Born in
Kolkata on 27 January 1941, Singh did his schooling at
St. Xavier's High School, Patna and completed his Senior Cambridge Examination at
St. Xavier's College, Patna before he joined
St Stephens College, Delhi for pursuing graduation. He did Masters in Economics from the
Delhi School of Economics. Following that, he has held the following positions: • Member, State Secretariat, Finance Department (1968–69) • Under Secretary, Ministry of Commerce (1969–73) • Special Assistant to Commerce Minister (1973–77) • Represented India at GATT, UNACTD, UN and the Common Wealth Secretariat. • Chairman, Bihar State Electricity Board • Special Assistant to the former President
Pranab Mukherjee, then former Minister of Commerce, Steel and Mines (1980–81) • First Minister, Economic and Commercial, Indian Embassy, Japan (1981–85) • Additional Finance Commissioner, Principal Secretary Industries and Industrial Development Commissioner, Bihar (1986–90) • Joint Secretary Police (Ministry of Home Affairs) (1990–91) • Joint Secretary, Department of Economic Affairs (Ministry of Finance) (1991–93) • First Chairman UNGEF (United Nations Global Environment Facility) (1993–94) • Secretary, Department of Economic Affairs (1993–95) • Secretary, Department of Expenditure (1995–96) • Revenue Secretary (1996–98) • Secretary to former PM
AB Vajpayee (1998-2001) • Member Planning Commission (2001–06) • Deputy Chairman, Bihar State Planning Board (2006–08) • Member of Parliament to the Rajya Sabha (2008–14) • President of
Institute of Economic Growth (IEG) Society (since 2021) ==Tax Reforms==