To strengthen and regulate the industrial and commercial relations between member states by exploiting the expanded market i.e. Kenya by 1963 had a population of 13,339,000, Uganda in 1962 had 11,549,000 and Tanzania by 1961 had 15,155,000, Therefore the East African Development Bank was set up to promote industrial development and giving priority to less industrially developed states.

To accelerate harmonious balanced development and sustained expansion of economic activities the benefits whereof would be equitably shared between the partner states.

The treaty guaranteed freedom of flow of goods between member states without exchange charges, and the three currencies came close very close to a single currency however there was to be control of movement of capital and restrictions were imposed on the movement of labour between the partner states.

To promote unity, co-operation and good will among the people of East Africa this would be a step in attaining security in the region.

The desire to have common services, with the headquarters of the East African Common Service in Nairobi such services included Habours, post and Telecommunications, Airways and Railways among others.

Encourage East African interstate trade by removing internal duties (taxes) between the East African countries.

To encourage the development of industries in East Africa. This is by creating large markets.

To coordinate the basic social service in East Africa such as railways, harbours, scientific research and East African borders.

To attract foreign trade and investment due to the expanded markets.

To create political and economic harmony.

To institute a common tariff in international trade.

To create a common monetary unit for East Africa.

Immediately after the formation of the East African Community in 1967, the following organizations came into effect:

East African railway cooperation, which had its headquarters in Nairobi, was supposed to link the activities of the entire railway corporation in the region.

The East African harbours with its headquarters in Dar-es-salaam were responsible for the control and development of harbours within the region.

The East African airways organization with its headquarters at Nairobi. It was particularly responsible for coordinating airfreights development of airports, airfields and training of civil aviation workers.

East African posts and telecommunications with its headquarters at Kampala was in charge of all telecommunication operations and maintenance within.

The Customs excise department with its headquarters in Mombassa was responsible for handling matters that concern internal duties among the three nations.

The East African Development Bank with its headquarters in Kampala was supposed to offer short term and long-winded loans for development projects within East Africa.

There was the income tax department with its headquarters in Nairobi.

It was responsible for the collection of excise duties.

The medical research centre with its headquarters in Mwanza was responsible for all researches in the field of medicine. In addition, there was the Amani scientific institute also at Mwanza.

The Agriculture, veterinary and forestry research headquarters at Mugoga in Kenya was responsible for conducting research into better methods of production in agriculture, forestry and veterinary.

Fisheries research headquarters at Jinja was responsible for finding better fishing methods, establishing and developing fish farming with better commercial varieties.

Meteorological department headquarters at Nairobi for determining weather conditions.

The East African court of Appeal with its headquarters in Nairobi was responsible for cases that involved the three states. It also administered justice especially of individual appeals from the supreme courts of Uganda, Kenya, or Tanzania.

The East African Fisheries Marine headquarters was put in Zanzibar. By 1970, the cooperation was performing so well that it was the best economic cooperation within Africa. It was because of its good performance that led the West African states to form ECOWAS to perform similar functions in West Africa.