The Directorate-General for Taxation and Customs Union (DG TAXUD) is a Directorate-General of the European Commission. The DG Taxation and Customs manages, defends and develops the customs union as a vital part of protecting the external borders of the European Union. It also co-ordinates taxation policy across the European Union.

The Directorate-General is presently organised into five directorates:^[1]

• Directorate A: Customs
• Directorate B: Digital Delivery of Customs and Taxation Policies
• Directorate C: Indirect Taxation and Tax Administration
• Directorate D: Direct taxation, Tax Coordination, Economic Analysis and Evaluation
• Directorate E: International and General Affairs

The department is headed by Director-General Mr Gerassimos Thomas, a Greek national. Since January 2022, Mr Thomas is supported by a Principal Adviser for Strategy and Economic Analysis Coordination.

Previously, the Directorate-General was organised into the following five directorates:^[2]

• Directorate A: Customs Policy, Legislation, Tariff
• Directorate B: Security & Safety, Trade Facilitation & International coordination
• Directorate C: Indirect Taxation and Tax Administration
• Directorate D: Direct taxation, Tax Coordination, Economic Analysis and Evaluation
• Directorate E: Resources and International Affairs

• European Commissioner for Economy
• Customs union
• Taxation
• Single European Act
• General Agreement on Tariffs and Trade (GATT)