Economy
API Architecture: The Invisible Engine Powering Modern Banking
By Echezona Agubata
Banking has evolved far beyond the days of paper ledgers and long queues. Today, it’s a dynamic force driving Nigeria’s economy, responding to customers in real time, and powering digital innovation. The unsung hero behind this transformation is the Application Programming Interface (API)—a tool that lets bank systems communicate seamlessly with each other and external partners.
In Nigeria’s fast-growing digital finance landscape, APIs are the invisible engine enabling banks to offer instant balance checks, process payments at retail checkouts, or verify identities for loan approvals. The secret to their success? A robust API architecture, the structured framework that makes banking secure, scalable, and innovative.
Picture API architecture as a bridge connecting islands of financial services. It allows banks to share data securely. In Nigeria, where digital banking is literarily booming, APIs let banks like Coronation Merchant Bank expand services without rebuilding infrastructure. This flexibility fuels innovation, enabling tailored solutions for everyone from small businesses to large corporations.
The Central Bank of Nigeria (CBN) along with Industry players ensure this ecosystem is secure and trustworthy. Its regulations mandate standards like OAuth 2.0 for authentication, tokenization to protect data, and encrypted channels to safeguard transactions. Real-time monitoring and customer consent protocols further build trust, ensuring data is shared only with permission. These rules aren’t just technical or ethical—they’re the backbone of Nigeria’s open banking system, fostering collaboration and innovation.
How do APIs work? Imagine a well-orchestrated machine. The API acts as
● A Gateway: the gatekeeper to a product. It authenticates requests and ensures only authorized people are granted access to the product. It also helps limit the number of requests that can be made for the product at any given time. For instance, when a bank’s mobile app requests a customer’s transaction history, the transaction history API (as a gateway) verifies access (both customer and mobile app) before treating the transaction history request.
- A Guide: the protocol or security who ensures that even authenticated users are only allowed to access products and data that they are authorized to have
- A Funnell: the pipe that ensures that authenticated users access products and data from known locations/sources to known destinations
- An Agent: the agent that ensures that applications regardless of the service offering have access to data/products in the same way as every other application. This gives unified experience across respective platforms that are consuming the service/data offered by the API
Here’s a simplified view of the flow:

Explanation: An app or corporate system sends a request to the API gateway, which authenticates and routes it. The orchestration layer processes it using endpoints, pulling data from the core system via middleware.
The orchestration layer (behind the gateway) breaks services—like catalog, shopping cart, or ordering—into modular endpoints, like building blocks online shops can share securely. The modular endpoints connect these APIs to core systems, translating the requests into formats that can be processed by the core system. Companies also provide developer portals with clear documentation and sandbox environments, simplifying integration for partners.
This architecture can be built for scale. Banks process millions of transactions daily using load balancing to scale out resources, and distribute traffic in a dynamic fashion. This architecture could incorporate the use of in-memory databases and Queueing technologies to cache frequently used data for swifter processing. More so, this introduces rate limiting features which help isolate any problem areas without affecting the entire service as a whole.
Challenges abound. One of such is the existence of legacy systems as many banks and organizations often rely on decades-old mainframes (core systems), thus requiring a middleware solution to bridge old and new systems—a complex but critical step. Another recent challenge is the need to enforce data privacy expectations, this has made encryption and data masking a necessary action. Encryption in itself comes with its own attendant side-effects especially where applied on data without proper service governance. It can slow performance, so banks and organizations use caching and optimized data flows to balance speed and security. Compliance with CBN guidelines and Nigeria’s data privacy laws demands robust
consent management and audit trails. Versioning APIs (e.g., /v1/payments) prevents disruptions when systems evolve.
Real-world examples highlight APIs’ impact. Coronation Merchant Bank built the Dangote ISOP Collection API to streamline payments for Dangote’s distributors. These payments were previously riddled with slow reconciliations and delayed cash flow. The API integrates payments directly into Dangote’s ERP system and thereby automating the process, reducing errors, and strengthening business ties. Another bank used a KYC API to verify customer identities for loan applications, cutting onboarding time while meeting CBN standards. A third example involves a major Nigerian bank’s payment API, which enables instant corporate transfers for retailers, ensuring funds clear in seconds during peak sales.
APIs are also driving open finance. The CBN’s 2023 guidelines expand APIs to cover credit, investment, and insurance data, enabling embedded finance—loans at retail checkouts or savings tools linked to salary accounts. This makes banking invisible yet ever-present, blending into daily life.
The future is exciting. Banks are adopting API-first design, prioritizing APIs as core interfaces for faster innovation. AI-driven APIs are emerging, enabling fraud detection or tailored loan offers. Blockchain-based APIs promise secure cross-border payments. Event-driven architectures, using tools like Kafka, process real-time events like transaction alerts, boosting efficiency.
At Coronation Merchant Bank, our APIs are business enablers. Our custom solutions, like the Dangote integration, solve real-world problems, while our investment banking desk advises on capital raising and partnerships, helping clients stay competitive. APIs lower barriers, drive growth, and deliver seamless experiences for customers.
Nigeria’s financial future isn’t about who holds the most assets—it’s about who builds the strongest connections between data, money, and people. API architecture is the invisible engine powering that future, creating a connected, inclusive banking ecosystem.
Economy
UK Backs Nigeria With Two Flagship Economic Reform Programmes
By Adedapo Adesanya
The United Kingdom via the British High Commission in Abuja has launched two flagship economic reform programmes – the Nigeria Economic Stability & Transformation (NEST) programme and the Nigeria Public Finance Facility (NPFF) -as part of efforts to support Nigeria’s economic reform and growth agenda.
Backed by a £12.4 million UK investment, NEST and NPFF sit at the centre of the UK-Nigeria mutual growth partnership and support Nigeria’s efforts to strengthen macroeconomic stability, improve fiscal resilience, and create a more competitive environment for investment and private-sector growth.
Speaking at the launch, Cynthia Rowe, Head of Development Cooperation at the British High Commission in Abuja, said, “These two programmes sit at the heart of our economic development cooperation with Nigeria. They reflect a shared commitment to strengthening the fundamentals that matter most for our stability, confidence, and long-term growth.”
The launch followed the inaugural meeting of the Joint UK-Nigeria Steering Committee, which endorsed the approach of both programmes and confirmed strong alignment between the UK and Nigeria on priority areas for delivery.
Representing the Government of Nigeria, Special Adviser to the President of Nigeria on Finance and the Economy, Mrs Sanyade Okoli, welcomed the collaboration, touting it as crucial to current, critical reforms.
“We welcome the United Kingdom’s support through these new programmes as a strong demonstration of our shared commitment to Nigeria’s economic stability and long-term prosperity. At a time when we are implementing critical reforms to strengthen fiscal resilience, improve macroeconomic stability, and unlock inclusive growth, this partnership will provide valuable technical support. Together, we are laying the foundation for a more resilient economy that delivers sustainable development and improved livelihoods for all Nigerians.”
On his part, Mr Jonny Baxter, British Deputy High Commissioner in Lagos, highlighted the significance of the programmes within the wider UK-Nigeria mutual growth partnership.
“NEST and NPFF are central to our shared approach to strengthening the foundations that underpin long-term economic prosperity. They sit firmly within the UK-Nigeria mutual growth partnership.”
Economy
MTN Nigeria, SMEDAN to Boost SME Digital Growth
By Aduragbemi Omiyale
A strategic partnership aimed at accelerating the growth, digital capacity, and sustainability of Nigeria’s 40 million Micro, Small and Medium Enterprises (MSMEs) has been signed by MTN Nigeria and the Small and Medium Enterprises Development Agency of Nigeria (SMEDAN).
The collaboration will feature joint initiatives focused on digital inclusion, financial access, capacity building, and providing verified information for MSMEs.
With millions of small businesses depending on accurate guidance and easy-to-access support, MTN and SMEDAN say their shared platform will address gaps in communication, misinformation, and access to opportunities.
At the formal signing of the Memorandum of Understanding (MoU) on Thursday, November 27, 2025, in Lagos, the stage was set for the immediate roll-out of tools, content, and resources that will support MSMEs nationwide.
The chief operating officer of MTN Nigeria, Mr Ayham Moussa, reiterated the company’s commitment to supporting Nigeria’s economic development, stating that MSMEs are the lifeline of Nigeria’s economy.
“SMEs are the backbone of the economy and the backbone of employment in Nigeria. We are delighted to power SMEDAN’s platform and provide tools that help MSMEs reach customers, obtain funding, and access wider markets. This collaboration serves both our business and social development objectives,” he stated.
Also, the Chief Enterprise Business Officer of MTN Nigeria, Ms Lynda Saint-Nwafor, described the MoU as a tool to “meet SMEs at the point of their needs,” noting that nano, micro, small, and medium businesses each require different resources to scale.
“Some SMEs need guidance, some need resources; others need opportunities or workforce support. This platform allows them to access whatever they need. We are committed to identifying opportunities across financial inclusion, digital inclusion, and capacity building that help SMEs to scale,” she noted.
Also commenting, the Director General of SMEDAN, Mr Charles Odii, emphasised the significance of the collaboration, noting that the agency cannot meet its mandate without leveraging technology and private-sector expertise.
“We have approximately 40 million MSMEs in Nigeria, and only about 400 SMEDAN staff. We cannot fulfil our mandate without technology, data, and strong partners.
“MTN already has the infrastructure and tools to support MSMEs from payments to identity, hosting, learning, and more. With this partnership, we are confident we can achieve in a short time what would have taken years,” he disclosed.
Mr Odii highlighted that the SMEDAN-MTN collaboration would support businesses across their growth needs, guided by their four-point GROW model – Guidance, Resources, Opportunities, and Workforce Development.
He added that SMEDAN has already created over 100,000 jobs within its two-year administration and expects the partnership to significantly boost job creation, business expansion, and nationwide enterprise modernisation.
Economy
NGX Seeks Suspension of New Capital Gains Tax
By Adedapo Adesanya
The Nigerian Exchange (NGX) Limited is seeking review of the controversial Capital Gains Tax increase, fearing it will chase away foreign investors from the country’s capital market.
Nigeria’s new tax regime, which takes effect from January 1, 2026, represents one of the most significant changes to Nigeria’s tax system in recent years.
Under the new rules, the flat 10 per cent Capital Gains Tax rate has been replaced by progressive income tax rates ranging from zero to 30 per cent, depending on an investor’s overall income or profit level while large corporate investors will see the top rate reduced to 25 per cent as part of a wider corporate tax reform.
The chief executive of NGX, Mr Jude Chiemeka, said in a Bloomberg interview in Kigali, Rwanda that there should be a “removal of the capital gains tax completely, or perhaps deferring it for five years.”
According to him, Nigeria, having a higher Capital Gains Tax, will make investors redirect asset allocation to frontier markets and “countries that have less tax.”
“From a capital flow perspective, we should be concerned because all these international portfolio managers that invest across frontier markets will certainly go to where the cost of investing is not so burdensome,” the CEO said, as per Bloomberg. “That is really the angle one will look at it from.”
Meanwhile, the policy has been defended by the chairman of the Presidential Fiscal Policy and Tax Reforms Committee, Mr Taiwo Oyedele, who noted that the new tax will make investing in the capital market more attractive by reducing risks, promoting fairness, and simplifying compliance.
He noted that the framework allows investors to deduct legitimate costs such as brokerage fees, regulatory charges, realised capital losses, margin interest, and foreign exchange losses directly tied to investments, thereby ensuring that they are not taxed when operating at a loss.
Mr Oyedele also said the reforms introduced a more inclusive approach to taxation by exempting several categories of investors and transactions.
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