Report Highlights

Understanding Open Banking Systems: A Buyer's Overview

Open banking systems deliver the technical and regulatory infrastructure that allows financial institutions to expose account data and payment initiation capabilities to authorised third parties through standardised APIs. Primary buyers include retail banks, credit unions, neobanks, and payment service providers that must comply with mandates such as PSD2 in Europe, the UK Open Banking Standard, and the emerging Section 1033 framework in the United States. Ancillary buyers include insurance companies, wealth management platforms, and corporate treasury functions seeking real-time data aggregation to power financial products and services.

From a procurement perspective, the market is structured around three primary vendor categories: pure-play open banking platform providers, established financial technology middleware vendors, and embedded open banking modules offered by core banking system incumbents. A credible shortlist for any mid-sized bank typically includes six to ten vendors. Contract lengths range from three to five years for platform licensing agreements, with API call volume pricing being the dominant commercial model. Competitive tender processes are standard for regulated institutions, though smaller fintechs often procure via direct negotiation. Total contract values at Tier 1 institutions regularly exceed USD 10 million over the contract term.

Factors Driving Open Banking Systems Procurement

The most immediate procurement trigger is regulatory compliance. The Consumer Financial Protection Bureau's finalised Section 1033 rule requires US depository institutions to provide machine-readable consumer financial data by 2026, creating a non-negotiable technology deadline for thousands of banks that currently lack compliant API infrastructure. In Europe, the European Commission's Financial Data Access regulation extends open banking obligations to investment accounts, insurance policies, and pension data, forcing institutions that have already deployed PSD2 infrastructure to upgrade to more comprehensive platforms capable of handling broader data categories and consent frameworks.

Beyond regulatory pressure, two operational forces are accelerating spend. First, embedded finance partnerships — where non-bank brands offer financial products through bank infrastructure — require banks to productise their data and payment rails, which demands robust, commercially governed API management platforms rather than internal compliance-only implementations. Second, real-time payment network expansion, including the Federal Reserve's FedNow rollout in the US and the UK's New Payments Architecture migration, is forcing banks to modernise underlying systems in ways that create natural co-investment opportunities with open banking platform upgrades. These operational imperatives compound the regulatory baseline, making deferral increasingly expensive.

Challenges Buyers Face in Open Banking Systems

Supplier concentration risk is a genuine concern in this market. A small number of vendors — most notably Plaid in the US and Tink in Europe — hold disproportionate market share in data aggregation, and switching costs once integrated are high due to proprietary data normalisation schemas and bank partnership agreements that are vendor-specific. Buyers who select a dominant platform without negotiating data portability provisions and interoperability clauses into contracts frequently discover they cannot migrate without rewriting downstream applications. This vendor lock-in risk is systematically underestimated during initial procurement evaluations.

Total cost of ownership surprises are a second structural problem. API call volume pricing models, which appear attractive at low usage levels, scale non-linearly as customer adoption grows. A retail bank that pilots open banking with 50,000 customers and then rolls out to 2 million active users can face a fivefold increase in platform costs that was not modelled in the original business case. Additionally, compliance maintenance costs — including ongoing audit support, regulatory reporting modules, and consent management updates triggered by regulatory amendments — are routinely excluded from vendor pricing sheets and add 25–40% to the stated contract value within 24 months of deployment.

Emerging Opportunities Worth Watching in Open Banking Systems

Open finance — the extension of open banking principles to non-bank financial data — represents the most consequential procurement opportunity over the next two to three years. Platforms that today manage bank account APIs will be required by new EU and UK regulation to integrate investment account data, mortgage data, and pension information. Vendors such as Finastra and Moneyhub are already investing in open finance-ready architectures, and buyers who select platforms now based solely on current bank account connectivity will face costly upgrades or full replacement within three years as open finance mandates activate.

A second opportunity is the emergence of commercial open banking — applying account-to-account payment initiation and data sharing to B2B treasury, accounts payable, and supply chain finance contexts. This segment has received significantly less vendor attention than consumer-facing open banking and consequently has fewer established incumbents, creating an environment where buyers have more negotiating leverage and suppliers are more willing to customise commercial terms. Fintechs including Token.io and Volt are actively building commercial payment initiation products, and buyers in corporate banking or treasury technology who engage these vendors before the segment matures will secure better pricing and influence product roadmaps.

How to Evaluate Open Banking Systems Suppliers

Three evaluation criteria are specific to the risks and value drivers of this market and must anchor any supplier assessment. First, regulatory certification scope: verify that the vendor holds active certifications under every jurisdiction in which you operate — FCA registration in the UK, PSD2 authorisation in EU member states, and CFPB readiness in the US — and confirm they maintain these certifications without passing compliance costs back to buyers as contract amendments. Second, API performance SLAs under peak load: open banking platforms that perform well in sandboxes but degrade during high-volume payment initiation windows create direct customer experience failures; require production performance data from reference customers, not synthetic benchmarks. Third, consent management auditability: regulators across all major jurisdictions now require granular, time-stamped records of customer data consent; evaluate whether the vendor's consent ledger is independently auditable and exportable.

The most common evaluation mistake buyers make in this market is over-indexing on the breadth of the bank connection library — the number of financial institutions a data aggregation vendor claims to connect to — without verifying connection quality, uptime by institution, and the method of connection. Vendors that rely on screen-scraping rather than certified API connections for a significant portion of their bank coverage create both regulatory exposure and data quality problems that emerge only after deployment. A capable supplier will disclose the percentage of connections that are API-based versus credential-based, publish institution-level uptime statistics, and provide contractual remedies tied to connection degradation. A supplier that declines to provide these disclosures in a tender process is signalling a coverage problem they are unwilling to expose to scrutiny.

Market at a Glance

Regional Demand: Where Open Banking Systems Buyers Are

Europe holds the most mature buyer base, shaped by over five years of mandatory PSD2 implementation and a well-established Open Banking Implementation Entity framework in the UK. Buyers in this region have already completed initial deployments and are now in second-generation procurement cycles, seeking to upgrade from compliance-minimum implementations to commercially differentiated platforms. This creates a distinctly different procurement brief from initial adopters: European buyers prioritise platform extensibility, open finance readiness, and commercial API monetisation features over basic regulatory compliance. The UK alone hosts more than 7 million active open banking users, giving buyers substantial leverage in negotiating volume-based pricing with established vendors.

North America is the fastest-growing demand region, driven by the CFPB Section 1033 rule and the rapid expansion of embedded finance partnerships among US neobanks and regional banks. Asia Pacific is bifurcated: Australia's Consumer Data Right regime has generated mature procurement activity among the major four banks and a growing challenger bank ecosystem, while markets including India, Singapore, and Hong Kong are advancing their own open API frameworks at different regulatory velocities, requiring vendors to demonstrate jurisdiction-specific compliance across a highly fragmented regulatory environment. Latin America, led by Brazil's Open Finance framework — the most comprehensive in the world by data scope — represents an underserved but rapidly professionalising buyer base where local vendor capacity is insufficient to meet demand, opening opportunities for global platform vendors with localisation capabilities.

Leading Market Participants

• Plaid
• Tink (Visa)
• Finastra
• MuleSoft (Salesforce)
• Token.io
• Yapily
• TrueLayer
• Moneyhub
• Volt
• Mambu

What Comes Next for Open Banking Systems

Over the next three to five years, three structural shifts will define procurement priorities. Regulatory scope expansion — from banking data to full open finance — will make platform interoperability the primary selection criterion, displacing current bank connection counts. Supplier consolidation is accelerating: Visa's acquisition of Tink and Mastercard's acquisition of Aiia signal that payment network operators view open banking infrastructure as strategic, and further acquisition activity will reduce the number of independent platform vendors available for competitive procurement. This consolidation will shift negotiating power toward larger vendors and increase the importance of contractual protections around pricing stability, feature roadmap commitments, and exit rights.

The practical implication for buyers is that procurement decisions made in 2025 and 2026 will define technology dependencies for a full decade. Buyers should immediately audit existing and planned vendor relationships for open finance extensibility and include contractual provisions requiring vendors to maintain regulatory certification in all relevant jurisdictions at no additional cost as mandates expand. Institutions without internal open banking expertise should invest in building a dedicated vendor management function before their next contract renewal cycle, because the commercial complexity of API volume pricing, compliance cost pass-through, and connection quality management requires specialist skills that general procurement teams do not currently possess.