In exceptional circumstances and with the agreement of the Board the officers may be re-elected for one additional term. The Board may fill vacancies occurring in its membership during the interval period between General Assembly meetings. The Board may also elect Associate Board Members for liason with scientific Unions and other organisations concerned with the purpose of article 1 and 2 above. Such liason elections should be done in consultation with the organisation concerned. The payment of annual dues is the responsibility of the Members.
Dues are payable on the first day of each year.
Certain specific projects may be financed independently of the general resources of the Commission. The unitary subscription for the ICA shall be decided by the General Assembly. In addition to the annual dues the ICA shall also get contributions from the fees from the International Congresses in Acoustics. The contribution from the congresses is calculated as a percentage of the registration fees paid by the participants. The percentage is set in the by-laws for the work of the Commission.