The Olympic Host Contract for up-coming Games (previously named the Host City Contract) determines the responsibilities of the National Olympic Committee (NOC), the Organising Committee of the Olympic Games (OCOG) and the host, concerning the organisation, financing and staging of the Olympic Games as well as the contribution of the IOC to the success of the Olympic Games (Olympic Charter, Chapter 5 Rules 36).
By signing the Olympic Host Contract following the election of the host, the IOC enters into an agreement with the host National Olympic Committee (NOC), the host and the OCOG (which signs at a later date), and requires that they abide by the provisions of the Olympic Charter and the IOC Code of Ethics.