I have signed up for the KVK Mutation Service / KVK Data Service / KVK API. Does that mean that I will receive notification of all the changed SBI codes at once?

At present, the Chamber of Commerce is scheduled to implement the changes in the Dutch Commercial Register in the first half of September 2025. The Chamber of Commerce will notify you about these changes well in advance.

Given that the SBI codes of an estimated 2.9 million Chamber of Commerce registrations are set to change, involving an estimated total of 4.2 million mutations, it is currently hard to say how you will be notified about these changes. Using customer surveys, this process will be fine-tuned as much as possible.