Changing consumer behaviour, broadening of payment rails and rising cost pressure on merchants, is finally pushing real-time account-to-account (A2A) payments into the retail spotlight. This real-time payment evolution is significantly changing consumer habits. In 2026, they’re poised to make their biggest leap yet onto the high street.
This shift isn’t just another new payment method for the checkout. It could change the way value flows through the retail chain and how merchants run their business finances.
Across markets, the rails for real-time A2A are rapidly maturing
In Europe, the SEPA Instant Payments Regulation has already made instant bank transfers a standard, always-on service. The European Payments Initiative’s new instant-payment digital wallet, Wero, builds directly on that foundation and is now rolling out across the continent. It brings P2P, online, and soon in-store payments onto the same unified A2A infrastructure. For merchants, it creates a pan-European, low-cost, real-time payment option increasingly available at the POS.
In the UK, the Bank of England has been modernising its real-time gross settlement (RTGS) platform and opening access to more non-bank payment institutions. Combined with the migration to ISO 20022 messaging standards, real-time settlement becomes more reliable, data-rich, and interoperable. Meanwhile, in the US, FedNow adoption is accelerating, creating early momentum in B2C and retail flows.
Together, these shifts are paving the way for real-time A2A payments to move from online channels into physical retail where the impact will be felt most.
Are consumers ready for the change?
Absolutely. Real-time A2A payments don’t need to win consumer trust, they already have it. Open banking adoption is accelerating, with 183 million users globally today and 645 million projected by 2029.
For consumers who already approve payments through their banking app, “pay by account” feels intuitive, secure, and familiar. Bringing that same experience in-store requires almost no behavioural shift and creates virtually no extra friction at the sales point.
Real-time means real control for shoppers
Contactless card taps may be fast, but the after-effects are often slow. Lengthy waits for refunds, delayed statements, and for settlement running on bank hours.
Real-time changes the experience entirely. A shopper returning an item can see the refund land before leaving the counter. Their app updates instantly. Authentication happens through a channel they trust.
These moments of immediacy and transparency could start to differentiate retailers competing for loyalty in a real-time world.
Powerful incentives for merchants
Card acceptance costs continue to rise, with processing and scheme fees cutting deeper into margins. A2A offers a practical alternative: fewer intermediaries, no interchange, and more predictable pricing. Reports from the retail sector already show growing interest in shifting even a portion of payments to lower-cost rails.
Real-time settlement aids merchant cashflow as money arrives in seconds, not days. For high-turnover businesses like hospitality, grocery, quick-service restaurants, that speed improves liquidity, reduces reliance on credit, and ends the daily reconciliation drag.
Operationally, the shift to ISO 20022 provides richer transaction data, making reconciliation simpler and reducing the administrative overhead that often plagues back-office teams.
Embedded finance is pulling A2A into the POS
The rapid rise of embedded finance is another force pushing real-time payments onto the shop floor. Retailers increasingly integrate payments, loyalty programs, customer identity, credit, and wallets directly into their digital and in-store journeys.
Real-time payments power these experiences seamlessly with instant wallet top-ups, real-time loyalty redemption, immediate pay-outs for returns or deposits, and smooth omni-channel journeys where the customer experience remains consistent whether they’re online or in a physical store.
Fraud protection has caught up to real-time
The early scepticism around instant payments being “too fast for fraud teams to keep up” is fading. Banks and payment providers are deploying hybrid AI models that score transactions in milliseconds, and new regulations are strengthening consumer protections around authorised push payments.
Combined with richer ISO 20022 data, 2026 becomes the first year in which real-time A2A feels not only viable but safe for high-volume in-store retail.
What this means for the POS
The POS terminal is no longer just a device for card acceptance. It’s now the orchestration point for multiple payment rails, card, wallet, bank, and whichever flows consumers adopt next.
Real-time A2A requires POS systems to support in-store bank authentication, offer seamless QR or tap-to-pay journeys, enable instant refunds, and integrate tightly with loyalty programs and CRM data.
Merchants will look for POS partners like Castles Technology who can deliver these capabilities without complexity, compromise, or risk.
POS solutions that can embrace this shift will become central to the new, real-time retail economy. Without them, merchants will remain anchored to legacy rails while the rest of the market moves forward.
The quiet revolution will get louder
The shift to real-time in-store won’t be marked by a single announcement. It will appear in subtle moments: refunds that land instantly, smoother checkouts, cleaner books, and merchants ending the day with cash already in their accounts.
At Castles Technology, we welcome the arrival of real-time, especially on the high street, and to hospitality and travel. We will continue to work with customers and partners to ensure electronic payments fulfil their promise of speed, convenience, and accessibility for all.
Find out more about Castles Technology Innovation here. https://www.castlestech.com/
