Offer your thoughts or opinion on the input financial query or topic using your financial background.

Money Structuring
See "Structuring transactions to evade reporting requirement prohibited." You absolutely run the risk of the accusation of structuring. One can move money via check, direct transfer, etc, all day long, from account to account, and not have a reporting issue. But, cash deposits have a reporting requirement (by the bank) if $10K or over. Very simple, you deposit $5000 today, and $5000 tomorrow. That's structuring, and illegal.  Let me offer a pre-emptive "I don't know what frequency of $10000/X deposits triggers this rule. But, like the Supreme Court's, "We have trouble defining porn, but we know it when we see it. And we're happy to have these cases brought to us," structuring is similarly not 100% definable, else one would shift a bit right." You did not ask, but your friend runs the risk of gift tax issues, as he's not filing the forms to acknowledge once he's over $14,000.