Siew Moon Sim
Globalization and digitalization bring risks and controversy to businesses. A detailed approach to managing tax controversy helps companies navigate complexities and resolve matters efficiently.

Siew Moon Sim

EY Asia-Pacific Tax Policy and Controversy Services Leader

Actively participates in internal and external activities to promote tax as a career. Builds strong and resilient families as a council member of Families for Life. Happily married. Mother of five.

Siew Moon is EY Asia-Pacific Tax Policy and Controversy Services Leader and a tax partner with Ernst & Young Solutions LLP working across all tax services. Along with the global tax controversy team, she helps clients to prevent, manage and resolve their tax controversies. She works with the global tax policy team to help develop and implement policy initiatives — both as an external and internal advisor to governments and companies.

Siew Moon has served many clients that include multinationals and local firms. She also advises various government authorities and regulators on tax matters.

Siew Moon provides tax compliance and advisory services. Apart from advising her clients on structuring, cross-border and M&A transactions, she also assists them in negotiating and applying for tax incentives, as well as applying for advanced tax rulings and tax clarifications.

Siew Moon holds a bachelor’s degree in Accountancy with First Class Honors from the National University of Singapore.

How Siew Moon is building a better working world

“As the corporate landscape becomes more complex amid globalization and digitalization, the global tax environment looks to bring even more uncertainty — and perhaps challenges — to businesses. Together with EY tax policy and controversy professionals and others across the tax functions, using extensive EY experience in working with governments and companies, I help EY clients to prevent, manage and resolve tax controversies.”

Contact Siew Moon