Definitive Period Entry for AES Export Declarations Set for December 14, 2025

• The definitive period for AES export declarations begins at 23:59:59 on 14/12/2025 (UTC).
• There will be a system unavailability for declaration registration from 23:59:59 on 14/12/2025 to 01:00:00 on 15/12/2025 (CET).
• All export declarations from December 15, 2025, must use the final period format.
• Operators must ensure their systems are configured and tested for the new validation rules by 14/12/2025.
• A seminar for operators will be held in the last week of October to address questions.

Source: sede.agenciatributaria.gob.es

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.

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