How Open Banking Works for UK Consumers and Businesses

Updated

Open Banking in the UK is a system that lets you securely share your bank account data with regulated third-party providers (TPPs) through APIs, so you can access new payment and money-management services without handing over your login details. It applies to UK current accounts, savings accounts and credit cards held at regulated banks and building societies, and it only works when you give explicit consent for a specific provider and purpose. The official body behind the standard is Open Banking Limited (OBL), which runs openbanking.org.uk.

The basic mechanism: consent plus APIs

Under the hood, Open Banking replaces "screen scraping" (where you gave an app your actual bank password) with a standardised, permissioned data connection.

  1. You choose a service — for example, a budgeting app or a merchant's "pay by bank" checkout.
  2. You give consent — you're redirected to your own bank to authenticate directly. Your credentials never go to the third party.
  3. An API call is made — the provider requests only the data or payment action you approved, for a defined period.
  4. You can revoke access — consent is time-limited and can be withdrawn.

The two main service types are:

Service What it does Typical use
Account Information Services (AIS) Reads your account and transaction data Budgeting apps, affordability checks, account aggregation
Payment Initiation Services (PIS) Initiates a payment directly from your account Paying a merchant or person without a card

OBL publishes customer experience guidelines for payment initiation services, which set expectations for how these journeys should look and behave.

Who is involved in the ecosystem

Open Banking is a collaborative model, not a single company. The site describes it as a community of banks and financial institutions, fintechs, and technical service providers working toward delivering open banking-powered products to the UK.

  • Account Providers — banks and building societies offering online payment accounts. They connect to the ecosystem so innovators can build propositions using transaction data.
  • Third Party Providers (TPPs) — fintechs and other regulated firms building the actual services consumers and businesses use.
  • Technical service providers — the infrastructure layer connecting the two.

As of the site's August ecosystem highlights, there were 326 regulated providers, 88 account providers, 238 third party providers, and 140 regulated entities with at least one proposition live with customers. That last figure matters most: it's the number actually delivering something to real users, not just holding a licence.

What consumers and businesses actually get

The practical benefits fall into two buckets.

For consumers:

  • See accounts from multiple banks in one app.
  • Get categorised spending insights and budgeting alerts.
  • Make direct bank payments at checkout without entering card details.
  • Access credit or affordability decisions based on verified data rather than estimates.

For businesses:

  • Accept "pay by bank" payments, which can reduce card processing costs.
  • Reconcile incoming payments automatically by reading transaction data.
  • Run faster, more accurate affordability and onboarding checks.
  • Offer embedded financial features without becoming a bank.

For example, a small retailer adding pay-by-bank at checkout lets a customer approve a transfer inside their own banking app; the retailer gets confirmation via API rather than waiting on card settlement.

How widely it's used

Scale is the clearest signal that this is mainstream rather than experimental. According to the site, UK Open Banking has passed 1 billion payments and 100 billion API calls. OBL also commissioned independent economic analysis by EY — Unlocking the Everyday — which provides a quantified view of the value open banking delivers to consumers, businesses and the wider economy.

Fraud is tracked separately: the Open Banking Payments Fraud Monitor benchmarks fraud trends in open banking payment journeys against wider UK payments industry data, drawing on account providers representing more than 60% of open banking payment volumes.

Where the standard is heading

OBL is supporting an industry-led design process for the Future Entity (FE) — the organisation expected to become the UK's future primary standard setter for Open Banking. If you're building on the standard long-term, that transition is worth tracking, since it will shape who governs future rules and specifications.

How to get started

  • If you're a consumer: check whether your bank appears in your chosen app's list of supported providers, and review what data and duration you're consenting to before approving.
  • If you're a business or developer: the site's Account Providers section and Directory are the entry points for connecting, and the FAQs cover common questions. Joining the ecosystem means meeting the regulatory and technical requirements that apply to your provider type.

The core takeaway: Open Banking gives you control over your own financial data through consent-based APIs, and the UK ecosystem is now large enough — over a billion payments — that it's a realistic option rather than a niche experiment.