1040 or 1040NR?

I am a Canadian resident working in the US 300 days a year.
My company filed a 1040NR for me for the past 3 years.
This year i received my Green Card and would like to file my own return.

1. Do I file a 1040 or 1040NR?
2. Can I still take advantage of the Tax Treaty benefits I had previously?

You are residnt of US, becuase of GC, and should file 1040 now.

I am a Los Angeles based Attorney and CPA who handles cross-border US-Canadian tax matters. Feel free to reach me through this site if you need assistance with your US and/or Canadian tax filings.

Hi there,

I started working in US last APR via TN visa. My spouse came to join me later last year with TD visa.

So I have been in US more than 200 days.

Should I file 1040 or 1040NR? If 1040NR, can I file it as joint?

My spouse has no US income, but she and I had some Canadian income for the first a few months in 2010. Will our Canadian income be taxed by IRS as oversea income?

We want to keep our tax home as Canada for 2010. So we shall report my US income to CRA, right?

Thanks.

You have left canada, so you should be filing as departed resident (emigrant) from canada. You cannot keep your tax home in Canada, because you left.

The best way to file in US is joint full year 1040, exempting your Cdn wages.

You cannot file 1040NR, because you have been in US too long.

read up on this at forums.serbinski.com