Actually on the CTR it follows the SS #s so if you have 3 businesses with the same ID # on all of them and make a deposit in each and they total up to 10,000 + the bank has to do a CTR. And if you do smaller deposits close together one of the higher up offices calls and asks the teller all sorts of questions on why you might be taking that amount of money out or where you got it. And if you buy a monetary instrument (money order, cashier's check, etc) with cash for $3000 and up the SAR has to be done too. Lots of reporting has to be done. Lots and lots and lots. The Patriot act did this. They say they are trying to make sure there is no money laundering going on. Drug money, money to terrorist organizations.