General :

PROCEDURE	DESCRIPTION	ORGANISM
Registration in the Census of entrepreneurs, professionals and retainers	Census declaration of beginning, modification or cessation of activity that must be presented for tax purposes by individual entrepreneurs, professionals and companies.	Tax Agency (AEAT)
Tax on Economic Activities	It is a tribute derived from the exercise of business, professional or artistic activities.	Tax Agency (AEAT)
Registration in the special regime for self-employed workers (RETA)	Regime that regulates the Social Security contribution of the self-employed (individual entrepreneurs), community members and the partners and administrators of some companies	General Treasury of Social Security
Registration of partners and administrators in Social Security schemes	The registration in the Social Security system that corresponds in each case will be conditioned by the type of company and / or the participation in the share capital.	General Treasury of Social Security
Obtaining and legalizing the Visits book	It is not imposed on companies, acquire or fill any kind of book to record the actions of the Labor Inspectorate.	Provincial Labor Inspection
Legalization of the Book of Minutes, of the Register of Partners Book, of the Book-register of registered shares and of the Record Book of contracts between the sole shareholder and the company	The current legislation requires commercial companies to keep some registry books (of minutes, partners or shares) and to make their presentation annually in the Provincial Commercial Register.	Provincial Commercial Registry
Legalization of the Daily Book and the Inventory Book and Annual Accounts	All businessmen who keep their accounts according to the provisions of the Commercial Code must prepare the following accounting documents: a Daily Book and a Book of Inventories and Annual Accounts.	Provincial Commercial Registry
Obtaining an electronic certificate	The electronic certificate makes it possible to sign electronic documents and unequivocally identify the owner of the signature.	Certification authorities

According to the activity :

PROCEDURE	DESCRIPTION	ORGANISM
Activity license	Licenses for installations and works, activity licenses and operating licenses.	City Councils
Registration in other official bodies and / or registries	Depending on the activity carried out, the start of the activity must be communicated with a mandatory nature in those administrations, authorities and / or registries.	Other official bodies and / or registries

In case of hiring workers :

PROCEDURE	DESCRIPTION	ORGANISM
Registration of the company	The registration is the administrative act by which the General Treasury of the Social Security assigns to the employer a number for its identification and control of its obligations (code of contribution account).	General Treasury of Social Security
Affiliation of workers	Administrative act by which the General Treasury of Social Security recognizes natural persons their inclusion for the first time in the Social Security System	General Treasury of Social Security
Registration of workers in the Social Security Scheme	Every employer who hires workers must communicate the registration in the corresponding Social Security Regime.	General Treasury of Social Security
Registration of employment contracts	This procedure consists in carrying out the legalization or registration of work contracts for employed workers.	Public Service of State Employment
Communication of opening of the work center	If the Company is established or decided by the entrepreneur to initiate his activity, the opening communication of the work center should be carried out, for the purpose of controlling the Occupational Health and Safety conditions.	Ministry of Labor of the CCAA
Obtaining the labor calendar	Companies must show the work calendar in each work center, which must be in a visible place.	Provincial Labor Inspection

Complementary :

PROCEDURE	DESCRIPTION	ORGANISM
Registration of distinctive signs	Distinctive Signs are used in industry and commerce to distinguish the products or services of a company from other competitors in the market.	Spanish office of the patents and brand