Organisations need to be doing more TeamMate ACL Audit efficiency

"I encourage everyone in my internal audit unit to take the IIA's qualifications"

Brian Moreland CMIIA

The advice, training and support from the Institute have been invaluable since I joined as a trainee internal auditor. I have taken a keen interest in the increasing emphasis on professionalism.

I encourage everyone in my internal audit unit to take the IIA's qualifications as they are second to none in providing a solid foundation for the provision of an effective service to management.

Brian Moreland CMIIA
Head of Internal Audit, Northern Ireland Assembly 

IIA Diploma

Become a professionally qualified internal auditor

Serious about a career in internal audit? The IIA Diploma will help you develop the comprehensive skills you need for effective internal audit delivery.

This professional qualification is a stimulating, rewarding postgraduate programme. It's the benchmark for the profession and considered by employers to be a mark of quality.

Take the IIA Diploma and you will:

  • Gain an in-depth understanding of internal audit, risk management and control, and corporate governance
  • Enhance your career prospects     
  • Earn the PIIA designation
  • Take the first step to becoming a Chartered Internal Auditor

Find out what you will learn in the syllabus


To register on the IIA Diploma you must have either an undergraduate degree or have your application endorsed by your employer confirming your ability to take on postgraduate level studies.

Studying for your qualification 

There are five theory modules to complete and you will be assessed by exams and your Professional Experience Journal (PEJ).

Tuition is compulsory when you study the IIA Diploma, unless you are studying the accelerated route. Our in-house tuition provider, IIA Learning, offers a range of options, including face-to-face tuition and a distance learning programme to support you. 

Most people take around two years to complete the qualification. 

IIA Diploma - accelerated route 

If you hold a postgraduate qualification and have been working in internal audit for three years, you may be eligible for the accelerated option.

Read more about the IIA Diploma - accelerated route 


If you're not eligible for the accelerated route, you may still be eligible for exemptions if you have already covered some of the content in another qualification.

See if you're exempt

Register for the IIA Diploma

To study for the IIA Diploma, you need to be an IIA member. 

New to the IIA? Join as a student member

Existing IIA member? Register for the IIA Diploma

Not based in the UK or Ireland?

Please read our guide to studying our qualifications overseas before you apply for membership.