LAWYER PROFILE
Ken Loon Ong

Ken Loon Ong

Asia-Pacific 2026

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Drew & Napier LLC
 Drew & Napier LLC

Ranked in 1 practice area

Tax

Singapore

14 years ranked

Contributions and articles

1 Global Practice Guides

About

Provided by Drew & Napier LLC

Asia-Pacific

Practice Areas

Ken Loon advises on tax aspects of corporate transactions, such as income tax, GST, stamp duty, and property tax.

She assists clients with negotiations with the IRAS and represents clients before the tax tribunals and Singapore courts.

Her clients come from across business sectors. She advises local and multinational corporate groups, financial institutions, and investment funds on a broad range of transactions, including mergers and acquisitions, corporate structures and restructurings.

In addition, Ken Loon works with private clients to provide solutions to complex tax, succession and private wealth management issues.

She is recommended as one of Singapore’s leading tax lawyers by Chambers & Partners, The Asia Pacific Legal 500, International Tax Review: World Tax, asialaw and Practical Law Company Which Lawyer?.

Career

LLB (Hons), National University of Singapore (2001); MSc Taxation, University of Oxford; Admitted to Singapore Bar (2002).

Before joining Drew & Napier in 2008, she was a Principal Legal Officer in the Law Division of the Inland Revenue Authority of Singapore.

Professional Memberships

• Member, Law Society of Singapore

• Member, Singapore Academy of Law

• Member, Criminal Law Advisory Committee (Hearing)

• Member, International Fiscal Association, Singapore Branch

• Member, Singapore International Chamber of Commerce, Tax Interest Policy Group

• Accredited Tax Advisor (Income Tax) in Singapore Chartered Tax Professionals Limited

Experience

Ken Loon has worked on a number of tax litigation cases that have led to landmark case law, including:

• AQQ v Comptroller of Income [2014] 2 SLR 847 in which she appealed against the decision of the Income Tax Board of Review and the High Court.

• Lai Ling Wan (alias Lai Lily) v Commissioner of Stamp Duties [2011] 4 SLR 845 in which she successfully represented the appellant in the High Court in overturning the position taken by the Commissioner of Stamp Duties in his administrative circular on multiple property purchases.

• Comptroller of Income Tax v MT [2006] 3 SLR(R) 688 in which she successfully represented a ship owner before the Income Tax Board of Review and the High Court in tax exemption on the bareboat charter fees of a Singapore-registered ship.

• First DCS Pte Ltd v. Chief Assessor and Comptroller of Property Tax [2007] 3 SLR 326; Chief Assessor and Another v First DCS Pte Ltd [2008] 2 SLR 724 in which she represented the Chief Assessor before the High Court and Court of Appeal in the assessment of pipelines running through land owned by third parties.

Chambers Review

Provided by Chambers

Chambers Asia & Pacific

Tax - Singapore

Band 1
Individual Editorial

Ong Ken Loon heads the firm's tax practice and has extensive experience representing clients in tax litigation disputes. She regularly handles matters involving the Inland Revenue Authority of Singapore.

Learn more about this teamView ranking table

Strengths

Provided by Chambers

  • Ken Loon Ong has a wealth of experience and knowledge.

    TaxChambers Asia & Pacific

  • She is unparalleled in every aspect and our go-to tax person.

    TaxChambers Asia & Pacific

Ranked Individuals at Drew & Napier LLC (43)

India

Singapore

All Contributions (1)

Provided by Drew & Napier LLC

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