions if and when you return to Canada, and CRA can go back years and years and require documents etc. that you prove you did not earn any revenue and that you prove you had no direct ties (hence the 4 page form).
The onus is on you to prove you don't have to pay taxes, CRA does not have to prove anything, that's the law in Canada