Open Banking API Aggregators Powering Europe’s Financial Infrastructure
Europe’s open banking ecosystem has matured significantly since PSD2 came into force in 2018. API aggregators sit at the centre of this ecosystem, abstracting the complexity of connecting to thousands of individual bank APIs into a single integration point. For product teams building financial applications, selecting the right aggregator determines your time-to-market, geographic reach, and data quality.
Why Aggregators Exist
PSD2 mandated that banks expose APIs for account information and payment initiation. However, the directive left implementation details to individual banks and national regulators. The result: fragmented standards across Europe. Some banks follow the Berlin Group’s NextGenPSD2 specification, others use STET (France) or the UK’s Open Banking Standard, and many offer only minimal compliance.
Aggregators solve this by maintaining individual integrations with hundreds or thousands of banks, normalising the data into a single API. Instead of building and maintaining 3,000+ bank connectors, a fintech integrates once.
Key Players and Their Positioning
- Tink (Visa)
- Acquired by Visa for €1.8B in 2022. Connects to 6,000+ institutions across 19 European markets. Strong in both AIS and PIS, with particular depth in the Nordics and DACH region.
- TrueLayer
- London-based, 100% API-based (no screen scraping). Covers 14+ European countries with 95–99% account coverage in major markets including UK, Spain, and the Netherlands.
- Yapily
- Positions itself as Europe’s largest open banking network with 2,000+ bank connections across 19 countries. Strong in UK and Germany with ~98% bank coverage.
- Token.io
- Specialises in payment initiation, now partnered with Mastercard. Covers 21 markets with access to 567M+ verified bank accounts. Licensed by FCA (UK) and BaFin (Germany).
- Nordigen (GoCardless)
- Acquired by GoCardless, notable for offering a free tier for account data access. Focused on European banks with direct PSD2 API connections.
- Enable Banking
- Finnish provider covering 2,500+ ASPSPs across 29 European countries. Emphasises direct API connectivity without intermediaries.
What to Evaluate
| Criterion | Why It Matters |
|---|---|
| Bank coverage by target market | Total bank count is misleading — what matters is coverage percentage in your target countries |
| AIS vs PIS support | Not all aggregators offer both; some specialise in data, others in payments |
| API standard handling | How well does the aggregator normalise data across Berlin Group, STET, and UK OB? |
| Consent management | PSD2 requires 90-day re-consent; aggregators handle this differently |
| Regulatory licensing | Verify AISP/PISP authorisation in each target jurisdiction |
Regulatory Landscape: PSD2 to PSD3 and FIDA
The European Commission’s proposed Financial Data Access (FIDA) regulation will extend open banking beyond payments to mortgages, pensions, investments, and insurance—expected to take effect around 2026–2027. Meanwhile, PSD3 aims to address gaps in PSD2, including stronger authentication requirements and improved API performance standards for banks. Aggregators that are already investing in these extended data categories will have a significant head start.