This study attempts to measure and analyse the importance of deficit finance in the economic development of the Sudan during the period 1960–9, mainly covered by the Ten-Year Plan of Economic and Social Development, 1961/2 to 1970/1, not implemented beyond 1969. In the light of these findings I shall also review the implications for the success of the present Five-Year Plan, 1970/1 to 1974/5, but since I am basically concerned with the rôle of deficit finance, I shall not attempt to appraise the overall national economic policies and trends, although these significant variables obviously affect each other.