Any person who, in the course of their business, is involved in activities covered by the customs legislation (hereinafter: economic operator) has to be registered in the EORI system (Economic Operators Registration and Identification System). The EORI system is based on a unique identification number (EORI number) which allows the use of only one identification number for all customs operations across the entire EU.
Economic operators who are established in Slovenia and Slovenian natural persons do not need to lodge any requests to obtain EORI numbers. When this system was being introduced, Slovenia decided that the EORI number is the same as the applicable tax number with the prefix SI.
Operators from non-EU countries can be registered with the competent authority in any member state. In Slovenia, the authority is the Kranj Financial Office, Department of Customs, Department of TARIC.