Open Banking: How Sharing Your Financial Data Securely Benefits You

Open banking is one of the most significant structural changes to retail and private banking in a generation, yet it remains poorly understood by many of the internationally mobile professionals who stand to benefit most from it. The core principle is deceptively simple: your financial data belongs to you, and you should be able to share it — securely, selectively, and revocably — with third parties of your choosing.

This guide explains what open banking is, how it works technically, the consumer benefits it enables, the security framework that governs it, and where the technology is headed next.

Important: Open banking rules, participating institutions, and third-party app availability evolve continuously. Verify current product availability and security credentials before connecting any third-party application to your bank account.

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What Is Open Banking?

Open banking is a regulatory and technical framework that requires banks to open up their customer account data — and the ability to initiate payments — to authorised third-party providers (TPPs) via standardised Application Programming Interfaces (APIs).

In the United Kingdom, open banking was mandated by two parallel regulatory initiatives. The Competition and Markets Authority (CMA) issued an order in 2016 requiring the nine largest UK banks (the "CMA9" — including Lloyds, Barclays, HSBC, NatWest, Santander, and others) to implement open banking APIs by January 2018. Simultaneously, the Financial Conduct Authority (FCA) transposed the EU's Payment Services Directive 2 (PSD2) into UK law, creating the legal basis for TPPs to access account data and initiate payments with customer consent.

The governing body established to oversee implementation was Open Banking Limited (OBIE), which published the technical standards, managed the directory of authorised TPPs, and monitored compliance. Following a review in 2023, OBIE transitioned to a new entity, the Joint Regulatory Oversight Committee (JROC), which is developing the next phase of open banking under the umbrella of the UK Government's broader Smart Data agenda.

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The Two Types of Open Banking Service

Account Information Service Providers (AISPs) are authorised to read your account data — transaction history, balances, account details — with your consent. They cannot move money; they can only see.

Payment Initiation Service Providers (PISPs) are authorised to initiate payments from your bank account on your behalf — again, with your explicit consent. They instruct your bank to make a payment; your bank executes it and retains liability for fraudulent transactions.

Many open banking apps are both AISPs and PISPs, offering account aggregation and payment initiation in a single platform.

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Consumer Benefits

Account Aggregation

The most immediately visible benefit for HNW and internationally mobile clients is account aggregation: the ability to see all your financial accounts — current accounts, savings accounts, investment accounts, mortgages, credit cards — in a single interface, regardless of which bank holds them.

Apps such as Moneyhub, Emma, Cleo, and Snoop connect to your various UK bank accounts via open banking APIs and present your consolidated financial position in one dashboard. For a professional who holds accounts at Barclays (current), HSBC Premier (savings), a broker (ISA), and Paragon (buy-to-let mortgage), this is enormously practical — no more logging into four separate banking apps to understand the overall picture.

For internationally mobile clients with accounts in multiple countries, the limitation is that open banking APIs are currently UK- and EU-focused. Your HSBC Expat Jersey account, your Emirates NBD account, and your Cypriot bank account cannot be aggregated via UK open banking. However, some apps are developing proprietary international account connections outside the regulated open banking framework.

Budgeting and Spending Insights

Open banking apps categorise your transactions automatically, identifying patterns that are difficult to see from a bank statement alone: recurring subscriptions, restaurant spending, travel costs. For clients managing costs across multiple jurisdictions, the categorisation of foreign currency transactions is particularly useful.

Payment Initiation

Payment Initiation Services (PIS) allow you to pay directly from your bank account on third-party websites and apps, bypassing card networks. The practical benefits are:

• No card fees: Payment initiation incurs no interchange fee (the card scheme fee that merchants pay — typically 0.3-1.5% for debit cards). Some merchants pass this saving to the consumer.
• Instant settlement: Bank-to-bank payments settle in seconds via Faster Payments.
• No card data at the merchant: Your card number is never transmitted; there is nothing to steal from the merchant's system.

Adoption is growing in the UK — HMRC accepts tax payments via open banking, and a growing number of property transactions use it for deposit transfers.

Improved Access to Credit

Open banking is changing how lenders assess creditworthiness. Traditionally, lenders relied on credit bureau scores (Experian, Equifax, TransUnion) based on repayment history on credit products. Open banking allows lenders to access 12 months of actual transaction data — salary receipts, rent payments, utility bills, discretionary spending — with the applicant's consent.

This is significant for:

• Self-employed individuals: Whose income may not appear cleanly on a payslip but is clearly visible in transaction history.
• Newly arrived expats: Who have limited UK credit history but demonstrably regular income.
• Entrepreneurs: Who take variable income that credit scores penalise but open banking data contextualises.

Several UK mortgage lenders and challenger banks now use open banking in their credit assessment processes.

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The Security Framework

Open banking security is built on several layers:

Explicit consent: You must actively authorise each third-party application. The authorisation is granted through your bank's own security systems — you log in to your bank, which then grants the third party a time-limited, scoped access token. You never share your banking password with the third party.

OAuth 2.0 protocol: The technical standard governing the consent process ensures that access tokens are specific to the application, the account, and the time period. A token granted to a budgeting app cannot be used to initiate payments unless you separately authorise payment initiation.

Time-limited and revocable access: Open banking data consents typically run for 90 days, after which they must be reconfirmed. Since FCA rule changes that UK banks implemented by 30 September 2022, you no longer have to re-authenticate at your bank every 90 days; instead you simply reconfirm consent directly with the third-party provider, who can then continue accessing your data. You can revoke consent at any time — either through the third-party app or directly through your bank. Most UK banks now provide a consent dashboard showing which apps have access to which accounts.

Read-only by default: Data access (AISP) never grants the ability to move money. Payment initiation (PISP) is a separate, separately authorised capability.

Bank liability retention: If a fraudulent payment is initiated via a payment initiation service, your bank retains liability for the transaction — the same protection as if the payment had been made directly. The third-party provider carries regulatory and financial responsibility for its role.

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The Future of Open Banking

Variable Recurring Payments

Variable Recurring Payments (VRPs) are the most significant near-term development. Standard standing orders are fixed-amount, fixed-date payments. VRPs allow pre-authorised, variable-amount payments within agreed parameters — for example, a utility company could collect exactly what you owe each month rather than a fixed estimated direct debit.

VRPs replace direct debits with a more flexible, consumer-controlled mechanism. The first phase (mandatory VRPs for "sweeping" — moving money between your own accounts at different banks) launched in 2022. Commercial VRPs for third-party payments are in development.

Open Finance

Open banking applies to bank accounts. Open Finance extends the principle to all regulated financial products: investments, pensions, mortgages, insurance, consumer credit. The goal is a single, consented, real-time view of your entire financial life.

For HNW clients with complex financial lives — a UK pension, an offshore bond, a buy-to-let mortgage, an investment ISA, a life insurance policy — open finance would allow a wealth manager or financial planning app to view the consolidated picture with a single consent.

The Smart Data Initiative

The UK Government's Digital Information and Smart Data Bill extends open banking principles beyond financial services: energy smart data, telecommunications data, and other regulated sectors. The long-term vision is a UK where consumers have genuine data portability across all regulated sectors.

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Practical Steps for Internationally Mobile Clients

If you have multiple UK bank accounts, connect them to a reputable aggregation app to gain a consolidated view. Moneyhub and Emma are established, FCA-authorised AISPs. Review the consent you grant carefully — understand what data you are sharing and for how long.

If you are applying for a UK mortgage or credit product, ask the lender whether they offer an open banking assessment route. If they do, consenting to share 12 months of transaction history can significantly strengthen an application where your income profile is complex.

Review the consent dashboard in your UK banking app periodically to ensure you have not left dormant open banking consents in place for apps you no longer use.

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How Global Investments Can Help

Global Investments advises internationally mobile professionals on structuring their UK and international financial arrangements efficiently. As open banking tools mature, the ability to maintain a coherent view of assets, income, and liabilities across multiple jurisdictions becomes increasingly important to sound financial planning.

We can connect you with wealth management platforms and private banking services that leverage open banking data to provide a cleaner picture of your overall financial position — particularly useful during a UK property purchase or investment restructuring. Contact us to discuss how your banking arrangements can be optimised for your circumstances.

This guide is for general educational purposes only and does not constitute financial or regulatory advice. Always verify current open banking rules, app authorisations, and security credentials independently.