B2B payments have historically been the least-disrupted segment of the payments market. Card rails are expensive for large-value transactions. BACS and CHAPS work but offer no data richness. International wires are slow, opaque, and carry fees that compound at each correspondent hop. Open banking, real-time payment rails, and a new generation of B2B payment platforms are beginning to change each of these constraints in concrete, measurable ways — though the promise of the technology has consistently outrun the reality of its adoption. The question for businesses evaluating these tools is not what open banking can theoretically do, but what it does today, reliably, at scale.

The Open Banking B2B Case

Open banking's primary B2B application is in account information: connecting accounting software, treasury management systems, and cash flow forecasting tools to live bank account data without manual export or re-keying. For a business managing accounts across multiple banks in multiple currencies, automated account aggregation reduces treasury reporting from a daily manual process to a continuous automated feed. The time saving is real and the data quality improvement is significant — balance positions are live rather than T+1, and the reconciliation logic runs against actual transaction data rather than bank statements.

Payment initiation via open banking — using a PISP connection to initiate a payment directly from a bank account — is less uniformly useful for B2B than for consumer payments. The primary benefit is eliminating card fees for supplier payments, which matters most for high-value, high-frequency domestic transactions. For international supplier payments, open banking payment initiation terminates at the national payment rail boundary; what follows is a traditional correspondent banking wire. The "instant B2B payment" use case that is most cited in open banking discussions is real for domestic GBP and EUR transactions within SEPA. For cross-border B2B, it is a much shorter leg of a longer journey.

Accounts Payable and Receivable Automation

The fintech category delivering the most consistent commercial value for SMEs in 2026 is AP/AR automation: platforms that connect to accounting software, read invoice data, initiate payments on approval, and reconcile payments against invoices automatically. The category leaders — Modulr, Airwallex, and Nium for multi-currency B2B; TrueLayer and Token for open banking-initiated domestic payments; Codat and Railz for accounting data connectivity — address different parts of the stack but have converged on a similar product thesis: eliminate the manual work at the accounts payable and receivable layer, reduce payment errors, and give finance teams real-time visibility of cash positions.

The commercial case is straightforward to quantify. A finance team processing 500 supplier invoices per month manually takes approximately 3–4 hours of staff time per invoice across the full lifecycle — receipt, approval routing, payment initiation, reconciliation. At £30/hour, that is £45,000–£60,000 per month in staff cost for a function that automation platforms price at £2,000–£8,000 per month at that volume. The ROI is not ambiguous.

Embedded Finance for B2B Platforms

The fastest-growing segment of B2B fintech in the GCC is embedded financial services within vertical SaaS platforms. A property management platform that embeds rent collection and landlord payments. An ERP system that embeds supplier financing and early payment options. A logistics platform that embeds freight payment and insurance. In each case, the platform becomes a financial services distribution channel, and the incremental revenue per customer from the financial services layer frequently exceeds the SaaS subscription revenue.

For GCC businesses, the embedded finance opportunity is particularly significant because the commercial banking infrastructure for SMEs is less developed than in Western Europe. Access to working capital financing, cross-border payment capability, and multi-currency accounts — all of which a UK or EU SME can source from a high street bank — are meaningfully harder to access for a Qatari or Saudi SME. The fintech layer fills the gap.

What to Evaluate Before Buying

B2B payment technology buying decisions are frequently made on the basis of feature lists rather than integration quality and operational reliability. The questions that matter most in practice are:

  • What is the bank connectivity model? Direct API connections to the specific banks in your account structure, or an aggregator layer that introduces a dependency on a third party's bank relationships? The failure modes are different and the SLA implications are significant.
  • How does reconciliation work when payments fail or return? The nominal payment journey is straightforward. The exception handling — returned payments, failed authorisations, partial payments — is where the operational quality of a platform reveals itself.
  • What are the AML and sanctions screening obligations on you as the customer? Using a fintech payment platform does not transfer your AML obligations. Understanding where the platform's screening ends and your responsibility begins is a compliance question, not a product question.
  • What is the geographic scope? A platform that works well for GBP and EUR may have limited functionality for AED, SAR, or QAR transactions. GCC businesses need to verify domestic currency support before domestic B2B use cases are viable.

The technology is genuinely useful. The implementation quality and the fit to specific treasury and AP/AR workflows vary significantly between platforms. Due diligence at the vendor selection stage saves a painful and expensive migration six months after going live.