Post graduated from University Majoring Business Administration/Accounting adn Law Master of Science in International Taxation and attended several management course in Japan. Has gained wide experiences as Auditor and Tax Consultant in Public Accounting firm since 1974. Member of the Indonesian Tax Consultants Association since 1981.
Has gained substantial practical experiences in auditing various business organization in a worldwide auditing firm to prior to establish firm at Sidharta & Harsono/ KPMG and SGV/ Arthur Anderson and in house Tax Training as instructor/lecturer and participating in tax seminars as speaker. He is officially registered Tax Consultant which having permit license and also having Tax Lawyer Permit License from Tax Court.