Executive Summary
For much of the past decade, open banking has been framed primarily as a regulatory initiative. Governments introduced policies designed to give consumers greater control over their financial data, while banks focused on compliance with emerging standards.
However, regulation alone does not create an open banking ecosystem.
The real challenge lies in building the infrastructure required for institutions to exchange financial data securely, reliably, and at scale. APIs, identity frameworks, consent systems, and interoperability standards must operate consistently across banks, fintech firms, and regulators. Without this underlying infrastructure, the promise of open banking remains largely theoretical.
In 2026, many markets are entering the phase where these systems are being implemented in practice. Canada’s consumer driven banking framework has begun its initial rollout, enabling read access to financial data through standardised APIs, while further phases are expected to introduce payment initiation capabilities. At the same time, more mature ecosystems such as the United Kingdom continue to expand, with open banking connections reaching approximately 16.5 million by late 2025.
These developments suggest that the strategic question for financial institutions is changing. The issue is no longer whether open banking will emerge, but how institutions design the infrastructure required to participate effectively.
Banks that treat open banking as foundational financial infrastructure rather than a narrow compliance exercise will be better positioned to participate in the next phase of financial services, including embedded finance, data driven personalisation, and new forms of account to account payments.
The Evolution of Open Banking Ecosystems
One useful way to understand the development of open banking is to view it as a sequence of stages.
Each stage builds on the previous one, and progress depends on the successful development of the underlying layer.
Regulation establishes the legal and governance framework that defines how financial data can be shared. It clarifies consumer rights, defines liability structures, and determines which organisations are permitted to access the ecosystem.
Infrastructure translates those rules into operational systems. APIs, authentication frameworks, consent management platforms, and monitoring tools allow institutions to exchange data securely and reliably.
Once these systems are in place, an ecosystem begins to emerge. Banks, fintech firms, and technology providers build services on top of shared infrastructure, integrating financial data into new products and customer experiences.
Only at this stage does meaningful innovation begin to appear. Personal financial management tools, embedded finance services, and account to account payment models become possible because the infrastructure supporting them already exists.
Many discussions about open banking focus on the final stage, where new financial products are created. However the earlier layers are often more important. Without reliable infrastructure and shared standards, the ecosystem cannot function effectively.
For financial institutions, this perspective highlights an important strategic reality. The most significant value in open banking is unlikely to come from compliance or even from the initial infrastructure itself. It will come from the services and ecosystems that infrastructure enables over time.
Regulation as the Starting Point
Most open banking initiatives begin with regulation that defines consumer rights over financial data. These policies typically establish mechanisms that allow individuals to share their financial information with accredited third parties through secure channels.
Canada’s consumer driven banking framework follows this approach. After several years of policy development, the framework prioritises secure API based data sharing and aims to reduce reliance on older techniques such as screen scraping. The first phase, enabling read access to financial data, began rolling out in early 2026. Later phases are expected to expand capabilities to include payment initiation and other forms of write access.
Regulatory frameworks such as these play an essential role in establishing trust and governance. They define who can access financial data, how that access is authorised, and how liability is allocated across the ecosystem.
However, regulation by itself does not create a functioning market.
For open banking to operate effectively, institutions must build systems that allow large numbers of participants to exchange information reliably. This requires a shared technical foundation that supports secure communication, consistent data formats, and strong authentication.
In other words, regulation defines the rules of the ecosystem, but infrastructure determines whether the ecosystem works.
Infrastructure as the Core of the Ecosystem
Once regulatory frameworks are established, attention shifts towards the systems that allow open banking to function operationally.
These systems form the backbone of the ecosystem and typically include several key components:
- API platforms that expose financial data in standardised formats
- Consent management systems that allow consumers to control how their information is shared
- Identity and authentication frameworks that verify participants and secure transactions
- Monitoring and governance systems that maintain reliability and compliance across ecosystems, often supported by secure testing environments and infrastructure platforms.
Each component must operate across institutions that often have very different legacy architectures. As a result, interoperability becomes one of the most important design challenges.
Unlike traditional banking infrastructure, which operates primarily within individual institutions, open banking requires coordination across an entire network of participants.
Markets that have addressed this challenge successfully tend to share one common feature. They establish clear technical standards early and ensure those standards are implemented consistently across participants. In practice this often requires shared testing environments where institutions can validate integrations before production deployment.
Brazil’s open finance ecosystem illustrates this dynamic. The combination of standardised APIs and the Pix instant payments infrastructure created the conditions for rapid adoption of account to account payments and new financial services.
The lesson is straightforward. Open banking succeeds when institutions treat infrastructure as a shared system rather than a collection of isolated projects.
Standards and Interoperability Matter
Standards play a critical role in enabling open banking ecosystems to scale.
Without common technical standards, each institution would expose financial data in different formats and with different authentication mechanisms. This would make integration complex and limit ecosystem growth.
Successful ecosystems therefore rely on shared frameworks that define how systems interact.
These typically include:
- Standardised API specifications that ensure consistent data structures
- Authentication and security protocols that protect sensitive information
- Accreditation frameworks that determine which organisations can access the ecosystem
Where these standards are widely adopted, integration becomes significantly easier and new services can be developed more quickly.
The experience of leading markets illustrates the importance of this coordination.
| Market | Ecosystem Characteristic | Strategic Insight |
|---|---|---|
| United Kingdom | Early regulatory framework with strong API standards | Early infrastructure investment accelerated ecosystem growth |
| Brazil | Expansion from open banking to open finance | Integrated payment infrastructure accelerated adoption |
| Australia | Gradual rollout through the Consumer Data Right | Phased implementation allowed institutions to adapt systems |
As Canada’s ecosystem continues to develop, alignment around standards will play a central role in determining how quickly new services emerge.
Ecosystem Development Takes Time
Open banking ecosystems do not emerge immediately after regulation is introduced.
Developing a functioning ecosystem requires several stages:
- institutions must modernise legacy systems
- participants must establish trust frameworks
- standards must be implemented consistently
- developers must build new products on top of shared infrastructure
These processes take time. However once ecosystems reach a certain level of maturity, innovation can accelerate quickly.
In more developed markets open banking has enabled a range of new financial services including personal finance tools, alternative lending models, and account to account payment solutions.
The key observation is that value tends to emerge gradually. Infrastructure must first reach a level of reliability that allows institutions and developers to build services with confidence.
Strategic Implications for Financial Institutions
The shift towards open banking infrastructure carries several implications for banking leaders.
First, infrastructure investment is becoming increasingly important, particularly in areas such as API testing, ecosystem onboarding, and controlled environments for evaluating new financial technologies. Institutions that modernise their API capabilities and data infrastructure early will find it easier to integrate with emerging ecosystems.
Second, participation in industry standards bodies and technical working groups is likely to become strategically valuable. Shared standards determine how ecosystems evolve.
Third, partnerships between banks, fintech firms, and infrastructure providers will play an increasingly important role in shaping new services.
The most successful institutions will likely be those that approach open banking not as a regulatory requirement but as an opportunity to redesign how financial services are delivered.
From Open Banking to Open Finance
In many markets open banking represents only the first stage of a broader transformation.
Once infrastructure for secure data sharing is established, similar principles can be extended beyond current accounts to other financial products such as investments, insurance, and pensions.
This broader model is often referred to as open finance.
Brazil’s experience demonstrates how expanding the scope of data sharing can enable more integrated financial services. Similar discussions are emerging in several other markets.
Over time the boundary between financial institutions and technology platforms may become increasingly fluid as data flows more freely across the ecosystem.
Conclusion
Open banking began as a regulatory initiative designed to give consumers greater control over their financial data.
It is now evolving into something more fundamental.
As infrastructure develops and standards mature, open banking is becoming a foundational layer of financial services. The institutions that recognise this shift early and invest in the systems required to support it will be better positioned to participate in the next generation of financial innovation.
Regulation defines the framework. Infrastructure determines how the system functions.
And over time the institutions that build reliable infrastructure will shape the future of the ecosystem.
