How fun to see you here! This is the documentation of the API's to Visma eAccounting and Visma Lön Smart. Here you should find all information you need in order to succesfully create third party apps towards the Visma eAccounting and Visma Lön Smart API.

How do I Access the API's?

In order to make authorized requests towards the API's, you need to be registered as a partner. Just go to our registration site and sign up yourself! You will be provided with all necessary credentials via the email you provide upon registration.

For more detailed information regarding authentication and authorization, take a look at the Authentication guide.


If you have a more complex question or a customer specific question we prefer that you communicate to us via email.

Swedish partners: [email protected]
Norwegian partners: [email protected]
Dutch partners: [email protected]


Don't forget the Error ID!

If you encounter a error of some kind, we always return a unique Error ID on all non-successful requests. Provide that Error ID to the API support to decrease response time!

Terms Of Service

Our developer Terms Of Service can be read here