Many nations have contributed to the establishment of the university, most prominently the United States, but also Portugal, South Africa, Norway, Spain and Italy in the form of private business assistance and non-governmental agencies. UCAN receives all of its government funds because of decree 20/82 in 1982 that required petroleum companies operating in Angola to invest into educational and training programs the amount of $0.15 (15¢ of U.S. dollar) per barrel of oil produced. These are commonly known as "Training Levy Funds."