Answer: YES. ALL income must be reported, including income from illegal activities, including blackmail, theft, embezzlement, kickbacks, etc.
You include this income on Form 1040, line 21, or on Schedule C or Schedule C-EZ, if you are self-employed in illegal activities.
Publication 17 - Chapter 12
http://irs.gov
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Conversations On the Internet In Reference to the Above Subject:
Report
all your income and after you weasel your way out of the criminal charges, you
can't be accused of tax-evasion.