Consistent success

Founded in 2014, Ong Sim Ho LLC is a tax law practice based in Singapore and headed by Ong Sim Ho, who is consistently top-rated in the tax arena by leading professional publications and praised for his unique and multi-disciplinary approach to tax issues. The OSH team is well-experienced in all areas of tax. Our substantive practice-focus is in tax dispute resolution and litigation, tax investigation, tax advisory, and private wealth matters. With a proven track record for serving our clients creatively and strategically, our clients appreciate our All rounded analysis, All resources applied, All team involvement, and Always caring approach to our cases.

What they say...

"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

*We use Taxes Under Management (TUM) as an objective measure of our pole position in the tax dispute and litigation market. It denotes the total tax assessed and under objection currently advised and managed by the firm, excluding transaction values and trust assets.

What's New?

Got a tax matter?

Or are you looking to grow yourself?