Is Pay by Bank Safe? UK Merchant Security Guide

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Is Pay by Bank safe for a UK merchant checkout?
Pay by Bank uses an open-banking payment journey in which the customer authorises a payment through their bank. Its security depends on the specific provider, bank-authentication journey and transaction context, so merchants should distinguish this checkout flow from an unsupported bank transfer to an unknown recipient.

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Key Takeaways
Why Merchants Ask: Is Pay by Bank Safe?
The Payment Journey
How Pay by Bank Security Works
Is Open Banking Safe in the UK?
FAQ

Key Takeaways

Pay by Bank uses an open banking payment journey in which the customer authorises a payment through their bank.
A Pay by Bank checkout should be distinguished from manually sending a bank transfer to an unknown recipient.
Merchants should clearly explain what customers can expect during authentication, payment confirmation and fulfilment.
Payment authentication and confirmation do not by themselves guarantee fraud prevention, delivery, refunds or other payment outcomes.
The security of a Pay by Bank payment depends on the specific payment journey, provider, bank and transaction context.

Why UK Merchants Are Asking: Is Pay by Bank Safe?

With the rise of open banking across ecommerce, more merchants are asking: is Pay by Bank safe? Is open banking legit in the UK? Is Wall ID secure?

These are fair questions—especially for Shopify merchants in regulated industries like CBD, vape, and supplements, where compliance and fraud prevention are critical.

PAY BY BANK CHECKOUT

How the payment journey works

The customer moves from checkout to their bank, authorises the payment, and the merchant receives the relevant payment result.

Customer chooses Pay by Bank

Pay by Bank is selected as the payment method at checkout.

Customer continues to their bank

The customer follows the applicable bank payment flow.

Customer authenticates

The customer authenticates through their bank using the applicable authentication process.

Payment is authorised

The customer reviews and authorises the payment through the bank journey.

Merchant receives the payment result

The relevant payment result is communicated to the merchant according to the payment flow.

Merchant follows its fulfilment process

The merchant proceeds according to its own approved payment and fulfilment process.

Important: The exact authentication, authorisation and payment-confirmation steps can vary by payment provider and bank.

How Pay by Bank Security Works

Pay by Bank uses an open banking payment journey in which the customer authenticates and authorises a payment through their bank. The exact process can vary depending on the payment provider and bank.

Unlike a traditional card payment, the customer does not enter card details into the merchant checkout. Instead, the customer follows the applicable bank payment journey to authenticate and approve the payment.

The merchant then receives the relevant payment result according to the payment flow. This gives the merchant information about the payment status, but payment confirmation does not by itself guarantee delivery, refunds, fraud prevention or other outcomes.

Is Open Banking Safe in the UK?

Yes. Open banking is regulated under UK law and backed by the country’s biggest banks, including:

Barclays
Lloyds
Starling, and more

Security standards include:

Strong customer authentication (SCA)
End-to-end data encryption
Permission-based consent flows

FAQ

Is Pay by Bank safe to use?

Pay by Bank uses an open banking payment journey in which the customer authenticates and authorises the payment through their bank. Its security depends on the specific payment provider, bank journey and transaction context, so it should not be described as universally risk-free or safe in every situation.

Is Pay by Bank the same as sending a bank transfer?

No. A Pay by Bank checkout is a payment journey initiated through a merchant checkout, where the customer follows the applicable bank authentication and payment-authorisation process. This is different from manually sending money to an unknown bank account.

How does Pay by Bank authentication work?

The customer selects Pay by Bank at checkout and follows the applicable bank payment journey. The customer then authenticates through their bank and authorises the payment. The exact steps can vary depending on the payment provider and bank.

What does payment confirmation mean for a merchant?

Payment confirmation communicates the relevant result of the payment according to the payment flow. Merchants should use the approved confirmation information when deciding whether to proceed with fulfilment and should not treat payment confirmation as a guarantee of delivery, refunds or other outcomes.

Is Pay by Bank safer than card payments?

There is no universal answer. Pay by Bank and card payments use different authentication, authorisation and payment-data journeys. The relevant security considerations depend on the payment method, provider, transaction and applicable protections.

What should a merchant tell customers before they use Pay by Bank?

Merchants should explain that Pay by Bank takes the customer through the applicable bank payment journey, including authentication and payment authorisation. They should also make their refund, delivery and customer-support processes clear so customers understand what happens after payment.

What does Pay by Bank security not guarantee?

A secure payment journey does not by itself guarantee that fraud is impossible, that a transaction will never be disputed, or that a customer will receive a refund or delivery. Those outcomes depend on the transaction, provider, merchant processes and applicable rules.

Is open banking safe in the UK?

Open banking operates within the UK financial-services framework and uses bank-based authentication and consent mechanisms. However, the presence of an open banking framework does not make every transaction automatically safe; merchants should consider the specific provider, payment journey and transaction context.

Expert Note

This article was written by the Wallid team, specialists in open banking and payment infrastructure for UK Shopify merchants. Our team focuses on helping ecommerce businesses understand Pay by Bank, payment workflows, and checkout implementation.