Mr Jason Tan Jia Xin > Lee Hishammuddin Allen & Gledhill > Kuala Lumpur, Malaysia > Lawyer Profile
Lee Hishammuddin Allen & Gledhill Offices
LEVEL 6, MENARA 1 DUTAMAS, SOLARIS DUTAMAS
NO. 1, JALAN DUTAMAS 1
50480 KUALA LUMPUR
Malaysia
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Mr Jason Tan Jia Xin
Work Department
Tax, SST & Customs
Position
Partner
Career
Jason’s primary area of practice is income tax and customs litigation, trade remedy investigations, tax and customs investigations and trade facilitation.
He has been involved in many of the largest income tax and customs disputes before all levels of Court on major points of tax law. The disputes involve issues on transfer pricing, withholding tax, income recognition, capital allowance, reinvestment allowance, double taxation agreements, deductibility of expenditure, excise valuation and customs procedures.
Jason also represents a sizeable number of manufacturers in local and foreign trade remedy investigations such as anti-dumping, safeguard duties, countervailing duties and anti-circumvention investigations.
He is also particularly active on issues relating to excise duty valuation, import and export controls, customs compliance, international trade regulations, customs valuation, sales and services tax and customs penalties.
Jason is a regular speaker on the tax scene on issues relating to income tax and customs. Jason was recently recognised as a “Leading Partner” by the Tax practice in The Legal 500 Asia-Pacific 2025, and was acknowledged as a “Future Star” in the Benchmark Litigation Asia Pacific 2024 rankings, and honoured with the recognition of “Top 40 Under 40” for Tax by Benchmark Litigation Asia-Pacific Awards 2024. Jason is also recently ranked as a “Band 4” practitioner in the tax practice by the Chambers Asia-Pacific 2025 rankings, as well as a “Notable Practitioner” by asialaw 2024. Jason has also been acknowledged as a “Highly Regarded Practitioner” for Indirect Tax and Tax Controversy by ITR World Tax 2025 Rankings.
Jason has contributed to the Malaysian chapter of the Tax Disputes and Litigation Review (11th Edition, 2023), and to the Malaysian Chapter of the Lexology Getting the Deal Through – Tax Controversy 2024, as well published “Spotlight on Malaysian Tax Disputes”, in collaboration with Sweet & Maxwell (2024).
Languages
English, Malay, Mandarin
Education
- LLB (Hons), Cardiff University
- Called to the Bar of England and Wales (Lincoln’s Inn)
- Advocate & Solicitor of the High Court of Malaya
Lawyer Rankings
Malaysia > Tax
(Leading partners)With a ‘notable track record in handling landmark cases’, the team at Lee Hishammuddin Allen & Gledhill is well known for its advocacy in tax disputes. The practice is led by Nitin Nadkarni, who handles income tax and customs litigation, and Jason Tan Jia Xin, who has ‘profound expertise’ in anti-dumping and safeguarding duties. Offering a full-service tax practice encompassing income tax disputes and advisory services, indirect tax and international trade, the team lauded for its ‘deep expertise and thorough understanding of both local and international tax regulations’. Ivy Ling Yieng Ping continues to be well regarded in the field of indirect tax, particularly sales and service tax.