While the establishment of a partnership (general and limited partnerships) does not require adherence to the proper form, a written agreement should be made for the trade register.

For legal purposes, limited liability companies and cooperatives are only established when they have been entered in the trade register maintained by the National Board of Patents and Registration.

The basic declaration to the trade register is made using the start-up notification form, with which the enterprise may also apply for registration in the tax administration registers.