Can there be a refund of transaction tax or excise duties on goods subsequently exported from Gibraltar under the 2026 UK/EU Treaty?

Short answer

Yes. For goods exported to the EU, the transaction tax and excise duties are refunded once the exporter proves that VAT and excise duties have been paid in the EU. For goods exported to non-EU countries (like the UK), the refund occurs when the EU designated customs post confirms that all export formalities have been completed.