Rajiva Ranjan Singh with 48 years of experience in the area of tax administration, computerisation and research with Govt of India, World Bank, Asian Development Bank in India, Nepal, Africa and Central Asia. An expert in Taxpayer Identification Number and Tax Computerisation. Presently working as Senior Consultant, Indian Council for Research on International Economic Relations, India in the area of tax policy & administration and information and communication technology in the are of taxation.