A2A Payments at Point of Sale: Where the Economics Work in 2026

Account-to-account payment at the point of sale has been a recurring prediction for a decade. The EU Instant Payments Regulation has now mandated the infrastructure. The UK's open banking framework has 90% consumer awareness of Pay by Bank in 2026 research. eBay UK introduced Pay by Bank at checkout in partnership with TrueLayer. FCA data shows open banking payments grew 53% year-on-year through 2025. And yet, A2A accounts for only around 5% of e-commerce transactions in the UK: one of the most advanced open banking markets in the world. The question for merchants and acquirers is not whether A2A is real, but where it actually replaces cards.

Where A2A is winning

A2A adoption is strongest in the categories where the economics are most compelling and where consumer familiarity with the payment method is highest. The UK Yaspa Index 2026 identifies iGaming, utilities and recurring payments as the categories with fastest adoption. In these categories, merchants can save 1–2% per transaction by avoiding interchange: meaningful in high-volume, margin-thin businesses.

High-value transactions are a particularly compelling use case. FCA research identifies electronics and technology retail, automotive deposits, furniture and homeware purchases above £1,000, and professional services invoice settlement as categories where avoiding 1–2% card processing costs has material impact on margins. In these categories, Pay by Bank removes friction for the merchant without creating significant friction for the consumer: the value is clear and the transaction is high enough that the consumer is already engaged in a considered purchase.

Europe's A2A landscape is developing rapidly. The Banking & Payments Federation of Ireland reports over 1.6 billion contactless POS transactions in Ireland in 2025, alongside Zippay's launch as the first significant Irish A2A payment option. Bizum Pay, the first European A2A payment NFC wallet, is launching in Q2–Q3 2026, enabling in-store NFC payments from bank accounts across participating Spanish banks. The February 2026 European Memorandum of Understanding on interoperable sovereign retail payments signals political momentum behind A2A as a strategic alternative to card scheme dominance.

Where cards retain structural advantages

Consumer protection frameworks, chargeback rights, dispute resolution, Section 75 protections in the UK, are embedded in the card model and valued by consumers. For any transaction where the consumer may want to reverse or dispute, the card model provides infrastructure that A2A currently lacks. This is not primarily a technology problem; it is a regulatory and commercial model problem that the open banking industry is working to solve through Variable Recurring Payments frameworks and commercial dispute resolution services, but these are not yet at parity with card chargebacks.

Cross-border and international transactions remain a significant gap. Cards provide currency conversion, scheme coverage and dispute resolution across markets where A2A rails are fragmented or absent. For merchants with significant international customer bases, cards remain the only viable primary payment method. A2A is a domestic payment instrument in most markets: interoperability across A2A systems in different countries remains a long-term infrastructure challenge.

Consumer familiarity is a paradox: the Yaspa Index finds 90% awareness of Pay by Bank in the UK alongside year-on-year decline in familiarity with the term "open banking". Consumers know they can pay by bank but do not necessarily understand or trust the underlying mechanism. This creates friction at checkout that card payments, with decades of consumer habituation, do not face. Solving this requires sustained merchant investment in the checkout experience, not just technical integration.

The acquirer strategic position

For acquirers, the strategic question is how to position as A2A volumes grow in categories where the economics work. Pure card acquirers face the risk of volume migration in high-value merchant categories where A2A processing costs are materially lower. Acquirers that integrate A2A alongside card acceptance and present merchants with a unified acceptance interface retain the merchant relationship regardless of which payment method is chosen.

The early movers in integrated card-plus-A2A acceptance, embedding Pay by Bank as a primary checkout option alongside card acceptance, are building a structural advantage. The commercial model needs to reflect the economics: merchants gain from A2A's lower processing cost and should be incentivised to promote it, while acquirers capture the relationship and service revenue even as the per-transaction economics differ from card acquiring.

GCC context

In the GCC, A2A payment infrastructure has developed rapidly through domestic instant payment schemes, SARIE in Saudi Arabia, Aani in the UAE, QPay in Qatar. SARIE recorded 42% annual volume growth in 2025. Aani processed over 180 million transactions in its first full year. These are predominantly person-to-person and business payment instruments, with merchant acceptance infrastructure still developing. The regulatory frameworks for open banking in the GCC, SAMA's open banking programme now in full licensing: are establishing the API layer that will enable third-party A2A payment initiation. The commercial model for merchant A2A acceptance in GCC markets is at an earlier stage than Europe and the UK, but the infrastructure foundation is in place.