Banks in Guernsey
There are 71 banks and financial institutions tracked in Guernsey, covering retail banks, neobanks, and BaaS sponsors that participate in open banking. Each profile shows API readiness signals (developer portal, sandbox, aggregator coverage) so teams can shortlist integration partners in Guernsey. Browse the alphabetical list below or jump to a specific letter, then open a provider profile for the developer docs, OAuth scopes, and contact details.
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Banks in Guernsey: FAQ
Our directory lists 71 banks and financial institutions in Guernsey. You can browse the full alphabetical list above; the stat cards show how many publish a developer portal, offer a sandbox, or are reachable through an API aggregator.
We don't yet have confirmed developer-portal data for banks in Guernsey. Many can still be reached through an API aggregator like Plaid, Tink, TrueLayer, MX, or Salt Edge — see the aggregator coverage stat above.
Guernsey is outside the EU PSD2 zone, but many banks still expose open banking APIs voluntarily or under local rules (e.g. UK Open Banking, US CFPB Section 1033, Australia's CDR, Brazil's Open Finance, India's Account Aggregator framework). Open each provider profile to see the standards it supports.
We don't yet have confirmed aggregator coverage data for banks in Guernsey. The major players to check directly are Plaid, Tink, TrueLayer, MX, Salt Edge, Yodlee, and Yapily — see our /api-aggregators directory for regional coverage.