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.

Virtual Accounts and Multi-Entity Treasury Management

For businesses with multiple legal entities, subsidiaries, or project-based cost centres, virtual account structures are one of the most practically useful capabilities offered by the current generation of B2B fintech platforms. A virtual account is a payment identifier — an IBAN or account number — that routes transactions to a master account held by the business, with automated labelling and reconciliation based on the virtual account used. The business appears to its counterparties to have multiple accounts; in the bank's ledger, all balances pool in a single master account.

The treasury benefit is straightforward: full visibility of cash across all entities in a single platform, with no requirement to manually aggregate balances from multiple bank accounts or deal with end-of-day sweeps. For businesses that previously managed multi-entity treasury through a combination of separate bank accounts, inter-company loans, and manual reconciliation, the migration to a virtual account structure can reduce treasury administration by a measurable margin while improving the accuracy of intra-day cash positions.

The implementation requirements are more involved than many platform vendors represent in their sales process. Virtual account structures work well for domestic payments in currencies where the underlying rail supports the relevant payment types. They are less uniform in performance for multi-currency structures: the virtual IBAN may be a UK IBAN routing to a GBP master, which means EUR or USD payments sent to that virtual IBAN will either be declined by the sending bank or converted before receipt. Building a genuinely multi-currency virtual account structure — where each currency has its own pool and the business controls conversion timing — requires either a single platform with native multi-currency pooling or a structure that links multiple platform accounts. Few platforms execute this without material constraints on currency coverage or conversion spreads.

Embedded Finance and the B2B Credit Access Gap

One of the most significant structural gaps in B2B financial services for SMEs is access to short-term working capital at the point in the business workflow where the need arises. Traditional trade finance — letters of credit, invoice discounting, supply chain finance — requires bank relationships, credit assessments, and turnaround times that do not fit the timeline of most SME supplier payment decisions. The fintech response to this gap is embedded B2B lending: credit offers presented within the AP/AR workflow, underwritten using the transaction data that the platform already holds, and disbursed in the same workflow as the payment instruction.

Platforms that have integrated embedded credit into their AP/AR workflow — Pipe, Capchase, and several embedded banking infrastructure providers — use the business's transaction history, account inflows, and accounts receivable ageing data to generate a dynamic credit limit. The underwriting is automated, the offer is presented to the finance team at the point of payment approval, and the credit can be drawn and repaid without a separate bank application process. For a business waiting 60 days for a receivable to be paid while managing 30-day supplier payment terms, embedded short-term credit that bridges the gap is commercially useful in a way that a traditional overdraft facility is not.

The regulatory classification of these products varies by jurisdiction. In the UK and EU, embedded B2B credit facilities are regulated lending products if offered to businesses that are not classified as exempt under the relevant consumer credit or financial services legislation. Platform providers need to hold the appropriate permissions; businesses receiving the credit need to understand the cost of capital accurately, not only the headline rate but the effective annual rate adjusted for the credit term and any platform fees. The short-term nature of embedded B2B credit can make headline rates appear reasonable while effective annual rates are materially higher than alternative financing sources.

Selecting a B2B Fintech Platform: Criteria That Matter

The market for B2B fintech platforms has expanded to the point where the selection decision is genuinely difficult. There are now more than a dozen credible platforms covering AP automation, AR management, multi-currency accounts, and embedded credit, with significant overlap in claimed functionality and meaningful variation in actual delivery. The selection criteria that produce reliable outcomes focus on three dimensions that marketing materials rarely address clearly.

The first is the depth of accounting system integration. A platform that exports payment data to your ERP as a daily CSV file is materially less useful than one that writes payment confirmations directly to the accounts payable ledger in real time with the correct chart of accounts mapping. The difference between these two integration depths is often the difference between the platform genuinely reducing finance team workload and the platform creating a new data management task that did not exist before. Ask for a technical integration specification before signing.

The second is exception handling. In any AP workflow, a proportion of invoices will not match automatically — amounts differ from POs, VAT is calculated differently, supplier bank details have changed. How the platform surfaces exceptions to the finance team, what the approval workflow looks like, and whether exceptions can be resolved within the platform or require switching to a separate system determines whether the platform works for the 5% of invoices that require human attention, not just the 95% that process automatically.

The third is regulatory permissions and balance sheet structure. Understanding whether the platform holds client funds under an e-money licence or a payment institution licence, whether client funds are segregated and protected under the relevant national regime, and what happens to balances in a platform insolvency scenario is a basic due diligence question that surprisingly many businesses do not ask before onboarding. For businesses holding significant working capital balances on a platform, the answer determines whether the funds are protected.