CA, CPA and IPA mean that an accountant is a member of one of Australia's three recognised professional accounting bodies. Those are Chartered Accountants Australia and New Zealand, CPA Australia and the Institute of Public Accountants. The word "accountant" on its own is not protected by law. The letters show that the person has met a body's rules on education, ethics and ongoing training. They do not replace the legal registration needed to charge for tax work or to do audits.
Is "accountant" a protected title in Australia?
No. No state or territory in Australia protects the word "accountant". The same goes for terms like "public accountant" or "practising accountant".
The Institute of Public Accountants (IPA) points out the result. Someone can offer services as an accountant without a recognised qualification, ongoing training or insurance. They also don't have to follow professional and ethical standards or go through quality reviews. The IPA estimates that about half of the people who call themselves accountants are not members of any of the three professional bodies.
That is why the letters after a name can tell you something useful.
What do CA, CPA and IPA stand for?
- CA (Chartered Accountant): a member of Chartered Accountants Australia and New Zealand (CA ANZ).
- CPA (Certified Practising Accountant): a member of CPA Australia. Only fully qualified members, meaning those with the CPA or FCPA designation, can provide public accounting services.
- IPA: a member of the Institute of Public Accountants. The exact letters depend on the person's membership level.
Joining any of the three bodies is voluntary. All three still require an accredited or recognised university degree, completion of their own professional program, structured practical experience and ongoing professional development. Members of all three must follow the same code of ethics, known as APES 110 Code of Ethics for Professional Accountants.
How do the three bodies' standards differ?
The three bodies share more than they differ. The main differences are in how each one runs its rules for members who work in public practice (serving clients) and how it sets training hours.
Chartered Accountants ANZ (CA)
A CA who is a principal in a practice providing public accounting services must hold a Certificate of Public Practice. To get one, they need to complete the Public Practice Program, hold professional indemnity insurance that meets the body's requirements, and be up to date with their professional development hours.
Everyone holding a certificate is subject to CA ANZ's quality and practice review program. These reviews check whether the practice has systems in place to follow the code of ethics, professional standards and the law.
All CAs must complete at least 120 hours of continuing professional development (CPD) every three years. At least 90 of those hours must be verifiable, at least 20 must be done each year, and at least 6 must be verifiable ethics training.
CPA Australia (CPA)
A CPA Australia member who provides public accounting services must hold either a Public Practice Certificate or a Limited Public Practice Certificate. The full certificate is for members earning, or planning to earn, more than $45,000 a calendar year in gross fees from public accounting work. The limited certificate covers those earning between $10,000 and $45,000.
Either way, the member must hold professional indemnity insurance and complete the Public Practice Program. Certificate holders take part in a Professional Standards Scheme that limits their liability. Their promotional material must carry the statement "Liability limited by a scheme approved under Professional Standards Legislation".
Institute of Public Accountants (IPA)
The IPA requires members who offer accounting services to the public to hold a professional practising certificate.
The IPA's training rules changed in 2026. From the CPD year starting 1 July 2026, members must complete at least 40 hours of CPD in each one-year period. At least 30 hours must be verified and 10 can be unverified. This replaces the earlier rule of 120 hours over three years.
CA, CPA and IPA compared
The table below sets out the main points for each body, plus an accountant who belongs to none of them.
| Body | Practice licence | Training rule |
|---|---|---|
| CA ANZ (CA) | Certificate of Public Practice | 120 hours every three years |
| CPA Australia (CPA) | Full or limited practice certificate | Set by CPA Australia |
| IPA | Professional practising certificate | 40 hours a year from July 2026 |
| No membership | None from a body | None from a body |
Do CA, CPA or IPA letters mean they can do my tax return?
Not by themselves. Belonging to a professional body is separate from the legal registration needed for tax work.
The Tax Practitioners Board (TPB) says that accountants in a professional association must still be registered with the TPB if they charge a fee or receive a reward for tax agent services. Only registered tax agents can charge to prepare tax returns. A friend or family member can help you with your return, but they can't charge for it.
The TPB public register lists registered tax and BAS agents. It also shows any breaches of the Code of Professional Conduct and any sanctions on the public record. Some practitioners have conditions on their registration that limit the services they can provide, and the register shows these too.
What about audits and self-managed super funds?
Audits have their own registration rules as well. A self-managed super fund (SMSF) must be audited every year by an approved SMSF auditor who is registered with ASIC.
ASIC's professional registers search covers registered company auditors, authorised audit companies, liquidators and approved SMSF auditors. You can search by name, registration number, ACN or ABN, and most of the information is free.
Does it matter for an individual or a small business?
It depends on the job. For a tax return, the legal requirement is TPB registration, whatever letters the person has.
Membership of a professional body adds extra layers on top of that:
- a shared code of ethics
- minimum training hours each year
- required professional indemnity insurance for members in public practice
- quality reviews of practices
- a professional body that can discipline members
These protections only apply to members. The IPA notes that one accountant convicted of a fraud involving $1.5 million in client money was able to keep working in public practice after losing their membership, because the title itself is not regulated.
On which body is "best", the three are recognised side by side within Australia's regulatory framework, and their members follow the same ethics code. The letters show that someone has met a minimum standard. They don't show whether the person has experience with your kind of situation, such as rental properties, a trust or running payroll. For more on comparing accountants, see how to choose an accountant in Australia.
How to check an accountant's credentials
- For tax work, search the TPB register and check that the registration type matches the work. Tax agents can prepare tax returns. BAS agents can only provide some of the services tax agents can.
- For audits, including SMSF audits, search ASIC's professional registers.
- Ask which professional body they belong to and whether they hold that body's public practice certificate.
When it is worth getting a professional
A registered tax agent or accountant can help with situations a simple return doesn't cover. Examples include business income, investments, capital gains, a trust or company structure, or a backlog of returns that were never lodged.
FIZO shows whether an accountant or tax agent is on the regulator's register before you contact them. You can browse accountants on FIZO and compare their registrations side by side.