CTA: The International Standard

The Chartered Institute of Taxation has licensed the Irish Tax Institute, The Tax Institute of Australia and the Taxation Institute of Hong Kong to use the designations 'Chartered Tax Adviser’ and ‘CTA’.

A Chartered Tax Adviser, or CTA, holds the leading qualification in professional tax expertise and can be relied upon to provide the highest quality tax advice to business and personal clients.

The CTA designation is recognised and respected internationally as a mark of technical excellence and professional integrity.

A CTA has passed rigorous examinations demonstrating a high level of technical knowledge of the tax system. They are required to follow high ethical and professional standards, equivalent to the Professional Conduct in Relation to Taxation (PCRT) and Professional Rules and Practice Guidelines (PRPG) codes applying to CIOT members. They must also demonstrate that they are keeping their professional knowledge and skills up to date by undertaking Continuing Professional Development (CPD).

CTAs are supported in this, and monitored to ensure they fulfil their commitments, by their membership of a respected professional body. In the UK this is the Chartered Institute of Taxation. In the Republic of Ireland this is the Irish Tax Institute. In Australia this is The Tax Institute. In Hong Kong this is the Taxation Institute of Hong Kong. Each of the four bodies has its own disciplinary structure in place in the event of a client feeling their CTA has failed to meet these high professional standards. For the CIOT, this is the Taxation Disciplinary Board.

All four bodies share a commitment to increasing public understanding of tax matters and to engaging with legislators and tax authorities in pursuit of a tax system which works efficiently and effectively for all concerned - taxpayers, their advisers and the authorities.

CTAs are required by their code of practice to only practice in areas in which they have expertise, geographically and technically. For example, a CTA practising in the UK and advising on corporate taxes is required to have expert knowledge of the UK corporate tax system. A CTA practising in Ireland, Australia or Hong Kong and advising on corporate taxes is required to have expert knowledge of the corporate tax system in the relevant jurisdiction.

Whether you are an employer or a taxpayer seeking expert advice, you can be reassured that when you hire a CTA you will be taking on a tax professional who has proved themselves to be of the highest calibre.


If you are a professional body, believe that you fulfil the criteria set out here and are interested in applying for a CTA license, please get in touch to discuss this with us, including the likely fee for the assessment of your application.