| 5/6 September | Informal General Affairs and External Relations Council - Riva del Garda |
| 4 October 2003 | General Affairs Council Rome |
| 14 October | General Affairs Council Luxembourg |
| 17/18 October | European Council in Brussels: the composition of the Commission, qualified majority, Foreign Minister and defence will be on the agenda. |
| 26/27 October | General Affairs Council, Brussels. The agenda will include "non-institutional matters", which means public policies (and public health) |
| 18 November | General Affairs Council, Brussels. The agenda will include qualified majority, Foreign Minister, ratification procedures |
| 28/29 November | Conclave on the IGC Rome: the preparation of the complete package for the European summit. |
| 9 December | General Affairs Council, Brussels: continuation of preparations for the package. |
| 10 December 2003 | The IGC is expected to have completed its work |
| 12/13 December | European Council, Brussels |
| December 2003, late April 2004 | Translation of the Treaty |
| Early May 2004 | The Treaty is signed together with the enlargement |
| June 2004 | Possibility of referenda in some EU Member States together with the European Parliament Elections |
