Online ADIT Courses
CIOT Recognised Provider
Preparing for your ADIT exams? Our weekly online classes are designed to fit around your working life, with no study leave required. You attend a live class, then read and consolidate at your own pace before the next session, building your knowledge week by week.
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100%
Pass rates in 5 of 7 modules in 2025 sittings
40+
Countries in our student community
7
ADIT modules covered
Balancing ADIT with work and family life
One of our students came to us wanting to study the ADIT Principles of International Tax but wasn't sure she could fit it around her in-house tax role and a young child. Her employer recognised the value of ADIT for the team's ongoing projects and agreed to fund the course. Thanks to our weekly evening class structure, she didn't need to request a single day of study leave.
She started her studies knowing she could defer if life got too busy. She caught up on recordings during her commute. She worked through weekly assignments at her own pace. She attended live classes from home, with no travel and no childcare to arrange. She passed first time.
After the course, Kristen, our Client Relations Manager, caught up with her about her experience. It was exactly the kind of story that sums up what ExtraTax Training's courses are designed to make possible.
She started her studies knowing she could defer if life got too busy. She caught up on recordings during her commute. She worked through weekly assignments at her own pace. She attended live classes from home, with no travel and no childcare to arrange. She passed first time.
After the course, Kristen, our Client Relations Manager, caught up with her about her experience. It was exactly the kind of story that sums up what ExtraTax Training's courses are designed to make possible.
If you're wondering whether you can fit ADIT around your existing commitments, get in touch and we'll talk you through your options.
What to expect from your ADIT course
Live classes in small groups, with recordings
Your weekly tuition classes are live, online, and deliberately small. Small enough that you can ask questions, share experiences from your work, and get a real answer from your tutor. Classes are typically two hours, starting at 4pm UK time, a time we have found works well across multiple time zones. Principles of International Tax and UK Tax run for two and a half hours. All classes are recorded and available on your learning platform immediately afterwards, so missing a session never means missing the content.
Weekly structure that builds understanding
Each week of the 10 or 11 week tuition phase follows the same pattern: attend your live class, complete your reading and assignment, then come back the following week ready to go deeper. This rhythm is consistently what our students tell us makes the difference. You consolidate as you go, rather than trying to retain everything at once.
Weekend revision classes and mock exams
As your exam approaches, interactive weekend revision classes help you consolidate the syllabus and focus on exam technique. Mock exams with individual written feedback give you a clear picture of where you stand before the real thing.
UK and Ireland based tutors
All ExtraTax Training tutors are based in the UK or Ireland, with deep expertise in the modules they teach. Catriona Loughran FCA CTA ADIT CTC, the first person in Ireland to gain the ADIT qualification, founded ExtraTax Training in 2019. ExtraTax Training has offered ADIT courses since 2020.
Catriona teaches UK Tax, supported by Alyson Sutcliffe, and Transfer Pricing. Linda Mercel, Director of Tax Training and Learning, teaches Principles of International Tax. Associate tutors cover the remaining modules. All work closely with the ExtraTax Training team, so you get the same standard of course regardless of which module you choose.
Catriona teaches UK Tax, supported by Alyson Sutcliffe, and Transfer Pricing. Linda Mercel, Director of Tax Training and Learning, teaches Principles of International Tax. Associate tutors cover the remaining modules. All work closely with the ExtraTax Training team, so you get the same standard of course regardless of which module you choose.
Kristen, with you from first enquiry to results day
From the moment you get in touch, you'll be looked after by Kristen Gillanders, our Client Relations Manager. Kristen has supported ExtraTax Training students for almost five years. She knows the ADIT exam calendar inside out: registration deadlines, exam entry windows, mock submission dates. She'll remind you when each one is coming up, so you don't have to keep track yourself. If you haven't been online for a few weeks, she'll check in to see how you're getting on. Students get to know Kristen well over the course of their studies, and she gets to know them.
Study materials included
Study materials are included in all course packages, tailored to each module. Principles of International Tax and Transfer Pricing students receive an online subscription to the Bloomsbury International Tax Service, the primary study resource for those modules. UK Tax and Ireland Tax students receive an ExtraTax Training study manual, designed to be accessible to all levels of experience, including those newer to the subject. EU VAT, Banking, and US Tax courses use published texts appropriate to each module. All packages also include class recordings, weekly assignments, and access to an online forum where you can raise queries with your tutor and fellow students. Some packages include a hard copy of your core text delivered to you.
Flexible options to suit your situation
For Principles of International Tax, Transfer Pricing and UK Tax, courses are available in Core, Select and Extra packages, with differences in access period, additional tutor support, and peace of mind features such as a free return to the course if you need to resit. EU VAT, Ireland Tax, US Tax and Banking each have a single course option, equivalent to the Select package. Full details are on each module page.
ADIT Pass Rates 2025: ExtraTax Training
First-time pass rates from the June and December 2025 sittings.
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ADIT Banking for June 2025 = 100% (CIOT pass rate = 78%)
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ADIT EU VAT for December 2025 = 100% (CIOT pass rate = 63%)
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ADIT Ireland for June 2025 = 100% (CIOT pass rate = 100%)
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ADIT Principles of International Tax for June and December 2025 = 92% (CIOT pass rate = 53%)
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ADIT Transfer Pricing for June and December 2025 = 100% (CIOT pass rate = 65%)
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ADIT UK Tax for June and December 2025 = 71% (CIOT pass rate = 53%)
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ADIT US Tax for June 2025 = 100% (CIOT pass rate = 64%)
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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)
What our students say
I studied for three ADIT modules, taking UK Tax with ExtraTax Training and Principles of International Tax and Transfer Pricing with a larger, better-known provider. I preferred ExtraTax Training for several reasons.
Catriona and Alyson are very talented and knowledgeable teachers. ExtraTax Training provides one class per week, rather than cramming all the topics into several full-time days, enabling the classes to go into greater depth. ExtraTax Training's administration was far more efficient. Emails were answered promptly, rather than several days later.
Catriona and Alyson are very talented and knowledgeable teachers. ExtraTax Training provides one class per week, rather than cramming all the topics into several full-time days, enabling the classes to go into greater depth. ExtraTax Training's administration was far more efficient. Emails were answered promptly, rather than several days later.
TAX LAWYER, UNITED KINGDOM
ExtraTax Training is a 'premier league' ADIT online course provider and is highly recommended to all prospective ADIT students.
— Head of Investment Banking, South Africa
The instructor was fantastic and gave a lot of great, practical tips for the exam. ExtraTax genuinely cares and wants everyone to succeed.
— Transfer Pricing Manager, United States
From the first lecture with ExtraTax Training, I realised that the course would greatly enhance my international tax expertise.
— In-house Tax Manager, United Kingdom
Sponsoring your team through ADIT
Many ADIT candidates are supported by their employers, and ExtraTax Training works with tax teams at professional services firms, law firms and in-house tax functions to arrange group enrolments and invoiced payment.
If you are a tax team leader or learning and development manager considering ADIT for your team, we are happy to talk you through module options, study timelines, and how ADIT fits into a wider development programme. Employer bookings can be arranged by invoice, with VAT zero-rated for non-UK business customers.
If you are a tax team leader or learning and development manager considering ADIT for your team, we are happy to talk you through module options, study timelines, and how ADIT fits into a wider development programme. Employer bookings can be arranged by invoice, with VAT zero-rated for non-UK business customers.
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About the ADIT Qualification
The Advanced Diploma in International Taxation (ADIT) is awarded by the Chartered Institute of Taxation and is the leading international tax qualification for professionals working in cross-border tax. Candidates must pass three papers: Paper 1 (Principles of International Tax) and two option papers from a range of jurisdictional and specialist modules.
Holding ADIT, or a standalone certificate in an individual module, demonstrates a level of technical depth that goes well beyond generalist tax training. It is recognised globally, and particularly valued by professionals working in transfer pricing, tax treaty work, and cross-border advisory.
Holding ADIT, or a standalone certificate in an individual module, demonstrates a level of technical depth that goes well beyond generalist tax training. It is recognised globally, and particularly valued by professionals working in transfer pricing, tax treaty work, and cross-border advisory.
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Do you have questions about our online ADIT International Tax courses?
Please email our team on info@extrataxtraining.com or call us on +44 (0)28 9590 5990. We're happy to answer your questions on the ADIT qualification and your study options.
The part of my job that I love most is supporting our students throughout their ADIT studies.
Kristen Gillanders
Having been through the experience myself, I like helping others to realise their potential with the ADIT qualification.