In 2000, the IAEA adopted the Results Based Approach for the development of its programme. Results based programming and budgeting involves formulating a programme and budget that is driven by a number of desired results that are articulated at the outset of the process, and against which actual performance is measured at the end of the programme and budget cycle. In a results based approach, programme formulation follows a sequence of steps intended to ensure that the programme is designed to meet the needs of Member States and makes the best use of the Agency's potential.
The Agency's main sources of funding are the Regular Budget Fund, the Technical Cooperation Fund and Extrabudgetary Programme Funds. These are mainly supplied by Member States and, in some cases, by other donors. Contributions to the extrabudgetary funds and the Technical Cooperation Fund are voluntary.