Estera Sava, Senior Writer at The Paypers, examines the latest developments in real-time payment (RTP) schemes and infrastructure, analysing their impact on B2B payments and payouts.
In payments, speed isn’t the selling point it once was. In 2026, instant payment schemes that truly differentiate themselves add value beyond speed: transaction screening, cross-border functionality, and the ability of the initially consumer-focused infrastructure to handle B2B payment volumes quickly and without issues.
SCT Inst Rulebook update: faster execution and higher transaction limits
Within the Eurozone, the SCT Inst scheme has changed considerably. The 2025 SCT Inst rulebook update cut the execution window from 10-20-25 seconds to 5-7-9 seconds, added millisecond timestamp attributes, and removed the SCT Inst EUR 100,000 default cap, allowing PSPs to define transaction limits up to the SEPA ones – a change enabling B2B use cases instant rails couldn’t previously touch. Structured address format requirements, initially mandatory by 15 November 2026, have been delayed because the industry is not yet prepared to implement them, and SWIFT will provide updates by December 2026. Payee verification and daily sanctions screening are now required, even though screening alone can’t slow down the payment.
One-Leg Out (OLO) Instant Credit Transfer (OCT Inst): rules for cross-border SEPA payments
OCT Inst covers the EUR leg of cross-border transfers, where one payment side is outside the Eurozone. It reuses existing instant payment rails and messaging standards, giving payers and payees clearer execution timelines and better cost transparency on cross-border legs. The two schemes diverge in several ways: OCT Instant transactions have an EUR 100,000 limit, far below SCT Inst’s no scheme-level limit, reflecting the uncertainty and correspondent-banking dependencies once a payment leaves the Eurozone. The European Payments Council (EPC) published dedicated comparison documentation that clarifies the differences fully – useful reading for PSPs trying to work out which rulebook governs a given transaction.
FedNow, RTP, and the UK’s Faster Payments reset
In the US, the two instant rails now focus on scalability. FedNow lifted its per-payment limit to USD 10 million in 2025 and recorded 1,800 participating institutions in Q2 2026. RTP continues to lead on daily transaction values, averaging USD 6.6 billion as of August 2026. More than half of US banks leveraging instant payments run both networks, which suggests reach matters to institutions just as much as any individual rail’s feature. The two systems are still not interoperable, and this missing functionality, along with the ‘receive-only’ capability of smaller institutions that joined without enabling sending, is a key constraint to further growth.
Meanwhile, the UK shows how much harder full infrastructure replacement can be. The New Payments Architecture (NPA), a years-delayed programme meant to replace the country’s ageing Faster Payments rail, was reset in favour of a broader, government-led body, the Retail Payments Infrastructure Board (RPIB), after repeated delays and mixed confidence. The RPIB opened a public consultation in mid-2026 on a next-generation system to support the National Payments Vision and the Payments Vision Delivery Committee’s modernisation strategy, with responses due in September 2026. The existing rail will keep running past its original retirement date, and its replacement must account for a landscape that may eventually include stablecoins or a CBDC alongside conventional transfers.
B2B real-time payments: cash flow vs fraud and error risk
It’s easy to see why B2B real-time payments (RTPs) are beneficial. Funds arrive immediately, with instant confirmation, and two-way messaging automates buyer-to-seller payment requests, reducing the once-common manual reconciliation burden. On the liquidity side, account-to-account (A2A) payments and payment APIs cut the working capital needed to cover payment delays and other operational inefficiencies. With RTPs, money that would be in transit for days is visible and usable as soon as it clears.
The downside of this real-time element is that once an instant payment settles, it does so for good. With legacy rails’ multi-day processing, businesses could catch errors before this happened; however, RTPs put far more weight on validation and fraud checks in the seconds before initiation. It’s no surprise that every RTP scheme’s decision centres on balancing instant money movement with ensuring it settles where it’s supposed to.
Instant payouts: meeting consumer demand where scheme coverage can’t
Oftentimes, payments and payouts are seen as addressing the same issues, but payouts have their own urgency. Users expect withdrawals, refunds, and disbursements to arrive in seconds now more than ever. A Visa 2025 survey supports this with clear data: over 80% of respondents would pay a fee if instant payouts were a guarantee, and 90 to over 95% (in countries where instant payments are the norm) prioritise quick access to funds.
Europe’s instant payment landscape is still fragmented across national rails, and bank readiness levels aren’t where they need to be, so providers have built proprietary networks, some leveraging blockchain, to route around those gaps rather than wait for banks to catch up. This approach says as much about scheme-based coverage limits as it does about payout technology, even if it isn’t yet the industry norm.
In Europe, ‘instant’ means several distinct things depending on where a payment starts and ends, making OCT Inst highly relevant for cross-border transactions. The US is finding its way, currently scaling two rails that don’t connect. The UK is revamping its approach, and a new, long-awaited development is underway: Canada is launching its Real-Time Rail (RTR) in Q4 2026.
This editorial piece was first published in The Paypers' Account-to-Account Payments Report 2026, which features insights into global trends, technologies, partnerships, and the next phase of the A2A evolution. Access the full report to understand where the A2A payments ecosystem stands today and what’s next.
About the author
Estera Sava is a Senior Writer at The Paypers, bringing her expertise in content creation and editorial processes to the Audience team. Focusing on the ever-evolving fintech and payments landscape, she is involved in various high-impact projects and industry reports and coordinates the annual Account-to-Account Payments reports. Through her proactive approach and dedication, Estera helps drive the success of The Paypers' initiatives.
