Entry into the REGON register is obligatory for all:
- legal persons,
- organisational entities without legal personality,
- natural persons running economic activities (including private farms),
- local units of entities mentioned above.
The register contains following information on the above-mentioned entities:
- name and address of head office, and in case of natural persons running economic activities - additionally names, last name, and place of residence and personal identification number (PESEL) if available,
- Tax Identification Number (NIP) and information on its invalidity or revocation,
- identification numbers of partners in a civil partnership, if available, first and last names or company of partners in a civil partnership with a personal identification number (PESEL) of a natural person running economic activity, if available,
- legal form and form of ownership,
- activity performed, including the principal kind of activity,
- the date of foundation, starting, suspending and resuming the activity, the entry in the register or records, the bankruptcy statement, the completion of bankruptcy proceedings, the termination of activity or permanent termination of activity in the case of natural persons entered in the Central Register and Information on Business Activity, removal from the register, and the entry or removal from the business register of entities,
- name of registering or recording agency, name of register (record) and ID number issued by this agency,
- expected number of persons employed,
- in the case of private farms, overall area and the area of agricultural land,
- local units of entities quoted in the above-mentioned range, except for information on the Tax Identification Number (NIP), the legal form, and the form of ownership,
- telephone and fax number of the entity’s seat, e-mail address, and website, if they are available and submitted by the entity for entering in the register.
Each entity receives a unique ID number - REGON.
Identification number of an entity of national economy consists of 9 digits assigned to a legal person, an organisational entity without legal personality or a natural person running economic activity. The first eight digits of the number make an ordinal, whereas the ninth digit is a check code.
Identification number of a local unit consists of 14 digits, where first nine are the ID number of a legal person, an organisational entity without legal personality or a natural person running economic activities that created a local unit. Next four digits make an ordinal assigned to this local unit, and the fourteenth is a check code for the entire number of a local unit.
ID number is used in official registers and information systems of public administration. Bodies maintaining such registers and systems are obliged to enter the ID number and use it when transmitting information.