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New “MyCustoms Refund” Module Launched for AC4 Cancellations Since March 9, 2026

  • The new “MyCustoms Refund” module has been live since 09/03 for processing refunds after AC4 cancellations in the new AC4 application.
  • This procedure does not apply to AC4 cancellations in PLDA; the existing process remains unchanged for those.
  • The new application communicates via MyMinfin for submitting supporting documents, handling additional questions, and viewing decisions.
  • Users will be informed when amendments and cancellations in IDMS also use the refund module.
  • Users are advised to consider these changes for future applications and follow-ups.

Source: financien.belgium.be

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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