The Congress is the supreme body of the Socialist International. It proclaims its principles, determines its Statutes and, on the recommendation of the SI Council, decides upon the admission of new members and organisations. The Congress meets every four years.
The Council of the Socialist International is the gathering of all member parties, fraternal and associated organisations. The Council makes decisions of policy and principle between Congresses, and establishes committees, commissions and working groups. The Council meets twice a year.
The regional Committees define and inform the work of the SI and generate input from their national and regional perspectives to the common global policies of the organisation. Thematic SI Committees deepen, broaden and promote particular areas of global policy.
The Socialist International establishes Commissions to address significant global issues, bringing together political leaders and noted experts to formulate an in-depth progressive response, and to put forward recommendations to tackle critical international challenges.