Reference stack

Add open banking payments

An account-to-account payment stack covering payment initiation, consent, bank connectivity, account verification and reconciliation.

MerchantsPlatformsBillers

Intended audience and markets

Audience

MerchantsPlatformsBillers

Markets

United KingdomEuropean Economic AreaSelected open-banking markets

Infrastructure layers

Payment initiation

Required

Initiate customer-authorised account-to-account payments.

Selection criteria

PISP coverage and legal entity
Bank reach
Payment status and refund model

Provider options

Account verification and data

Optional

Verify account ownership and obtain data needed for risk or reconciliation.

Selection criteria

Verification method
Consent and refresh
Data normalisation

Provider options

Consent and user experience

Required

Present bank selection, consent and redirect or embedded flows.

Selection criteria

Conversion and accessibility
Consent evidence
Fallback behaviour

Provider options

Reconciliation and risk

Required

Match payment outcomes to orders and detect abuse.

Selection criteria

End-to-end reference
Pending and failed states
Fraud and refund controls

Provider options

Implementation sequence

Payment initiation
Account verification and data
Consent and user experience
Reconciliation and risk

Regulatory considerations

Payment-initiation permissions and consumer protections vary by market.
Variable recurring payments and similar products are not uniformly available.

Technical considerations

Design for asynchronous status, bank downtime and user abandonment.
Do not treat an initiation response as final settlement.

Questions to ask providers

Which legal entity contracts for each service and in which jurisdictions?
Which responsibilities remain with the product operator rather than the provider?
What are the implementation, approval, testing and migration timelines?
How are incidents, exits, data portability and business continuity handled?
How are refunds, returns and mistaken payments handled?

What this stack does not cover

Card acceptance and direct-debit mandates are separate rails.

Related stacks

Reviewed on 2026-07-07.

Provider options are examples of infrastructure roles, not endorsements or a guarantee of suitability, availability or regulatory compliance. Confirm requirements for your product with each provider and qualified advisers.