The attributes often associated with Slovenia’s insurance market are underpenetrated and underdeveloped even though the current number of insurance undertakings incorporated in Slovenia is 15 and many of them are composite insurance companies. There are two reinsurers and three pension companies. On addition, there are around 200 insurance undertakings head offices in other Member States that directly provide insurance services in the Republic of Slovenia under freedom to provide services. In addition, there are three insurers with branches in Slovenia under right of establishment of a branch in another Member State.

Other entities supervised by the Insurance Supervision Agency:

• Kapitalska družba pokojninskega in invalidskega zavarovanja d.d. (Pension Fund Management) generally referred to as KAD
• Pool za zavarovanje in pozavarovanje jedrskih nevarnosti GIZ (Nuclear Insurance And Reinsurance Pool)
• Slovensko zavarovalno združenje, GIZ (Slovenian Insurance Association)  

Insurance Supervision Agency supervises insurance undertakings, insurance agencies and insurance brokerage companies, and insurance agents and brokers. In addition, the Agency supervises legal persons related to an insurance undertaking, if necessary for the purpose of supervising the insurance undertaking's operation, as well as additional control of the insurance undertaking within an insurance group, insurance holding company and joint-venture insurance holding company. Since 2000, the Agency issues authorisations not only to insurance undertakings but also to pension companies and supervises their operations.  

The activities carried out by the Agency can be classified in five areas:

• granting authorisations, approvals, opinions, decisions and orders to insurance undertakings, insurance agency or brokerage companies, insurance agents or brokers, banks for insurance brokerage, to the Slovene Insurance Association, insurance undertakings in an insurance group, pension companies;
• monitoring, collecting and verifying reports and notifications by insurance undertakings and other entities which are liable to submit reports to the Agency or notify it of individual facts and circumstances in compliance with the provisions of the Insurance Act or other acts;
• conducting examinations of operations of insurance undertakings and pension companies;
• imposing measures of supervision in compliance with the Insurance Act;- preparation and issue of the implementing regulations pursuant to the Insurance Act.