A report a reporting entity must submit under AML/CTF Act if they have reasonable grounds to suspect that a transaction may be related to money laundering, terrorism financing, tax evasion, proceeds of crime or any other serious crimes under Australian law. An SMR must also be submitted if the reporting entity has reasonable grounds to suspect the customer or an agent of the customer is not who they say they are.
See
AML/CTF Act 2006 section 41 (1)