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Information to the interested party on data protection

5.1. Census

Description of the activity

Management and obtaining of information on taxpayers, whether they are natural or legal persons. To do this, most of the census data is processed, including its history.


Effective application of the state and customs tax system


  • Taxpayers and obligated
  • Natural or legal persons, Spanish or foreign with DNI, NIE (DGP) or NIF (AEAT)


  • DNI and data associated with the document, NIE, NIF, company name, Name and Surname, Address, Telephone, Email, fax, mobile phone, marital status and, where applicable, spouse or ex-spouse, country of birth, province of birth, population of birth, date of birth, nationality, passport, sex, type of administration to which the taxpayer is affiliated, tax identification number in foreign tax administration, town hall identification number, electoral identification number, registration sheet number, name of the father , Mother's name.
  • Transactions of goods and services.
  • Tax obligations.


  • Collection
  • Record
  • Storage
  • Structuring
  • Modification
  • Update
  • Copy
  • Analysis
  • Enquiry
  • Extraction
  • Promotion
  • Interconnection
  • Limitation
  • Suppression
  • Destruction
  • Other


  • SS Organizations
  • CCAA bodies
  • Autonomous Communities
  • Administrative Bodies Premises
  • Provincial Councils
  • Navarra Provincial Council
  • Basque Provincial Councils
  • Chamber of Commerce
  • DG Cadastre
  • Courts
  • European Commission

International transfers

are not foreseen

Planned deadlines for deletion

The data collected will not be deleted and will remain in the databases of the State Tax Administration Agency (AEAT) in order to cover possible legal requirements or other types of claims that may arise.


Based on the actions entrusted to the AEAT for the exercise of its functions, the data of the activities may be processed for data analysis and mining.

Technical/organizational measures

All data processed has been evaluated through a risk analysis, having obtained a list of technical and organizational measures to apply.

These measures have been applied in accordance with the approved adaptation plan.

More information

File that contains the registry of taxpayers, whether they are natural or legal persons. The file also contains the historical data with the changes that have occurred in the census data of each taxpayer. The main identifying data is the Tax Identification Number (NIF). The file is used by the different functional areas of the Tax Agency to recover the identification and census data that they need for their operation, since the majority of census data that is common to several applications resides in this file.