ADIT

About the role

The Advanced Diploma in International Taxation (ADIT) from the Chartered Institute of Taxation (CIOT) is the global standard for professionals specializing in international and cross-border tax. It is ideal for tax advisers, transfer pricing specialists, and in-house tax professionals working with international clients or cross-border structuring.

Who it's for

Tax professionals and advisers working across borders, particularly those serving international clients or involved in cross-border tax structuring, transfer pricing, or in-house tax roles.

Structure

• Three module exams: the mandatory Principles of International Taxation, plus two optional modules (or an extended essay).
• All modules must be completed within five years.
• Modular and flexible study timeline, typically completed in 1–2 years.

Skills you'll build

• International tax principles
• Double-tax treaties
• Transfer pricing
• Cross-border structuring
• Jurisdiction-specific tax knowledge

Continuing Professional Development (CPD)

CIOT members are required to complete CPD relevant to their tax work each year.

Best free resources for this path

• CIOT — ADIT resources

  Free past papers, syllabus, and examiner reports for ADIT international-tax modules.

  How to start: Visit tax.org.uk/adit and download the past papers and study guides.

• Deloitte IFRS e-Learning

  45+ free modules covering IFRS standards, with a certificate upon completion.

  How to start: No registration required to study; add your name before the assessment for the certificate.

• Big 4 free webcasts (Deloitte/PwC/EY/KPMG)

  Free, CPE-eligible webcasts on tax, audit, accounting, and regulation from the Big 4 firms.

  How to start: Search for "webcasts" or "Dbriefs" and register free per session.

• Coursera & edX

  Thousands of university finance and accounting courses available to audit for free; financial aid available for certificates.

  How to start: Create a free account, click "Audit," or apply for financial aid for a certificate.

• Microsoft Learn — Excel & Power BI

  Free, self-paced training in Excel and Power BI, essential skills for finance professionals.

  How to start: Free with a Microsoft account; the optional PL-300 exam is paid.

Paths you might also consider

• ATT / CTA: The UK's dedicated tax qualifications, from ATT (technician) to CTA (chartered adviser).
• EA (Enrolled Agent): A US tax specialist license issued by the IRS, open to anyone without a degree requirement.
• CPA: The premier US accounting license for audit, tax, and reporting.