First, the decision to file a SAR shouldn't hinge on whether there is a loss. If there is suspected fraud and the amount meets the reporting threshold, then a SAR should be filed whether there's a loss or not. And the decision to file, as you pointed out, should depend on the circumstances involved. I have not filed a SAR on every returned check, but only when the circumstances made me suspect there was fraud involved. For example, a new customer deposits a large check, transfers the money somewhere else shortly thereafter, then the check is returned NSF and we are unable to contact the customer. In that instance I would file a SAR for suspected check fraud.
_________________________
CRCM, CAFP, DAD