Open Banking

The banking industry has recently seen a new trend emerge that has the potential to transform the banking industry: Open Banking. It provides a secure framework for the exchange of financial data, so that new products can be built for consumers and businesses that solve everyday problems or bring added value to our lives.

Open Banking is a standard that allows third-party payment service providers and other financial service providers to access personal and financial information from banks and financial institutions. This is achieved via an application programming interface (API), which enables third-party developers to build applications and services that interact with a bank's customer data and systems, such as transaction history or account balances.

The APIs allow the posting or creation of transactions without the need for actual funds to be transferred. APIs can also look at a consumer's transaction history to help identify relevant products and services that personalise the customer experience.

Note that before payment service providers can use Open Banking APIs to access customer details, the customer must first grant access for the sharing of their personal information - usually via an online consent form following a terms and conditions agreement. 

Open Banking continues to deliver major benefits for developers, businesses, banks, and customers. Its scope has expanded far beyond its early focus on payments and account aggregation:

• For banks – Open Banking APIs, typically built on OAuth 2.0 and industry security standards, provide a secure and interoperable way to expose banking capabilities. These APIs help modernise legacy systems and enable banks to collaborate with fintechs, e‑commerce platforms and other industries through embedded finance and banking‑as‑a‑service (BaaS) models. This allows non‑financial apps to integrate selected banking services via secure APIs, creating new customer experiences and revenue streams.
• For customers – Consent remains central to Open Banking. Instead of manually sharing statements, users can authorise access through secure online journeys, often using strong customer authentication (for example, biometrics or mobile banking apps). Modern consent flows allow time‑limited and granular permissions – for instance, authorising a budgeting app to access recent transactions, or permitting a retailer to process a one‑off payment. In many markets, secure, standardised API access has reduced the need for older methods such as screen scraping, improving privacy and control.
• For security and trust – Open Banking ecosystems place strong emphasis on security, with requirements covering encryption, secure consent, regulated access for third parties and continuous monitoring. Banks and payment providers increasingly use a combination of rules‑based controls, analytics and, in some cases, machine‑learning‑based fraud detection to help protect customers and institutions from identity theft, payment fraud and unauthorised access.

Overall, Open Banking today is less about simply exposing data and more about enabling a secure, connected and embedded financial ecosystem. It empowers banks to innovate faster, businesses to deliver new services and payment experiences, and customers to benefit from greater convenience, choice and control over how their financial data is used.

Open Banking may have started as a bank‑led initiative, but the ecosystem has expanded into a much more diverse and collaborative landscape. Traditional banks remain crucial, particularly in safeguarding sensitive financial data and ensuring compliance with regulatory standards. Evolving frameworks – such as PSD2/PSD3 in Europe and emerging Open Banking rules in other regions – are strengthening requirements for both banks and fintech providers, helping to maintain consistent levels of security and consumer protection.

At the same time, customers are increasingly turning to fintech‑first solutions – such as neobanks, digital wallets and payment apps – as important financial touchpoints. Many of these services connect to bank data via standardised Open Banking APIs, reducing reliance on older methods like screen scraping, which is being phased out in favour of regulated, API‑based access in many markets.

For financial institutions, Open Banking APIs provide a powerful way to modernise legacy systems and collaborate with fintech and non‑bank platforms. Through embedded finance, banking capabilities can be surfaced directly inside e‑commerce, mobility and other digital experiences, rather than only through a bank’s own channels. As a result, the traditional distinction between “banking app” and “partner app” is blurring, with customers increasingly accessing financial services wherever they are needed.

Looking ahead, Open Banking is increasingly seen as part of a wider move toward Open Finance and Open Data. Open Finance extends secure data sharing to areas such as investments, pensions, savings and insurance, while Open Data explores interoperability beyond banking into other sectors. Alongside this, banks and fintechs are starting to apply analytics and, in some cases, AI‑based models on top of Open Banking data to provide real‑time insights, personalised recommendations and more proactive financial guidance for customers.

Businesses continue to gain significant advantages from Open Banking, and the opportunities extend far beyond simple data sharing:

• Streamlined payments and reduced costs – Open Banking enables account‑to‑account (A2A) payments and other modern payment options that can reduce reliance on traditional card schemes. Companies can benefit from faster settlement, fewer manual processes and lower transaction costs, while customers enjoy simple, secure ways to pay directly from their bank accounts.
• Deeper financial insights with AI – Open Banking gives secure access to up‑to‑date account balances and transaction data, which can be combined with analytics or AI‑based tools to deliver richer insights. Businesses can use this to support cash‑flow forecasting, budgeting, and anomaly detection, helping them make faster and more informed financial decisions.
• Cross-industry collaboration – Open Banking APIs help banks modernise core systems, and the broader ecosystem is evolving toward Open Finance (covering savings, loans, pensions and investments) and Open Data across industries. This creates opportunities for businesses well beyond traditional finance – such as e‑commerce platforms, SaaS providers and mobility apps – to offer embedded financial services like payments, lending or insurance directly within their customer experiences.

Overall, Open Banking represents a mature and integrated framework. For businesses, this means greater agility, new revenue opportunities, and the ability to deliver personalised, data-driven services that rival the capabilities of native financial applications.

Blueberry specialises in building custom software solutions for businesses of all sizes, and we have recently completed a big software project that required Open Banking programming.

Our team of experienced developers can work with you to understand your business needs and develop custom solutions that leverage the power of Open Banking APIs.

Whether you need help integrating your systems with third-party providers, streamlining your payment processes, or developing new applications that take advantage of Open Banking, we can help.

In addition, we can provide guidance on regulatory compliance and ensure that your systems are secure and protected from data breaches.

If you're interested in exploring the opportunities offered by Open Banking, please get in touch. We can provide you with a free consultation and help you to identify the best approach for your business.