Welcome to Extratax Training


Find out about tax & VAT training courses for your business or accountancy practice.


Information on how the CIOT’s ADIT qualification can benefit you.


Book your online ADIT training package for the June 2021 exams.

Who are Extratax Training?

A specialist tax training provider, based in Northern Ireland, empowering global business. We offer you:

Tax, VAT & customs training to improve applied knowledge throughout your organisation – from increasing your team’s confidence in day-to-day operations to assisting the Board of Directors in developing tax strategy – helping your business to grow

Advanced Diploma in International Tax (ADIT) training courses for tax professionals around the world – delivered online by international tax experts to maximise your exam and career success.

“I have benefitted from a number of Catriona’s training courses over the past couple of years – both transfer pricing and non-transfer pricing related.  The courses were relevant and delivered in a knowledgeable and engaging way.  In particular I liked the mix of theory and exercises.  It was clear that Catriona has gained significant experience through her varied roles in tax which showed in her engaging and practical use of examples and anecdotes which kept the courses interesting and relatable.”  

E Kelly, Tax Director

As a “just personal tax background person”, Catriona helped me to understand Corporation Tax from the very basics in a clear manner. I experienced a high level of professionalism and efficiency and benefitted from her impeccable knowledge in this area. She simplified my work and definitely made tax clearer! 

Eva - ADIT UK module student

Areas of expertise

ADIT – comprehensive online training packages for the Principles of International Tax, UK and Transfer Pricing modules.

VAT – practical training to improve the accuracy of VAT returns and avoid costly errors

Corporate tax – training for finance and tax professionals to enhance understanding of UK corporate tax matters, including tax accounting and related disclosures

International tax – transfer pricing and other international tax training for both tax professionals and expanding businesses.

ADIT Exam Support

Information about online ADIT training to support your learning


Answers to Frequently Asked Questions about ADIT

Latest News

Keep up to tax with relevant news for tax and non-tax professionals

About Extratax Training

I’m Catriona Loughran, an ADIT graduate, and I’m passionate about international tax & its role in powering business growth.

Tax is an inescapable part of business, from start-ups to the largest multinationals, yet many entrepreneurs and decision-makers don’t fully appreciate its effect on their global business operations. It’s more important than ever that the impact of tax is understood throughout an organisation and that businesses can rely on highly trained tax advisers to guide them.

I founded Extratax Training with the mission to increase understanding of international tax issues through delivering training programmes with a key outcome – TAX MADE CLEAR.

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