Posted: Sun Aug 24, 2008 8:51 pm-
You can't get reimbursed for the taxes you've paid, I assume you're still a tax resident of Canada from what you're saying. You have to claim a foreign tax credit in Canada, in fact you should already have done that for tax you paid in 2007 when you filed your T1 earlier this year.
It gets complicated because of the weird tax year the UK uses, so you actually have to get a statement from whomever you work for or get hold of HMRC directly to figure out how much tax you paid up to 31st December so you know how much to put down on the CRA foreign tax credit form.
You can still go back and file a T1 adjustment to make the claim now, might want to talk to the CRA about it.
You can't claim back the NI that has been withheld, but this counts towards your CPP contributions under the social security agreement with the UK.
The general guide for the T1 explains how to claim a foreign tax credit.
If you're staying for any great length of time you're probably better off moving your tax home to the UK, i.e. you declare to the CRA on your T1 that you no longer reside in Canada and cut all residential ties to Canada (e.g. swap your driver's licence to a UK one, tell your Canadian bank you are no longer resident for tax purposes, etc.)
Then you just pay tax like any other UK resident.
As we were discussing in the other thread, because NI as a proportion of your tax is a far higher percentage than CPP is in Canada, you end up usually owing extra income tax to the CRA because of the way the tax systems are structured, because the CRA only give you a foreign tax credit for the UK income tax, not the NI.
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Steve.