Source Microfinance Bank: Building NIBSS Connectivity Designed to Evolve

When a newly licensed bank begins operations in Nigeria, integration with the Nigeria Inter-Bank Settlement System (NIBSS) is not a feature. It is the foundation.

Without NIBSS connectivity, a bank cannot send or receive interbank transfers, validate customer identities through BVN, or participate in the national clearing ecosystem.

For Source Microfinance Bank (Source MFB), this integration was not simply a compliance requirement. It was the gateway to becoming a fully operational financial institution from day one.

The objective was clear: go live correctly, go live confidently, and build on infrastructure that would not require rebuilding as the ecosystem evolved.

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The challenge

As a newly licensed microfinance bank authorised to accept deposits and facilitate transfers, Source MFB needed to:

• Connect to the NIBSS central switch
• Enable inbound and outbound interbank transfers
• Activate BVN verification
• Participate in QR-based payments
• Enable mandate-based debit services
• Integrate all services seamlessly into its core banking platform

Without these integrations, the bank could not operate as a fully connected financial institution.

The challenge was not just to integrate, but to do so in a way that would remain extensible as NIBSS introduced new standards and frameworks over time.

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The solution: deploying NIBSS-in-a-Box

Assurdly deployed its proprietary NIBSS-in-a-Box solution to accelerate integration and reduce technical complexity.

Rather than building each NIBSS rail independently, we implemented a structured integration layer that connected directly to NIBSS and interfaced cleanly with the bank’s core system. The goal was not merely speed, but architectural durability.

Core services implemented

• NIP (Inward and Outward): Enabled real-time interbank transfers, allowing the bank to send and receive funds across all Nigerian banks immediately upon launch.
• Easypay: Implemented as a structured interbank funds transfer rail within the NIBSS ecosystem. Easypay provides the underlying transfer mechanism leveraged in defined debit and credit workflows across institutions.
• IGREE and ICAD: Enabled BVN-based identity verification and account discovery. Through BVN validation, the bank could confirm customer identity in real time. ICAD further allowed the retrieval of bank accounts associated with a BVN, where required for regulated processes.
• NQR: Activated participation in Nigeria’s interoperable QR framework, positioning the bank for digital payment use cases from the outset.

Mandate services: Enabled structured recurring and institutional debit workflows. Mandate services allow customers to authorise recurring or scheduled debits in accordance with defined compliance rules. Once authorised, debit execution leverages the Easypay rail within the NIBSS framework, enabling regulated direct debit processing across participating institutions.

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Outcome at launch

Source MFB moved from licensing to live participation in Nigeria’s interbank ecosystem on infrastructure designed to scale, not stagnate.

Continuous evolution beyond go-live

The true test of infrastructure is not initial deployment. It is how it adapts when the ecosystem changes.

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Mandate Management Service Version 2

In late 2024, NIBSS deprecated its Central Mandate Management System platform and introduced an enhanced mandate management framework. Institutions were required to build and manage their own mandate user journeys while maintaining compliance with updated integration standards.

Because Assurdly architected the original deployment, Source MFB engaged us again to extend the solution rather than replace it.

We upgraded their environment and transitioned them to the new mandate service framework within weeks, ensuring:

• Continued compliance
• Zero operational disruption
• Seamless migration from legacy structure

The initial architecture proved extensible.

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NPS integration

In mid 2025, NIBSS introduced the Nigeria Payment System, known as the National Payment Stack (NPS).

NPS standardises payment descriptions and remittance data structures, ensuring consistency in how transaction information is transmitted between local institutions and international payment networks. It represents a shift toward greater interoperability and messaging clarity across payment rails.

Again, Source MFB did not need to rebuild. We extended the existing integration layer to support the new standard, aligning their infrastructure with evolving national and cross-border payment requirements.

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Conclusion

This engagement demonstrates more than technical execution. It reflects how Assurdly approaches regulated infrastructure integration. We design for durability, not just deployment.

For financial institutions, connectivity is not a one-time milestone. Payment ecosystems evolve, standards shift, and compliance frameworks expand. Infrastructure must evolve with them.

Source Microfinance Bank’s journey shows that when integration is architected correctly from the start, expansion becomes extension rather than reinvention.

That is the difference between implementation and partnership.