Join Open Banking

At Belfius we strongly believe in the power of open banking, but we also believe that security is key to banking activities. Feel free to use our API, but be aware that we do no support – and even ban- reverse engineering.

What this portal offers you

An experience created for developers

Belfius provides you with detailed technical documentation, complete with clear instructions for testing your creations, code examples and much more.

Optimised test environments

Carry out your tests in total security in our sandbox, receive error notifications, information about the availability of the API, analyses, etc.

Collaboration and partnerships

Because the banking solutions of tomorrow depend on collaborations and partnerships yet to be put in place, Belfius wishes to play an active role in this process.

The highest performing security standards

At Belfius, security is – and has always been – at the heart of our priorities.


Account Information Services (AIS) Sandboxed

Use our Account Information Services (AIS) API to access account balances and transaction histories through third-party applications.

View API

Payment Initiation Service (PIS) Sandboxed

Use our Payment Initiation Service API to initiate payments via third-party applications.

View API

Consent API Sandboxed

Use our Consent API in order to receive the required authorization code, a mandatory input in all our AIS APIs.

View API

How does it work?


Choose an API in our marketplace


Check out our documentation and start thinking about interesting integrations.

Get started

Request your access and carry out your tests in the test environment (Sandbox).