What Is Open Banking? The Four-Step Handshake That Keeps Your Password Private


Your banking password never leaves your bank, yet apps can still read your transactions or take a payment from your account. That is not a loophole. It is the design of a system now used by nearly one in three UK adults.

So what is open banking, and why does it matter for your data? This sector spotlight explains the idea, follows the process step by step, tests the safety claims and ends with habits that keep you in control.

A Permission Slip Sits Between You and Every App

Open banking is a system that lets you permit your bank to share account information with other regulated financial companies, known as third-party providers (TPPs). It began in the UK in early 2018 and runs on APIs, which are secure connections that let a bank and an app exchange only approved information.

Put simply, what is open banking? It is consent turned into a technical standard. Two services sit on top of it. Account information services let an app view balances and transaction history, and about 80% of API traffic relates to them, according to Open Banking Limited (OBL) figures cited by the payments firm Noda. Payment initiation services let a provider send a payment from your account, and in one OBL release payment users made up 55% of users.

Both services follow the same journey, and it is shorter than most people expect.

Four Steps Keep the Password at Home

The process looks like this:

  1. You choose to connect an app or service.
  2. You are redirected to your own bank's login page.
  3. You log in there and approve the request.
  4. The provider receives only the data or payment permission you approved.

Which? stresses that the security details you enter at the bank are not shared with the third party. That is why the market moved away from older credential-sharing approaches towards consent-based access.

I have read this on Entrepreneur Plus, and the part that stays with me is how small the change is: the redirect to your own bank is what separates this from simply handing over a password.

A clever design still needs someone to check who is allowed in.

Regulation Does the Vetting and Consent Does the Rest

In the UK, firms seeking access must be authorised or registered with the Financial Conduct Authority (FCA) and enrolled in the Open Banking Directory, the channel through which banks and providers communicate, according to Which?. Anyone can check a provider on the FCA register.

Consent covers the rest. Each connection needs your explicit approval, payments require strong customer authentication, which is an additional identity check, and consent for a single payment applies to that payment only. You can revoke access at any time through your bank app or the provider's dashboard.

None of this makes the system risk-free. Which? cautions that regulated firms are not immune from cyberattacks. For anyone weighing what is open banking in terms of risk, the honest answer is that it replaces password sharing with verified access, but it cannot stop you approving something you do not understand.

That is why your own habits matter as much as any rule.

Review Habits Matter More Than Any Rule

The strongest protection is regular housekeeping. A short checklist helps:

  • Check the provider on the FCA register or the Open Banking Directory before connecting.
  • Read what data you are asked to share and for how long.
  • Review connected apps in your bank app or the provider's dashboard.
  • Revoke access to services you no longer use.

A startup magazine will often present open banking as a growth story. For the customer, the story is control, and that control only works when you use it. The service itself is free for consumers, though an app built on it may charge for its own product.

Those habits will matter even more as the idea spreads.

Open Finance Will Stretch the Same Permissions Further

OBL reports the UK reached 15.16 million users in July 2025, nearly one in three adults, with services used a record 2.04 billion times that month. It also says the Data Use and Access Act paves the way for open finance and smart data, which extend permission-based sharing beyond current accounts.

One caveat applies. OBL cannot identify individuals who use more than one brand, so its figure counts user connections rather than unique people. If open finance arrives as planned, the answer to what is open banking will broaden, and the same checklist will apply to more of your financial life.

Control Is Real, but Only If You Use It

Open banking keeps your password with your bank, relies on explicit consent and is overseen by the FCA. It also asks for attention from you: check providers, review connections and revoke what you no longer need.

I have read this on Entrepreneur Plus, and my takeaway is that the question of what is open banking ends with a practical answer: a regulated permission system whose safety depends on how carefully you use it.

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