Posted: Thu May 29, 2008 10:43 am-
The tax issue is important here because you're both US citizens. Under US law, citizens must file 1040s forever. That is just annoying, however the US foreign tax credit is only $80,000 and something, so anything you earn over that limit can be subject to dual taxation in the US and Canada. If that presents a problem for you, it is likely to be repealed I reckon in the next two or three years, so you may want to take that into account when making your plans.
You can sponsor your spouse for entry and permanent residency, it's relatively straightforward, have a look at the CIC website. Probably simpler to get married in the US first from an application standpoint.
Simplest way to establish credit is via a secured credit card (i.e. a bank account with the bank that issues the card), however as Reba pointed out, if you have certain types of credit in the US you can transfer them to Canada. You don't need to wait, open a Canadian bank account now, declare non-residency. This way when you enter Canada and apply for a card they will see you have had money on account with them for awhile and they will give you credit. Just be sure to get them to change your residency status to Canada when you change your address (for reasons that blow my mind they don't do that automatically).
You can't bring a leased car into Canada permanently, you need to have the title in order to re-register it and the US company will almost certainly not release it to you. If they are willing to sell it to you, one thing you can do is get a bank loan to cover the cost.
"Residency" means different things. The US and Canada use different definitions for tax purposes. Assuming you do nothing else (such as changing your DL, establishing a home, etc.) you become resident in Canada after 90 days of presence in a calendar year.
Check on the IRS website for how the US defines "non-residency". You need it in order to be able to claim the foreign tax credit otherwise you will have to pay taxes twice.
Also you will need CBSA forms B4 and B4A. This is a list of the personal effects you will be importing.
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Steve.