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Technical documentation that has changed in the import declaration and deadlines

Documentation that has changed . See the Document Versions section for details on new features.

  • Technical Import Guide CAU v3.10.
  • Rules and Conditions for Importing CAU v3.8 to be published
  • Additional Information Import CAU V3.12

Can be seen at:

HEADQUARTERS: Tax Agency: Technical guides - Presentation of the SAD (Single Administrative Document)

From Monday 7/04/2025 also in: Web Services (agenciatributaria.gob.es) .

  • Definitive closure of the current PreCau duo.

See news published on 04/June/2024 (H1 publication of technical documentation and calendar ). Here the day 10/14/2025 is detailed as the day of definitive and irreversible closure of the current PreCau day regarding the registration of new complete or simplified declarations.