According to officials, tips should be submitted with supporting documents. "FinCEN's Office of the Whistleblower is accepting tips involving violations and conspiracies related to the Bank Secrecy Act, U.S. sanctions programs, and several other laws critical to safeguarding the U.S. financial system and national security. "

Individuals who voluntarily provide information about such violations or conspiracies to commit violations may be eligible for awards if the information they provide leads to a successful enforcement action by the Department of the Treasury (Treasury) or the Department of Justice (DOJ) that results in monetary penalties exceeding $1,000,000, and the requirements in 31 U.S.C. § 5323 and its implementing regulation are otherwise met. A copy of the statute is available here. -FINCEN

How much are we talking about? Between 10-30% "of what has been collected of the monetary sanctions imposed in the action or related actions," and it's got to be north of $1 million.