Top notch tax legal advice

Our team is best known for handling complex and novel legal tax issues, particularly in the tax dispute area.

Our ability to adopt a multi-disciplinary and innovative approach to solving tax matters has allowed us to achieve consistent success for our clients. At OSH, we are committed to delivering top-notch tax legal advice and solutions by building on the strength of every lawyer and having a dedicated focus on areas of law in which we excel. We believe that being All here for you is the foundation of our success.

Our Expertise

From multinational conglomerates to HNWIs, our clients trust our expert advice for their business.

Proud Moments

By consistently delivering effective solutions that work for our clients, we are proud to be ranked by the following leading publications.

- TESTIMONIALS -

"The most important thing is his technical understanding and how creative he is. No one in Singapore can cut through the issues like him. He is very, very strong."

CHAMBERS ASIA PACIFIC 2019

"The firm is a standout name for tax litigation and has a solid presence in transactional advisory, investigations, audit, and trust and private client work."

ASIA PACIFIC LEGAL 500 2019

“Ong Sim Ho has demonstrated very good knowledge and in-depth understanding of the Singapore income tax regulations and has provided very concise and comprehensive analysis of our tax issue.”

INTERNATIONAL TAX REVIEW 2019

“Sim Ho is a brilliant tax lawyer with a very clear mind. He is able to break down complex issues into simpler analyses and provide a fresh perspective.”

CHAMBERS ASIA PACIFIC 2018

Ong Sim Ho "earns high praise from clients, who describe him as "very approachable and willing to share his knowledge," and an "expert in Singapore tax law."

CHAMBERS ASIA PACIFIC 2017

Ong Sim Ho was described as "a tax lynchpin" at the Singapore tax bar.

ASIA PACIFIC LEGAL 500 2009/2010

"He's most definitely highly experienced and very highly respected."

CHAMBERS ASIA PACIFIC 2016

"Ong Sim Ho is one of the leading global tax lawyers."

TAX DIRECTOR’S HANDBOOK 2015

"coming up with very constructive ideas" "his wealth of knowledge on precedents allows him to give an immediate response to any kind of question"

CHAMBERS ASIA PACIFIC 2013

Sim Ho is a Tier 1 lawyer known for his "marvellous legal mind" and "ability to holistically look out for client interests".

CHAMBERS ASIA PACIFIC 2012

Sim Ho was recommended for his “critical thinking” and “analytical skills”

TAX DIRECTOR’S HANDBOOK 2014

"truly superior knowledge"

ASIA PACIFIC LEGAL 500 2011/2012

"renowned for being very strong in the area of [tax] litigation and value-added tax”

INTERNATIONAL TAX REVIEW 2006, 2007

Asia Pacific Legal 500

Recommended Lawyer: Ong Sim Ho (2019, 2018, 2017, 2016, 2015, 2014)

Recommended Lawyer: Yang Shi Yong (2019, 2018, 2017, 2016)

Tax: Local Firm (2019, 2018, 2017, 2016)

Asialaw Leading Lawyers

Sole Leading Lawyer for Taxation (Singapore): Ong Sim Ho (2018)

Asialaw Profiles

Recommended law firm for Taxation (2019)
Notable law firm for Taxation (2018)

Chambers Asia Pacific

Band 1 Leading Individual: Ong Sim Ho (2019, 2018, 2017)

International Tax Review

Tax Controversy Leaders Guide: Ong Sim Ho (2017)

Asian-MENA (Middle East & North Africa) Counsel

In-House Community Firm of the Year (Singapore), Sole winner in the Taxation Category (2017)