Who are CST

We are the Hong Kong member firm of the CST International network. We deliver specialist tax advice and accounting services to private clients, family groups and international enterprises.


Established in Australia 1992 CST Tax Advisors has expanded internationally opening in Hong Kong in 2004. CST Tax Advisors now has offices in key expat centres in over 8 countries and 12 international cities including Hong Kong, London, Hong Kong, Los Angeles, New York and Atlanta.

As the only firm of tax specialists and Certified Public Accountants focused on Expatland we are able to provide unique insights to our clients. CST Tax Advisors Hong Kong currently provides Hong Kong tax and accounting services to expatriates living and working in Hong Kong from all over the world.

Our Mission Statement

CST Tax Advisors aims to provide expat individuals and international private enterprises in Expatland with integrated tax and accounting advice for their home country and the country in which they operate.


Our member firms are located in major international cities and we are therefore able to directly service our global clients in Expatland.

Our professional contacts mean that many cross-border business matters can easily be addressed. Our professional affiliations and professional relationships allow us to co-ordinate a solution to whatever professional tax or legal issue a client may have. This reduces many of the communication difficulties when an expatriate or business person is considering an international move.

To learn more about Expatland click here.

The History of CST

CST Tax Advisors was founded in 1992, by John Marcarian. From the early days of the Firm it was recognised that the private client tax market for Australian expatriates and international businesses was a specialist market segment. Hong Kong has always been a key international destination and our Hong Kong offices was established to provide specialist advice to Australian expatriates.

Today with our expanded US and UK capabilities we now provide advice and compliance services to clients from the United Kingdom, the United States of America and Europe in addition to continuing to service the Australian market. Our strong relationships with leading HK private banks, law and immigrations firms enable us to ensure clients are also well advised in other areas.

John Marcarian

As John says

As John says

The beginning of the CST way was grounded in delivering quality services to the executive, private client or family business. I always believed that the relationship with the client was the foundation stone of the Firm and our obligation to maintain that relationship meant that we were not to be just about the chargeable hour and answering questions – but rather is a sense of obligation to go the extra mile to think about things that we ourselves would want done – if we were the client.

Our Key Value Proposition is to continue to provide expat individuals and international enterprises in ‘Expatland’ with integrated tax accounting and structuring advice for both their home markets and the international markets in which they operate. We do this by having empathy to their facts and circumstances and focussing on executing tax and business solutions.

We strongly believe that by focussing on clients living and working in ‘Expatland’ we can deliver on the above statement through our global brand and our united delivery platform.