Humanitarian aid necessarily implies an important component of official aid due to the need to intervene with appropriate resources in a very short time. At the same time it is a constant concern of INTERSOS to ensure that no governmental donor exerts any influence on the organization's strategic or operational choices. With this aim we have diversified our financial resources in order to prevent any donor becoming predominant in funding. Among official donors, we prioritize international bodies with a more neutral profile.

INTERSOS receives at least one third of its funding from its own member's contributions and donations from individual citizens, solidarity groups, associations, joint campaigns and private firms. The rest of its budget comes from official funding: the European Union (ECHO, DG External Relations, DG Development), Italian Ministry of Foreign Affairs (DG Development Cooperation), FAO, OCHA, UNDP, UNHCR, UNICEF, UNOPS, WFP, WHO, Conferenza Episcopale Italiana, Italian Caritas, Italian Regions, Provinces and Municipalities. Italian Trade Union Confederations have been constant INTERSOS supporters.
A leading firm of auditors certifies the economic budget, which amounted to more than € 20,000,000 for the year 2000.