Card Scheme Fee Economics Under Pressure: The PSR and FCA Intervention in 2026

The economics of card payments in Europe are undergoing their most significant regulatory challenge in a decade. The UK Payment Systems Regulator's intervention into card scheme fees is not a consultation exercise or a soft review. It is a live, multi-stage regulatory process with a High Court judgment already on record, a formal Regulatory Findings Report direction issued in May 2026, and the FCA now formally involved alongside the PSR. For payments leaders operating across the UK, Europe, and the GCC, this development reshapes pricing assumptions, contract structures, and competitive positioning simultaneously.

What the PSR Found and Why It Matters

The Payment Systems Regulator (PSR) published its final report on card scheme fees charged by Visa and Mastercard in January 2026, following a market review that began in 2023. The High Court judgment of January 2026 confirmed the PSR's legal authority to direct both schemes to provide detailed fee and revenue data, rejecting Visa and Mastercard's judicial review challenge. That ruling was consequential: it established that the PSR has enforceable powers over scheme fee structures, not merely a consultative role.

The PSR's core finding is that cross-border interchange fees, scheme fees, and processing fees charged to UK acquirers and merchants have risen substantially since the UK's departure from the EU, with no clear corresponding improvement in service quality or cost to justify the increases. Between 2017 and 2023, the total fees paid by UK merchants to Visa and Mastercard increased by over 30% in real terms, according to PSR analysis. The regulator identified specific fee categories including scheme and processing fees (SPFs) as the primary driver of this increase, distinct from interchange which is separately regulated under the Interchange Fee Regulation (IFR).

The May 2026 Direction and the FCA's Role

On 9 May 2026, the PSR issued a formal Regulatory Findings Report (RFR) Direction to both Visa and Mastercard. This direction requires each scheme to publish a comprehensive breakdown of their UK fee structures, revenue by fee category, and cost justifications. The deadline for compliance falls within Q3 2026. Non-compliance carries significant enforcement risk, including financial penalties and the possibility of further intervention to set maximum fees directly.

The FCA's formal involvement reflects a deliberate policy decision by both regulators to treat card scheme fee economics as a consumer harm issue as well as a competition issue. Under the Financial Services and Markets Act 2023, the FCA acquired concurrent powers in certain payment systems matters. The joint PSR-FCA workstream established in early 2026 is examining whether excess scheme fees constitute an indirect consumer harm that justifies regulatory action beyond the payments sector perimeter. This cross-regulatory coordination is structurally significant and signals that the intervention will not resolve through negotiation alone.

Interchange, Cross-Border Fees, and the IFR Gap

A central tension in the PSR's analysis is the boundary between interchange fees, which are capped under the IFR at 0.2% for consumer debit and 0.3% for consumer credit within the UK domestic market, and scheme and processing fees, which are currently uncapped. Since the UK's departure from the EU's regulatory framework, cross-border interchange fees on transactions between UK cardholders and EEA merchants rose from their previous IFR-capped levels to 1.15% for consumer debit and 1.5% for consumer credit. Visa and Mastercard implemented these increases in October 2021. The PSR has examined whether these cross-border fee increases, combined with uncapped scheme fees, produce a total merchant cost of acceptance that is economically unjustified.

For large UK merchants with significant EEA transaction volumes, the cumulative impact is material. Retailers processing more than £500 million annually in cross-border card transactions face aggregate fee increases running into tens of millions of pounds per year. The PSR's market review found that these costs are partially passed through to consumers, creating the consumer harm rationale that justifies FCA co-involvement.

GCC and MENA Context: A Different Fee Architecture, But Similar Pressures

The PSR intervention is a UK regulatory event, but its commercial and strategic implications reach directly into the GCC and wider MENA region. Several dynamics make this relevant for payments leaders operating in or advising those markets.

First, Visa and Mastercard dominate card acceptance infrastructure across the GCC, with the notable exception of Saudi Arabia where mada, the domestic debit scheme operated by Saudi Payments, processes the majority of domestic debit transactions. In the UAE, Bahrain, Kuwait, Qatar, and Oman, international scheme fees are a significant component of the total cost of acceptance for merchants, and they are largely unregulated at a scheme level. The Central Bank of the UAE (CBUAE) and the Saudi Central Bank (SAMA) have focused regulatory attention on interchange disclosure and merchant discount rates, but neither has yet initiated a formal scheme fee market review of the type the PSR has conducted.

Second, GCC-based financial institutions with UK operating subsidiaries or UK merchant acquiring portfolios are directly exposed to any fee remedies the PSR ultimately imposes. A fee cap or structural unbundling requirement in the UK would affect the revenue models of acquiring banks operating across both jurisdictions.

Third, the PSR's methodology, specifically its use of a formal market review followed by a binding direction requiring cost justification data, is a regulatory template that GCC central banks and the Arab Monetary Fund (AMF) are monitoring closely. The AMF's work on regional payment system interoperability through the Buna platform already reflects a view that scheme fee structures should not create structural barriers to cross-border payment efficiency. If the PSR's intervention produces a durable fee reduction in the UK, it will strengthen the case made by merchant associations in Saudi Arabia, the UAE, and Egypt for equivalent domestic reviews.

What Payments Firms Should Do Now

The window for proactive positioning is open but will narrow as the RFR Direction compliance deadline approaches and the PSR moves into its remedies phase, expected in Q4 2026 or Q1 2027.

CFOs and heads of payments at merchants, acquirers, and payment service providers should conduct a full cost-of-acceptance audit, disaggregating scheme and processing fees from interchange in every market where they operate. For UK operations specifically, this audit should establish a baseline against which any PSR-mandated fee reductions can be measured and contracted for in acquirer agreements.

Compliance directors and legal teams at firms with both UK and GCC operations should review their card scheme contracts for most-favoured-nation clauses and fee review mechanisms. A PSR-imposed fee reduction in the UK does not automatically flow through to GCC contracts, and proactive renegotiation may be required.

PE investors holding acquiring assets or merchant payments platforms in the UK and MENA should adjust revenue modelling assumptions to account for two scenarios: a direct fee cap on scheme and processing fees, or a structural transparency requirement that enables merchants to negotiate bilaterally. Either outcome reduces the sustainable fee yield that acquiring businesses can extract from the existing scheme infrastructure.

Finally, all stakeholders should monitor the PSR's Q3 2026 publication of Visa and Mastercard's RFR compliance submissions. Those documents, when published, will provide the most granular public data on scheme fee economics ever released in the UK. They will inform regulatory discussions in Brussels, Riyadh, and Abu Dhabi for years to come.