Hi again Steve. I found this article in The International Tax Advisor online and I have to say it has me confused. You definitely seem to know and understand this can you clarify the two paragraphs below that I copied and pasted from the article in how it relates to my situation - particularly the first paragraph of point 2. Many thanks:
Resident Status Under U.S. Tax Law
2. Substantial Presence Test - An individual is a resident under this test if physically present in the U.S. at least 31 days during the current calendar year and 183 or more days during the current and two prior calendar years computed under a “weighted presence formula” (i.e., counting each whole or partial day in the current year as one day, each whole or partial day in the first prior year as 1/3rd of a day, and each whole or partial day in the second prior year as 1/6th of a day). A foreign visitor spending on average four months and two
days a year in the U.S. during a three year period is considered a U.S. tax resident under this test.
Closer Connection Exception - An individual is not treated as a U.S. resident under the substantial presence test if he is present in the U.S. fewer than 183 days in the current year, has a “tax home” in Canada and has a “closer connection” to Canada than to the U.S. An individual cannot assert this exception if he has or intends to apply for a greencard. Even if the requirements of this exception are met, the individual must also timely file a Form 8840 with the IRS. For an individual with a closer connection to Canada, filing Form 8840 merely avoids the “penalty” of not being allowed to assert the exemption (properly filled out it indicates, but does not prove, existence of the closer connection). For an individual without a closer connection to Canada, or with a closer connection to Canada and one other foreign country, filing does not provide any protection at all. Once the IRS receives the Form 8840 it is stamped and returned to the individual. IRS says it does not keep record of forms having been filed so it is important to keep the returned copy in a safe place (for at least three years, but preferably forever) since the burden of proving timely filing is on the taxpayer.
Canada-US Tax Treaty Protection
Taxes It is very important to note that the tax treaty provisions override or modify U.S. (and Canadian) tax laws. Thus, even though a long term Canadian visitor may be considered a U.S. resident under U.S. tax law, dual resident status may be avoided by invoking the treaty. The treaty mandates that a dual resident taxpayer be treated as resident in only one, not both, countries under the “tie-breaker” rule set forth in Article IV.2. which provides that: the individual is deemed a resident of the country in which he has a “permanent home;” if he has a permanent home in both or neither, he is a resident of the country in which he has his “center of vital interests;” if he has his center of vital interests in both or neither, he is a resident of the country in which he has his “habitual abode;” if he has his habitual abode in both or neither, he is a resident of the country of which he is a citizen;” and finally, if he is a citizen of both or neither, he is a resident of the country as agreed to by U.S. and Canadian tax authorities. Form 8833 Required - Even though this alternative may avoid having to rely on timely filing Form 8840, the IRS requires timely filing of Form 8833 “Treaty-Based Return Position.”