The full form of RFI in a banking context depends on the situation. One possibility is "Request For Information".
Request for Information (RFI)
As the reference explains, a request for information (RFI) is an important part of resolving a disputed transaction. It provides an opportunity to explain your side of the issue to the bank or card issuer.
- Purpose: To allow you to present your version of events concerning a disputed transaction.
Therefore, RFI in banking can stand for Request For Information, particularly when dealing with disputed transactions.