A breach of customs formalities does not automatically trigger import VAT, and even a customs debt that has already been incurred may subsequently be extinguished. In its judgment of 21 October 2026 (T-383/25), the General Court clarifies the relevance of the actual use of non-Union goods. The decision reaches far beyond the specific case of a sailing boat and is particularly relevant for businesses temporarily bringing goods into the EU for maintenance, repair or processing.