On October 14, 2025, a major change in customs is coming in customs: the H1 System will replace the old SAD (Single Administrative Document) for imports in Spain and throughout the European Union. Why? Because the goal is to make everything more digital, faster, and safer.   What is the customs H1 System? It’s a new 100% online format that organises information in a clearer and more modern way, leaving behind the old SAD boxes.   What changes in customs with H1? ✔️ Full digitalisation: less paperwork,