Posted: Wed May 14, 2008 11:32 am-
If you have residential ties to Canada, you have to pay tax in Canada. There is no "two year" rule, first I've heard of it.
You can request a ruling from the CRA on Form NR-73. If you never declared that you were non-resident, they will consider you to still be resident, so you will face filing penalties and late payment penalties, as well as dual taxation on any income you earned in the UK.
To get the tax treaty exemption, you have to claim it on the HMRC UK-Canada tax treaty form:
http://www.hmrc.gov.uk/cnr/form_canada.htm
Your tax liabilty can be tricky to work out because the tax years are different in the UK.
You could move your tax home to the UK, but that only helps from this point forward, not the time up until the time you moved your tax home, and to do that you must sever all residential ties to Canada and inform the CRA on your T1 that you left Canada. Plus you must inform the banks etc. in Canada that you are non-resident so they can withhold Part XIII tax under the tax treaty (which under the UK treaty is 10% on any income, e.g. bank interest).
Where you physically are, e.g. if you visit, isn't that important, it's where you ordinarily reside and make your home that is important for tax purposes. Under UK and Canadian law, spending 90 days in the country is a residential tie unless you claim the tax treaty exemption. I.e. if you do nothing, you're considered to be resident after 90 days. Doing "nothing" means exactly that, if you get a job, etc. those can be considered residential ties as well.
Moving your tax home to the UK means you could become liable to departure tax in Canada, so it's not a good idea unless you're sure you're not going to be hit by it. Generally people who hold significant investments in financial instruments or who hold stock in a private corporation are in the worst situation with the departure tax.
Not a good idea to do it either if you plan on coming back to Canada. Just increases the complexity of the paperwork. The only reason to do it is if you save significant amounts of money being subject to UK tax instead of Canadian tax.
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Steve.