 After leaving military service Durrani started on a banking career.After some years in England, Durrani returned home to be appointed Deputy Managing Director of Pakistan Industrial Credit and Investment Corporation (PICIC) in 1962.In February 1966 the Pakistani government established the Investment Corporation of Pakistan (ICP), a government-owned mutual fund with the objective of enlarging the investor base and developing the capital markets in Pakistan, and Durrani was appointed its first managing director.