Simon Poh is currently Associate Professor (Practice) at the Accounting Department of the National University of Singapore (NUS) Business School where he teaches taxation and advanced taxation courses. Previously, he was Associate Professor (Adjunct) from 1 January 2007 to 30 J­une 2014. He recently won the NUS Business School Teaching Excellence Award from 2020 to 2025.

Outside the academia, Simon has been a distinguished tax professional both in Singapore and the region, with more than three decades of experience in tax compliance and tax advisory work in the areas of corporate tax, individual income tax and GST. This includes 9 years of experience with the Inland Revenue Authority of Singapore (IRAS), 3 years with reputable regional multinational corporations and more than 16 years with top international accounting firms, including serving as Tax Director/Head of Tax in two top international accounting firms.  His extensive experience includes GST tax advisory and risk management, international tax planning, transfer pricing, corporate restructuring, business acquisitions and mergers, tax due diligence reviews, expatriate tax planning, and advising clients on the tax implications of both inbound and outbound investments.  Simon continues to be active in professional tax-related work outside his teaching responsibilities.

Simon graduated with a Bachelor of Accountancy Degree in 1985 followed by a Master of Business Administration (MBA) degree from NUS in 1993.  He is a Fellow Chartered Accountant of the Institute of Singapore Chartered Accountants (ISCA) since 2004, a Full Member and Accredited Director of the Singapore Institute of Directors since 2008/2024 respectively, an Accredited Tax Advisor (Income Tax and GST) of the Singapore Institute of Accredited Tax Professionals (SIATP) since 2010 and an Honorary Member of the Financial Planning Association of Singapore since 2011.

Simon served as a Board Member of SIATP from January 2013 to March 2020.  SIATP was renamed Singapore Chartered Tax Professionals Limited (SCTP) from April 2020. At SIATP/SCTP, he served as Chairman of the SME Tax Committee from January 2012 to December 2022.  In January 2023, he stepped down from the SME Tax Committee to join the Tax and Levies Committee within SCTP.   Since 2021, he was appointed as Member of the Income Tax Board of Review to hear appeals against income tax assessments made by the Comptroller of Income Tax.  He currently serves as an Independent Director in a non-profit organisation since March 2023 and also chairs its Audit and Risk Committee since May 2024.  In 2025, he was appointed Chairman of the Curriculum and Examination Development Committee of the Tax Academy at IRAS and also Member of the Academic Expert Panel of Singapore Tax Academy Research Institute set up to collaborate on the advancement and sharing or tax research. Simon is the author of "Taxation in Singapore" which was first published in 2008.  The latest edition of this eBook was published in July 2026. 

Besides speaking at numerous external tax seminars and conducting regular tax workshops for professional bodies like ISCA and ACCA, Simon is a regular contributor to local and foreign media and professional accounting journals on current taxation issues.