What is a FinCEN identifier?

A “FinCEN identifier” is a unique identifying number that FinCEN will issue to an individual or reporting company upon request after the individual or reporting company provides certain information to FinCEN. An individual or reporting company may only receive one FinCEN identifier. FinCEN’s Small Entity Compliance Guide includes additional information on FinCEN identifiers in Chapter 4.3, “What is a FinCEN identifier and how can I use it?”