Shortly after earning his Master of International Tax in 2005 Ruston Tambunan founded CITASCO, a tax consulting firm based in Jakarta, where he serves as Managing Director and advises clients in foreign investment.
Born in Balige, Ruston has returned to Indonesia where he is married and has two daughters.
Prior to founding CITASCO, he worked at PT Truba Jurong Engineering, a leading construction company in Indonesia, as Vice President of Finance, Accounting and Tax.
Ruston has served for six years as an auditor in the Indonesian government’s Financial and Development Supervisory Body.
Ruston is a part-time lecturer at the University of Indonesia and Prasetiya Mulya Business School where he teaches tax management and international tax subjects. He has authored many articles on taxation published at national newspapers and tax magazines.