Regulated vs unregulated accountants

Q: How might this look in practice?

Illustration only. Two sole practitioners on the same high street both describe themselves as "accountants". Anna is an ICAEW member with a practising certificate. Ben qualified many years ago, let his membership lapse and now trades independently. Both can prepare accounts and file self assessment returns. Both must be supervised for anti money laundering (Anna by ICAEW, Ben by HMRC) and both must register with HMRC as tax advisers. Anna must carry professional indemnity cover at the ICAEW minimum, is subject to monitoring visits and can be disciplined by ICAEW. Ben has no body imposing those rules; whether he has insurance is his own choice. Neither can audit a company, take an insolvency appointment or prepare probate papers for a fee unless separately registered or licensed. If a client asks Ben to act as liquidator of their company, he must refer it to a licensed insolvency practitioner.

Anyone in the UK can legally call themselves an accountant: the word is not a protected title and needs no qualification, training or experience. What is controlled is certain work, such as statutory audit, insolvency appointments, probate and FCA regulated financial services, plus a few baseline rules that now apply to every paid adviser, including anti money laundering supervision and, from 2026, registration with HMRC. Being “regulated” usually means belonging to a professional body that checks competence, insurance and conduct, and that is the main difference a client will notice.

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Is “accountant” a protected title?

No. ICAEW’s own consumer guidance says that legally anyone can call themselves an accountant and that they do not need any qualifications, training or experience to do so. The same is true of “tax adviser” and “bookkeeper”. A person can set up tomorrow, prepare accounts and file tax returns for paying clients, and use any of those labels.

The government has said much the same about the tax advice market. In its consultation on raising standards in tax advice, it noted that almost anyone can start providing tax advice and services to clients, and can do so with limited or no oversight if they are not a member of a professional body. It also recorded responses pointing to the lack of barriers to entry and a lack of support for clients when things go wrong.

Descriptions linked to a professional body are different. “Chartered accountant”, for example, is controlled by the chartered bodies through their membership rules, and misuse is a disciplinary and sometimes a legal problem. Our page on using chartered accountant and firm descriptions explains those rules.

Which accountancy work does the law reserve?

Although the title is open, several activities that accountants commonly offer are restricted by statute. An unqualified practitioner who strays into them commits an offence.

Statutory audit. Under section 1212 of the Companies Act 2006 an individual or firm is eligible for appointment as a statutory auditor only if it is a member of a recognised supervisory body and eligible under that body’s rules. Section 1213 makes it an offence to act as statutory auditor while ineligible.
Insolvency appointments. Section 389 of the Insolvency Act 1986 makes it an offence to act as an insolvency practitioner, for example as a liquidator or administrator, without being qualified. See insolvency licensing for accountants.
Probate. Preparing the papers on which a grant of probate or letters of administration is founded is a reserved legal activity under the Legal Services Act 2007, and section 14 makes it an offence to carry it on without entitlement. See probate licences for accountants.
Financial services. Section 19 of the Financial Services and Markets Act 2000 prohibits carrying on a regulated activity unless authorised or exempt, and section 23 makes breach a criminal offence. See when accountants need FCA authorisation.

Day to day bookkeeping, accounts preparation, payroll and most tax compliance are not on that list, which is why an unqualified person can lawfully offer them.

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What rules apply to every accountant, regulated or not?

Three baseline requirements now catch almost everyone who is paid for accountancy or tax work.

Anti money laundering supervision

External accountants and tax advisers are defined in regulation 11 of the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017. HMRC’s guidance for accountancy service providers says a business offering services such as bookkeeping, accounts preparation or tax return help must register with HMRC for supervision unless it is already supervised by a professional body. An accountant outside the professional bodies is therefore still supervised, just by HMRC instead. More detail is in our guide to AML supervision for accountants.

HMRC registration for tax advisers

Section 224 of the Finance Act 2026 defines a tax adviser for the new mandatory registration regime. HMRC’s manual says all tax advisers who interact with HMRC on behalf of clients and are paid for that service must register, whatever their job title. Registration rolled out in stages from 18 May 2026, with the last windows running to 31 March 2027, and it is free. HMRC says advisers must complete their AML supervision registration before applying for an agent services account, and those who fail the registration conditions can be suspended from dealing with HMRC for clients.

The HMRC Standard for Agents

HMRC expects every agent to follow its Standard for Agents, covering integrity, professional competence and due care, and professional behaviour, regardless of professional body membership. HMRC estimates that around 65% of agents belong to a professional body. Where standards are not met, HMRC’s options include blocking access to its agent services and issuing dishonest tax agent conduct notices.

What does being regulated by a professional body add?

Membership of a body such as ICAEW, ACCA, ICAS, AAT or the Chartered Institute of Taxation brings a layer of oversight the law does not otherwise impose. Taking ICAEW as the example, its guidance says members in public practice will usually need a practising certificate and professional indemnity insurance, and fall within its Practice Assurance scheme, under which firms are periodically monitored by its Quality Assurance Department. Members also have to meet continuing professional development requirements and follow the body’s code of ethics.

For the client, that means:

a minimum level of professional indemnity cover set by the body’s regulations, so there is insurance behind a negligence claim (see professional indemnity insurance for accountants);
a complaints and disciplinary route to an organisation that can fine, reprimand or exclude the member;
an expectation of technical competence, backed by exams and ongoing training; and
ethical rules on conflicts, confidentiality and tax planning, such as Professional Conduct in Relation to Taxation.

An unaffiliated practitioner is not bound by any of those body rules. The government consulted on making professional indemnity insurance compulsory for all tax practitioners but decided not to proceed with that requirement.

How can a client check who they are dealing with?

Ask which professional body the practitioner belongs to and check the body’s public register or member directory.
Ask who supervises the firm for anti money laundering. The answer should be a named professional body or HMRC.
For audit, insolvency, probate or investment work, ask to see the specific registration or licence, because a practising certificate does not by itself cover those areas. Our page on practising certificates sets out what a certificate does and does not permit.
Read the engagement letter, which should state the regulator, the complaints process and the scope of the work.

How might this look in practice?

Illustration only. Two sole practitioners on the same high street both describe themselves as “accountants”. Anna is an ICAEW member with a practising certificate. Ben qualified many years ago, let his membership lapse and now trades independently.

Both can prepare accounts and file self assessment returns. Both must be supervised for anti money laundering (Anna by ICAEW, Ben by HMRC) and both must register with HMRC as tax advisers.
Anna must carry professional indemnity cover at the ICAEW minimum, is subject to monitoring visits and can be disciplined by ICAEW. Ben has no body imposing those rules; whether he has insurance is his own choice.
Neither can audit a company, take an insolvency appointment or prepare probate papers for a fee unless separately registered or licensed. If a client asks Ben to act as liquidator of their company, he must refer it to a licensed insolvency practitioner.

What mistakes come up most often?

Assuming “accountant” on a website means the person is qualified or insured. It may mean neither.
Assuming a former member is still regulated. Once membership lapses, the body’s rules and complaints route no longer apply to new work.
Treating HMRC registration as a quality mark. It confirms baseline conditions such as AML supervision, not technical competence.
Letting an accountant handle probate, insolvency or investment work without checking the separate authorisation each requires.
Not asking a new adviser for their professional body and AML supervisor details before engaging them.

Solar Protect runs fee protection schemes for accountancy and bookkeeping practices. See how our accountant schemes work or read fee protection schemes for accountants.

Related Accountapedia entries

Sources

Reviewed by Christine Anderson, Broker, Solar Protect. Last reviewed 8 October 2026. Part of Accountapedia, the Solar Protect guide to UK tax and accounting. This page is general information, not personalised advice.