For those of you thinking about filing US income taxes for the first time, I suggest you read the following letter that I received from the IRS in the mail today. I sent my zero return for 2009 last week with a letter explaining why it was late (evidently it did not arrive on time to prevent this mail out). I am on the IRS radar, because I was compliant for about the previous ten years. Moreover, they are apparently aware of certain securities I traded in the US. But I didn’t owe anything on my income tax return. So this is the trouble that they will go to harass Canadian residents who are late filing.