What is Open Banking?
Open Banking is a regulatory framework requiring banks to let you share your own account data with, or initiate payments through, authorised third parties — securely, and with your explicit consent.
The problem it solved. Historically your bank held your transaction data and no one else could access it without you handing over your login details, which was insecure and against terms. Open Banking created a proper mechanism: standardised APIs through which regulated firms can connect with your permission, without ever seeing your credentials.
It originated in the UK from a Competition and Markets Authority order in 2016 and the EU's second Payment Services Directive (PSD2), both intended to increase competition by breaking the banks' monopoly on customer data.
Two capabilities:
Account Information Services (AIS) — read access to balances and transactions. This underpins budgeting apps that aggregate multiple accounts, accounting software pulling transactions automatically, lenders and landlords verifying income directly rather than via statements, and comparison services analysing your actual usage.
Payment Initiation Services (PIS) — initiating a payment directly from your account. This allows paying a merchant by bank transfer instead of by card, bypassing card networks and their fees, which is why it appeals to merchants.
The safeguards:
Only FCA-authorised firms may participate, and you can check the register.
Consent is explicit, time-limited and revocable. Access typically expires and must be renewed, and you can withdraw it through your bank or the provider.
Credentials are never shared. Authentication happens on your bank's own screen.
Liability protections for unauthorised transactions apply as they do to other payments.
Reasonable cautions: check the firm is authorised; understand what data you are granting and for how long; and review connected apps periodically, since permissions accumulate and are forgotten.
"Open Finance" proposes extending the model to mortgages, pensions and investments.