What Is Open Banking?
Open banking is a system of permissioned access to bank accounts and payment functions. Third-party services connect to banks through secure APIs, receive only the data authorized by the customer, and can initiate account-to-account payments. How open banking differs from traditional payment methods:
- Money route: Confirmation happens in the payer’s banking app,
funds move from account to account.Card schemes add the network,
issuer, and acquirer. So the path has more steps and more complexity
- Cost and speed: The transfer runs on bank rails, fees are usually lower,
settlement is faster. Card payments include interchange
and network fees, and funds can be placed on hold
- Control and data: Access is granted with explicit consent, scope and
duration can be limited, permission is easy to revoke.
In traditional flows data is fragmented, and statuses and transaction fees are less transparent
- Multiple payment options are available: card, digital wallet, bank transfer via
Open Banking, bill payment, and Buy Now Pay Later.
APIs are also a core distinction. These interfaces create a common language of commands and formats, so integrations are predictable and safe. Data access is protected by encryption, authentication, and audit, and is issued strictly within the consent. This exchange accelerates payments and accounting automation, and makes it easier to launch new financial services.
How Open Banking Payments Work
Open Bankingrun through secure APIs that create a direct link between the merchant and the payer’s bank. A PISP, a service that initiates a transfer with the customer’s consent and returns the status to the merchant, handles the request. The PISP does not hold funds and does not payment process card data.
A simple look at the steps and safeguards:
Choose the payment method: The customer selects Open Banking at checkout
Redirect to the bank: The PISP securely redirects the customer to the bank’s app or website
Authorize the payment: The customer authenticates with the bank’s standard methods, for example Face ID, fingerprint, or password. This follows strong customer authentication rules
Initiate and move the funds: After approval, the PISP submits the instruction. The bank debits the customer’s account and credits the merchant’s account
Send the status back: The merchant receives the result via API, and the order moves to fulfillment
Data security: The flow bypasses traditional payment gateways, and no card details are entered or stored by the merchant. Access to the account and operations is controlled by the bank and by customer consent
Benefits
These payments can deliver practical gains for merchants and customers. Secure APIs replace manual card entry and move money account to account with bank-grade authentication.
Security
No card numbers are typed, stored, or transmitted by the merchant. Approval happens in the bank’s app with strong authentication such as biometrics or one-time codes. Fewer exposed credentials means a smaller attack surface.
Reduced costs
Transfers use bank rails, so scheme and interchange fees do not apply. Processing and chargeback management costs can differ from card flows. Overall cost per transaction often changes in favor of high-ticket or high-volume businesses.
Faster settlement and cash flow
Where instant payment rails exist, funds can clear quickly, sometimes in seconds. Faster settlement improves working capital and enables time-sensitive use cases such as instant refunds or immediate account funding.
Checkout and conversion
Fewer fields and a familiar bank login reduce friction at checkout. Clear status messages lower abandonment and support straightforward customer support.
Data-driven services
With explicit consent, limited account data can verify ownership, confirm balances, and detect anomalies. The same signals help tailor financial products without exposing full credentials.
Thanks to ongoing technological development, convenience for customers has grown, and popularity has followed. Which shifts are easy to notice?
First, authentication is now handled by smartphone-native technologies. Face ID and fingerprint scanners replace manual entry of payment credentials. The customer takes fewer steps, and conversion improves for the business. Second, permissions have become more transparent because APIs and consent protocols have structured access to accounts. This has also sped up error resolution.
Another strong factor is the reduction in settlement time to minutes or even seconds. This became possible with the expansion of instant rails. Not only settlement but also refunds have become faster. Money moves more quickly, which makes Open Banking highly convenient and increasingly popular.
Open Banking vs Traditional Payment Methods
Differences arise from architecture. Open Banking relies on customer consent and bank APIs, funds move account to account, the bank performs authentication. Card payments run through networks with multiple participants: issuer, acquirer, and card network. Because the foundations differ, the steps, data fields, fees, and speed also differ.
How they differ in practice:
-
Money flow. In Open Banking the transfer is initiated via API and authorized in
the payer’s banking app, in card schemes the network,
issuer, and acquirer are involved, the route is longer
-
Data entry. Open Banking does not require entering card number, expiry, or CVV,
so manual input is minimal. It is especially seamless for recurring payments
such as subscriptions, invoice installments, and regular top-ups, because consented
mandates remove repeated credential entry
-
Security. The bank authenticates the customer with biometrics or one-time codes,
the merchant does not hold card data, in card models breaches often relate to stored credentials
-
Fees. Bank rails remove interchange and network assessments, overall cost is often lower,
card transactions include interchange, assessment, and service fees
-
Settlement speed. With instant rails funds can arrive almost immediately,
card settlement can take from one to several business days.
Examples of Open Banking Services
Online purchases increasingly happen without entering card details. The checkout offers to pay from a bank account, the confirmation goes to the banking app, and the funds reach the settlement account quickly. The form is shorter and clearer, and the process avoids extra steps.
In an investing service, the top-up button works as simply as unlocking a phone. Funds are credited almost immediately, so the first trade does not get postponed. Utility bills and invoices paid by link go through in one motion, statuses appear right away and do not raise questions.
Consent-based data access adds useful capabilities. The app retrieves statements, sorts expenses into categories, and highlights key trends. Before debiting, the system verifies account ownership and available balance, so errors occur less often and support resolves requests faster. Onboarding speeds up thanks to automatic confirmation of account details and part of the transaction history.
The same technological base helps with large-volume operations and real-time scenarios. An API creates a batch of payouts to suppliers, each operation receives its own status, and accounting sees those statuses directly in the ERP, which closes reconciliation without manual effort. Connecting to instant rails reduces crediting time to minutes and seconds, which enables instant refunds, quick wallet top-ups, and same-day partner revenue transfers.
A PISP initiates the transfer with the customer’s consent and sends statuses back to the merchant. An AISP provides account financial data for scoring, budgeting, and personalized offers. API aggregators connect many banks through a single interface, monitor availability and updates, and remove integration overhead for the business. As a result, payments, data, and accounting move in sync, and the service becomes more transparent for both the customer and the finance team.
Open Banking Regulations and Security
In the EU, PSD2 is in force. The regulation defines the roles of PISPs and AISPs, introduces customer consent, and mandates Strong Customer Authentication. In the United Kingdom, the CMA coordinates requirements through the Open Banking standard, which sets API formats and the procedure for granting and revoking permissions. These frameworks create a common language for banks and fintechs and also check participants for compliance.
Another question is how security and authentication protect the customer. Here it is important to note that access is granted by consent, limited in scope, and time bound. Payment service approval takes place in the banking app with biometrics or a one-time code, which is SCA. Data is transmitted over encrypted channels, tokens are used instead of passwords, and keys and certificates are validated at every step. The merchant does not enter or store card details, so the extra attack surface disappears.
The Future of Open Banking
The future of open banking looks like everyday normal, not an experiment. Banking apps are becoming a primary place to pay, instant rails cut the path of money to seconds, and API standards are maturing instead of blocking integration. Regulators refine the rules, and the market adopts request-to-pay and consent-managed recurring debits. The result is faster movement of funds, clearer statuses, and control that stays with the customer.
The technology base turns into a source of products rather than a constraint. Real time enables refunds without delay, instant account top-ups, and balance checks before debiting without manual reviews. Consent-based data access strengthens fraud controls and supports services that match real needs, without long forms or unnecessary questions.
That is why more companies use open banking at checkout. Cards remain important, yet bank-to-bank wins where speed, transparency, and control matter most. The practical path: enable the method, watch conversion and cash flow, and double down on what performs. From this toolkit, a durable advantage emerges for the product and for customers.