CBN Implements Lifetime Limit on BVN Phone Number Changes to Strengthen Banking Security
The Central Bank of Nigeria (CBN) has announced a groundbreaking new regulation that restricts how often Nigerians can alter the phone number associated with their Bank Verification Number (BVN). According to a circular issued to banks and financial institutions on Thursday, this change can now only be made once in a lifetime, a move aimed at bolstering security in the country's rapidly expanding digital payments landscape.
New Rule Takes Effect from May 1, 2026
The directive, which will be enforced starting May 1, 2026, applies to customers of major banks such as Access Bank, Zenith Bank, United Bank for Africa, and all other licensed financial institutions operating in Nigeria. The CBN emphasized that this policy is designed to combat fraud by closing a critical loophole often exploited by criminals through SIM swap schemes and social engineering tactics.
Why Phone Numbers Are Crucial in BVN Security
Phone numbers linked to BVNs play a pivotal role in Nigeria's banking infrastructure, serving as key tools for one-time passwords (OTPs), transaction alerts, and account recovery processes. By limiting the frequency of changes, the CBN aims to reduce risks associated with identity manipulation and SIM-related fraud, which have become increasingly prevalent as digital banking adoption grows across the nation.
Introduction of Temporary BVN Watchlists
In addition to the phone number restriction, the CBN has mandated banks to establish temporary watchlists for BVNs flagged for suspicious activity. Under this framework, a BVN can remain on the watchlist for up to 24 hours while the customer is contacted to verify transactions. This mechanism allows banks to pause transaction processes, providing time to investigate potential fraud before funds are transferred, thereby acting as an early warning system against fraudulent activities.
Broader Efforts to Curb Fraud in Nigeria's Payment System
This latest directive is part of a wider initiative by the CBN to tighten security across Nigeria's banking and fintech ecosystem. Industry data reveals that social engineering schemes remain the leading cause of fraud in the country, with the Nigeria Inter-Bank Settlement System reporting 62,901 fraud cases in 2023, many involving compromised mobile numbers. The circular also reiterates that BVN enrolment is restricted to individuals aged 18 and above, and access to BVN database information is limited strictly to licensed financial institutions.
Enhancing Trust in Digital Financial Infrastructure
With digital payments experiencing rapid growth in Nigeria, regulators assert that stronger Know Your Customer (KYC) rules and tighter BVN controls are essential for safeguarding customers and maintaining trust in the financial system. The BVN, introduced in 2014, serves as the foundational identity platform for Nigeria's financial services sector, with enrolment reaching 68.59 million Nigerians as of March 2026, according to TechCabal. The CBN believes that these enhanced measures will strengthen the integrity of the country's digital financial infrastructure, ensuring greater protection for all bank customers.
