B Com, CA, CTA, M Tax, ATA, TEP

Matthew is the principal of CST Tax Advisors in Sydney. As a Chartered Accountant and international tax specialist, he brings more than two decades of experience to bear when advising clients who are investing or moving across borders. He holds a Master of Taxation, is a Chartered Tax Advisor and a Registered Tax Agent.

When it comes to providing tax advice, Matthew believes it is about more than the simple tax consequences. It is about gaining a deep understanding of the client’s situation to formulate clear, robust tax and business advice that deals with both current and potential tax concerns.

Professional Background

With over 20 years of experience providing international tax advice to a wide range of clients, Matthew is well adept at helping clients manage and plan for the tax outcomes and opportunities, both domestically and abroad.

With extensive qualifications in international taxation and personal experience living as an expat, Matthew is a leader in his field with specialist expertise in relation to trusts, controlled foreign companies, international taxation and advising Australian businesses expanding overseas.

CST Tax Advisors Principal 

Matthew is the principal of CST Tax Advisors in Sydney. He was previously the Managing Director of CST’s Singapore office, where he lived and managed CST’s advisory businesses across multiple countries.

Having been an expatriate, Matthew experienced first-hand the challenges of moving internationally and setting up businesses overseas. He also acts as a specialist, providing tailored advice to assist other accounting firms to manage their clients’ international tax matters.


Matthew’s qualifications include a Master of Taxation from the Australian School of Taxation (ATAX) at the University of New South Wales. Matthew was awarded the Allens Arthur Robinson prize for the best performance by a graduating student.

His other qualifications include a Bachelor in Commerce from Macquarie University, where Matthew graduated with an award of meritorious academic excellence.

In Australia, he is a Chartered Tax Advisor, a Chartered Accountant, a Registered Tax Agent and a Member of the Sydney chapter of the Society of Trust and Estate Practitioners. In addition, Matthew is a Singapore Chartered Accountant and a Singapore Accredited Tax Advisor.

Leader In International Tax

As a well-established expert in a broad range of Australian international tax areas, Matthew is extensively involved in helping Australians and Australian companies to expand overseas. In addition, Matthew has written for publications in the Taxation In Australia Journal (Sep 2020, Nov 2003), STEP Journal (Feb 2019), International Tax Report (Dec 2018), and The Tax Specialist Journal (Feb 2007).

Personal Background

Matthew is married and has two children. Matthew’s many interests outside of work includes music, art, history and sports – Matthew is a die-hard basketball fan.


Australian Expatriates: Casualties of Law
Taxation in Australia Journal
June 2023

Residency in a global pandemic: Advising the returning Australian
Taxation In Australia Journal
September 2020

The Road to Oz 
STEP Journal
February 2019

Asia Pacific: 2018 and beyond
International Tax Report
December 2018

United States Entity Considerations in the Trump Era
The Tax Specialist Journal
April 2018

International Tax: Spotlight on India
The Tax Specialist Journal
February 2007

The future taxation of trusts in Australia – a proposal
Taxation In Australia Journal
November 2003

Speaking Engagements

Webinar: Advising Returning Australians – Residency in a Global Pandemic
October 2020

Seminar: Doing Business in the USA Tech Sector
Melbourne – hosted by Global Victoria
November 2019

Seminar: Doing Business in the US
Melbourne – hosted by Global Victoria
5 December 2018

Seminar: US Market Entry
Brisbane – hosted by Trade & Investments Queensland
October 2018

Seminar: Expanding to the USA
Sydney – hosted by NSW Trade and Investment
February 2018

Seminar: Residence and Source – Tax Excellence Decoded: Grasping ambiguous taxation concepts when doing business in Singapore
Singapore – hosted by Singapore Institute of Accredited Tax Professionals (now Singapore Chartered Tax Professionals)
August 2015


When advising clients, I enjoy being able to analyse their situation, understand what motivates them and provide robust tax advice in a direct manner. Anticipating issues which may be beyond the horizon is always an important part of my approach.

Matthew Marcarian