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UK, US, Irish and International Tax Expertise
ADIT Courses and Bespoke Tax Training
Learn from experienced tax professionals — whether you're studying for the ADIT qualification or building your team's capability in corporate tax, international tax and transfer pricing.
100% ADIT pass rates in 5 of 7 modules across the 2025 exam sittings
Trusted by Big 4, FTSE 100 and Fortune 500
Supporting tax professionals in 40+ countries
About ExtraTax Training
ExtraTax Training is a specialist tax training provider based in Belfast, delivering online ADIT international tax courses to students worldwide and bespoke tax training to accountancy firms, law firms, in-house tax teams and multinationals across the UK, Ireland and Europe.
Our tutors bring decades of experience from professional practice, industry and tax authorities, including HMRC, covering corporate tax, international tax, transfer pricing, VAT and employment taxes. Clients include Grant Thornton, Big 4 firms, FTSE 100 and Fortune 500 multinationals, and tax authorities.
Our tutors bring decades of experience from professional practice, industry and tax authorities, including HMRC, covering corporate tax, international tax, transfer pricing, VAT and employment taxes. Clients include Grant Thornton, Big 4 firms, FTSE 100 and Fortune 500 multinationals, and tax authorities.
Studying for ADIT?
Online courses for seven ADIT modules. Live small-group classes, weekly assignments with individual feedback, revision days and mock exams, designed for busy professionals. Outstanding pass rates, sitting after sitting.
Principles of International Taxation · Transfer Pricing · UK Tax · US Tax · Irish Tax · EU VAT · Banking
Principles of International Taxation · Transfer Pricing · UK Tax · US Tax · Irish Tax · EU VAT · Banking
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Developing your team?
Bespoke training designed around your firm, your clients and your people — no off-the-shelf syllabus. From graduate programmes to specialist technical training, delivered by tutors with practice, industry and tax authority experience.
Corporate Tax · International Tax · Transfer Pricing · Graduate Programmes · CTA Exam Support
Corporate Tax · International Tax · Transfer Pricing · Graduate Programmes · CTA Exam Support
Testimonials
What clients and students say
Jonathan Megaw, International Tax Director, Grant Thornton
Tax Partner, Top 40 firm, United Kingdom
Online ADIT International Tax Courses
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ADIT Principles of International Taxation
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ADIT Transfer Pricing
(Module 3.03)
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ADIT United Kingdom Tax
(Module 2.09)
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ADIT
EU VAT
(Module 3.02)
Book your December 2026 ADIT course now with our early bird offer!
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ADIT Ireland Taxation
(Module 2.06)
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ADIT United States Tax
(Module 2.10)
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ADIT
Banking
(Module 3.05)
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ADIT UK Tax Study Manual
(Online + Print)
Why ExtraTax Training
Real-world expertise
Tutors who have advised clients in practice, led in-house tax teams and worked inside tax authorities. Training built on first-hand experience, not just the legislation.
Designed around you
ADIT classes scheduled for busy professionals; bespoke programmes built around your firm's needs. Small groups, interactive sessions, individual feedback.
Outstanding results
100% pass rates in five of seven ADIT modules in 2025 — and client partnerships, from Big 4 teams to Top 25 UK firms, that deepen year on year.
Meet our Team
Catriona Loughran
Founder and Managing Director
Linda Mercel
Director of Tax Training and Learning
Alyson Sutcliffe
Tax Training Manager
Kristen Gillanders
Client Relations Manager
Naina Shah
Business Development Manager