A sole proprietorship (IK) is a natural person entered in the Commercial Register.

A natural person has an obligation to register as a sole proprietorship in the Commercial Register if they meet any of the following criteria:

• the annual turnover from their economic activity exceeds EUR 284,600;
• their economic activity corresponds to that of a commercial agent (Section 45 of the Commercial Law) or a broker;
• their annual turnover from economic activity exceeds EUR 28,500 and, at the same time, they employ more than five employees in conducting their economic activity.

A natural person may also apply for registration in the Commercial Register as a sole proprietorship even if they do not meet the above criteria.