Customers will pay the flat fee per transaction every time they use USSD services with effect from yesterday.
This was disclosed in a statement jointly issued by the apex bank and the Nigerian Communications Commission.
The deal was part of an agreement reached with banks following a disagreement between banks and telecom firms over USSD and other text message transaction requests.
The Federal Government had last week asked telecommunication operators to put on hold, their impending suspension of USSD services over the N42bn debt owed by banks.