Who Are CST?

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


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Established in 1992 CST Tax Advisors has expanded internationally opening in Singapore in 2004. CST Tax Advisors now has offices in key centres including London, Singapore, Hong Kong, Los Angeles and New York. As the only firm of tax specialists and Chartered Accountants focused on Expatland we are able to provide unique insights to our clients.

CST Tax Advisors Singapore currently provides tax and accounting services to expatriates living and working in Singapore from all over the globe including Australia, the UK,Europe, the United States and other parts of Asia.


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. Singapore proved to be a very popular destination for Australian expatriates and entrepreneurs given the close relationship between Australia and Singapore.

As a result CST Tax Advisors Singapore was established in 2004 and has become the leading international tax firm servicing private clients in Singapore. Our strong relationships with leading private banks, law and immigrations firms and trust companies enable us to ensure clients are also well advised in other areas. CST Tax Advisors now has offices in London, Sydney, Hong Kong, Singapore, Los Angeles, New York, Atlanta and Tel Aviv.

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.