Tue Nov 18, 2008 11:44 am
It's a bit dicey because she is a Canadian working a Canadian job in Canada. For 20 days though she might be able to get away with it.
So you would file a 1040 jointly in the US, and a joint non-resident T1 in Canada. Bear in mind the CRA may send you a nasty letter though, or ask her to fill in an NR-73 to establish her residency status. So it is very important indeed to sever all residential ties to Canada absolutely. If you still have a Canadian bank account you need to tell them you are non-resident for tax purposes so they withhold Part XIII tax. I know for a fact the CRA check that one, because they receive a T5 from the bank (and they told me it's one of the things they check).
If you have a read of NR-73 it will give you an idea of what you need to do.
The problem is if you sever all residential ties to Canada, you have nothing to show non-immigrant intent when you renew TN-1 status, which may cause you a problem as USCIS usually require some evidence of residential ties to Canada.
The advice I always give on here is to carry on filing in Canada for at least the first year and file as non-resident in the US, because moving your tax home to the US and then moving it back again is a ton of paperwork and you should wait to see how things are going to work out before burying yourself in that. Doing it twice in two years would be a real pig.
You will probably end up paying more tax doing it that way as Canadian rates are higher but unless you're in a high tax bracket it's usually worth it.
Bear in mind if you moved to the US this year, you have to file dual-status this year and also file a pro-rated T1 for the portion of the year you were in Canada (if you want to move your tax home to the US). IRS publication 519 explains how to do this and the general guide for the T1 return. So three tax returns. Which like I say is a real pig, because say you moved back to Canada in the middle of next year, you would have to file three tax returns, a 1040-C and a FinCEN form and various other things in 2010.
If you contribute to an RRSP or an RESP it buggers that up too.
In fact if you moved to the US during 2008, and then your wife starts work in Canada before the end of this year, you actually have to file dual-status in the US and Canada, so it's four pro-rated tax returns. I.e.: a 1040NR and a T1 covering the portion of the year you were in Canada, and a 1040 and a non-resident T1 for the remainder of the year.
Not something to volunteer for unless you're going to save a lot of money doing it that way.
Steve.