Open Banking Statistics That Reveal How Fast Financial Data Sharing Is Growing

The most telling open banking statistics point to one number: 16.5 million UK consumers were actively sharing financial data through open banking APIs by December 2025, a 36% jump from the year before, according to Open Banking Limited. That single growth figure answers whether financial data sharing is becoming mainstream, but it doesn’t tell you whether to trust it with your own money. The factor that swings that decision most is the reliability of the infrastructure behind the hype, measured by API uptime and real‑world payment performance.

By April 2025, the UK’s open banking network was processing 351 million payment transactions a year, up 57% year‑on‑year, while total API calls crossed 24.0 billion. That scale makes the service too big for traditional banks to ignore, and too important for consumers to dismiss out of hand.

How Many People Actually Use Open Banking?

The UK added 4.4 million active open banking users in 2025, reaching 16.5 million, while globally the number of users hit 183 million, a figure Juniper Research expects to exceed 645 million by 2029. That means roughly one in four UK adults now actively connects their bank data to a third‑party service.

A 36% year‑on‑year increase signals that open banking has moved from early adopters into the early majority. The 24.0 billion successful API calls logged in 2025 equate to an average of 65.75 million per day, everything from balance checks to instant loan decisions that once took days. That infrastructure is now woven into services like mortgage approvals using open banking data, where lenders pull real‑time income and expense streams instead of relying on outdated payslips. Providers like SoFi and Experian have already built open banking data feeds directly into their credit underwriting workflows, replacing the traditional FICO Score pull with a live DTI calculation based on verified bank transactions.

Consumer adoption still outpaces business use, but the gap is narrowing. The Office for National Statistics estimates that roughly 10% of UK SMEs now use open banking for accounting or loan applications, a figure that doubled in two years.

One honest caveat: awareness has not kept pace with adoption. Only 36% of UK adults could identify open banking by name in 2024, meaning millions of people use the technology without knowing they’re doing so. That gap matters because uninformed users are less likely to audit which third-party providers hold access to their data, or to revoke permissions they no longer need.

Can You Trust Open Banking APIs to Be Reliable?

The UK’s open banking APIs delivered weighted availability above 99.5% throughout 2025 even as call volumes surged 27% year‑on‑year. Response times remained a brisk 324ms on average, according to Open Banking Limited’s monthly performance dashboards, meaning a data retrieval feels nearly instantaneous for users. The Financial Conduct Authority (FCA) enforces mandatory API performance standards, giving it a hard compliance stick to wield against underperforming institutions.

That uptime is not academic. A network processing 65.75 million calls a day can’t afford more than a few minutes of total downtime each month. The last multi‑hour outage involving a major UK bank’s open banking interface occurred in late 2023; since then, redundancy and real‑time monitoring have kept interruptions short and localised. Real‑time fraud detection systems add another layer, flagging abnormal API access patterns before they escalate.

The reliability sits on top of each bank’s own core systems, though. If a legacy banking platform goes down, its open banking APIs go with it. That interdependence means the advertised 99.5% reflects an aggregate across the network, not a guarantee for every individual bank. JPMorgan Chase and Wells Fargo, both building their own proprietary API gateways ahead of the CFPB’s Section 1033 compliance deadline, face exactly this risk: their open banking uptime will only ever be as good as their core infrastructure allows. For most consumers, the day‑to‑day experience is now indistinguishable from using the bank’s own app, just faster and often more functional.

How Fast Are Open Banking Payments Growing?

Transactions jumped from 224 million in 2024 to 351 million in 2025, a 57% increase that far outpaced traditional Faster Payments growth. Variable recurring payments (VRPs) now make up 16% of all open banking payments, showing the technology moving well beyond basic account information services into recurring bill management and subscription payments.

March 2025 alone saw 31 million open banking payment transactions, roughly 1 in 27 of all UK Faster Payments that month. The gap with the card networks is closing because merchants pay as little as 20p per transaction versus the typical 1–3% card interchange. For a small business processing £50,000 a month in card revenue, routing even half of that through open banking saves around £1,000 a month, enough to cover a part‑time employee’s salary. Merchants using payment initiation service (PIS) providers like TrueLayer and Token.io report those numbers in real time.

The stickiness of VRPs is what changes the long‑term outlook. A subscription payment set up as a variable recurring payment can pull the exact amount each month without requiring the customer to re‑authenticate, mimicking direct debits but with more consumer control. This use case, not one‑off e‑commerce, is what Pay.UK projects will push open banking payment volumes above 500 million in the UK by the end of 2026. Many consumers already use it without realising: when you link a bank account to an investment app or to an AI‑powered credit scoring tool, the underlying connection is often an open banking PIS or AIS call.

VRPs are not universally supported yet, and that is a real constraint. Major UK high-street banks have rolled them out unevenly, and smaller building societies are sometimes absent from provider networks entirely. For a merchant or fintech counting on VRP availability across its full customer base, patchy bank participation remains a genuine operational headache.

Where Is Open Banking Adoption Growing Fastest?

The UK still leads with 16.5 million users and 24.0 billion API calls in 2025, but Brazil’s open finance ecosystem is closing the gap fast. Mandated by the Banco Central do Brasil since 2021, the Brazilian framework processed over 22 billion API calls in 2024 and now counts more than 800 million active data‑sharing consents. Brazil’s model covers bank accounts, investments, insurance, and pensions, a broader scope than the UK’s focus on current accounts and credit cards, which has driven adoption across a wider demographic. Open finance consents in Brazil passed 1 billion in early 2025.

The US is poised for acceleration. The CFPB finalized its Section 1033 rule in 2024, which will require banks to offer standardized data‑sharing interfaces by 2026. Early moves by JPMorgan Chase and Wells Fargo to build their own API gateways suggest that once the compliance deadline lands, the US will add tens of millions of users quickly. The Federal Reserve and the FDIC are both monitoring the rollout, particularly around liability standards when a data breach occurs on a third-party platform rather than at the bank itself. That liability question remains unsettled under current US law, and it is one reason some large banks have been slow to cooperate voluntarily ahead of the mandate.

In Europe, PSD2 laid the groundwork but fragmented implementation across 27 countries has slowed uptake. Tink’s 2024 survey found that 55% of EU consumers use at least one open banking service, a figure that rises above 70% in the Nordics. Australia’s Consumer Data Right is gathering pace, though its opt‑in design has kept user numbers modest compared with mandate-driven markets. The global picture is one of rapid, uneven expansion: Juniper Research’s forecast of 645 million users by 2029 is plausible given that the number of API calls across leading markets doubles roughly every 18 months. Credit bureaus like Experian are already integrating open banking feeds to supplement traditional FICO Score data, particularly for thin-file borrowers who lack enough credit history to generate a reliable APR estimate through conventional means.

Open Banking Limited’s CEO Henk Van Hulle noted in the organization’s 2025 outlook that the mandated UK approach has provided a blueprint for more than 60 other jurisdictions, and that interoperability across borders will be a defining challenge for the year ahead as the industry looks to enable cross-border data sharing at scale, according to Open Banking Limited’s expert predictions report.

Who Should and Who Should Not

Good candidates

You’re likely to benefit from open banking if you value convenience and your financial life already involves multiple digital services.

• A UK consumer who wants to see all bank accounts and credit cards in one app, the infrastructure is proven with 16.5M peers already doing it
• A freelancer or small business looking to cut card processing fees, shifting 30% of revenue to open banking payments can save £1,500+ a year
• Someone who needs faster loan approvals: lenders using open banking data often make decisions in seconds, not days
• An expat managing accounts across two countries, where open banking APIs allow cross‑border aggregation (especially in the EU)

Who should skip it

If your financial routine is simple and you’re uncomfortable with even minimal data sharing, the marginal benefit may not justify the effort.

• Consumers in regions with no strong open banking regulation, the legal fallback is often unclear if something goes wrong
• Those who are extremely risk‑averse about data breaches: while secure, no system is breach‑proof
• People who only use one bank and rarely log in to check balances, the value add is minimal
• Seniors who prefer in‑person banking and aren’t comfortable with app‑based finance

Frequently Asked Questions

How many people use open banking worldwide?

183 million individuals globally used open banking services in 2025, with the UK alone accounting for 16.5 million of those users. Juniper Research projects that number will surpass 645 million by 2029.

Is open banking safe from fraud?

Open banking reduces certain types of fraud by using tokenized, read‑only access that doesn’t expose login credentials. The FCA monitors providers, and the UK network hasn’t experienced a mass credential theft incident; however, weak implementation by a fintech could introduce risks.

What is the growth rate of open banking payments?

UK open banking payment transactions grew 57% year‑on‑year in 2025 to 351 million, while API calls increased 27% to 24.0 billion. This suggests a rapid shift from information retrieval to actual money movement.

Which countries have the most advanced open banking systems?

The UK, Brazil, and the EU lead in terms of regulatory frameworks and user adoption. Australia and Canada are building momentum, while the US is expected to catch up after the CFPB’s 2024 open banking rule takes full effect.