Do AML rules apply to bookkeeping and payroll clients

Q: How does this apply to a typical small bookkeeping practice?

Illustration only. A sole trader bookkeeper with one part time assistant keeps the books for 40 small businesses, runs payroll for 12 of them, files VAT returns, and lets four clients use her office as their registered office. Her bookkeeping and payroll make her an external accountant; filing VAT returns and calculating PAYE make her a tax adviser; the registered office service makes her a trust or company service provider. She needs supervision covering all three activities, due diligence on every client, written procedures and training for her assistant. Because she employs someone, she must appoint a nominated officer, which will usually be herself. Her client onboarding process should put identity checks before any work begins.

Yes, in almost every case. The Money Laundering Regulations cover any firm or sole practitioner who provides accountancy services to others by way of business, and HMRC treats bookkeeping and payroll as accountancy services because they involve recording, calculating and reporting financial information for clients. Payroll work is often also tax advice under the wide definition in regulation 11(d). Only a few narrow situations fall outside.

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Which accountancy work do the Regulations cover?

Regulation 8 of the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017 (the MLRs) applies them to auditors, insolvency practitioners, external accountants and tax advisers, among others. Regulation 11 defines the two categories that catch most small practices:

an external accountant is a firm or sole practitioner who by way of business provides accountancy services to other persons, when providing such services;
a tax adviser is a firm or sole practitioner who by way of business provides material aid, or assistance or advice, in connection with the tax affairs of other persons, whether directly or through a third party.

The same activities put the business in the regulated sector for the reporting offences in the Proceeds of Crime Act 2002, through Schedule 9 paragraph 1(1)(l) and (m). HMRC calls these firms accountancy service providers, or ASPs.

Why is bookkeeping treated as an accountancy service?

The MLRs do not define accountancy services. HMRC’s Economic Crime Supervision Handbook (ECSH52525) describes them as recording, reviewing, analysing, calculating or reporting on financial information for other people, and lists bookkeeping, accounts preparation and payroll services as examples. ECSH43531 states plainly that a business supplying bookkeeping services falls within the Regulations even if it does not call itself an accountant.

The reasoning is practical. A bookkeeper sees the client’s bank transactions, sales and supplier payments every month. That is exactly the vantage point from which unusual cash, unexplained third party payments or round sum transfers become visible, which is why the regime applies to the person doing the recording, not only to the person signing the accounts.

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Why is payroll work usually in scope?

ECSH43531 names a payroll agent calculating tax liability, earnings or payments made to a business’s employees as an example of an in scope business. ECSH52725 describes the typical payroll agent: calculating income tax and National Insurance contributions, preparing payslips, P45s and P60s, submitting Real Time Information returns and sometimes making BACS payments from the client’s account. That work is accountancy services, and calculating PAYE and submitting returns is also material aid or assistance in connection with the client’s tax affairs, so it meets the tax adviser definition too.

Since the definition of tax adviser was widened from 10 January 2020, HMRC’s handbook says it includes help completing and submitting tax returns, duty claims or repayment claims, and advising whether something is taxable or how much is due. A bookkeeper who files VAT returns is therefore a tax adviser as well as an external accountant.

What does by way of business exclude?

The services must be provided to other persons by way of business. HMRC’s guidance identifies several situations that are outside the Regulations:

employees doing the work for their own employer, such as an in house accountant or payroll department (ECSH52525);
services provided on a non commercial basis;
services for another member of the same group, or for a related party;
community accountancy provided free by a registered charity, or for a small charge where profits cannot be distributed or the service is subsidised by local or central government grants.

HMRC says a nominal fee does not automatically mean the work is not by way of business, so each case turns on its facts. Helping a friend for nothing is outside; a sideline charging a modest fee to several clients is likely to be inside.

Which payroll and support work falls outside?

ECSH43531 says a payroll services provider to a third party is not an ASP if it only does one or more of the following:

provides software or hardware support for payroll processing, without analysing or preparing financial information;
pays invoiced service fees to self employed people, umbrella companies, partnerships or other corporate service providers;
operates as an umbrella or managed service company running payroll for its own workers on assignment;
provides recruitment or HR services with payroll as a small part of the main business.

Virtual assistants need not register if virtual assistance is the main activity, annual turnover is under £30,000, accountancy work is no more than 5% of turnover and supports the main business, there is no other activity needing registration, and all the accountancy work is reviewed by a supervised accountant or bookkeeper.

What about bookkeepers who only work for other firms?

A subcontract bookkeeper or payroll bureau working solely for supervised firms is still carrying on relevant business, but ECSH43531 says it does not need to register with HMRC if it does not deal directly with the end clients, it is within the supervised firm’s AML policies, reporting and training, and a written contract confirms the arrangement covers all AML requirements for the whole relationship. If any of those conditions fails, for example because the subcontractor also takes on its own clients, registration is needed.

What does being in scope mean in practice?

An in scope bookkeeper or payroll provider must:

be supervised, either by a professional body listed in Schedule 1 to the MLRs, such as AAT, the Institute of Certified Bookkeepers, ICAEW or ACCA, or by HMRC if it has no professional body supervisor; HMRC says trading without registration is a criminal offence (see AML supervision for accountants);
carry out a firm wide risk assessment and maintain policies, controls and procedures;
apply customer due diligence when establishing a business relationship under regulation 27, which for monthly bookkeeping or payroll is almost always the position (HMRC says occasional transactions are uncommon for ASPs);
train staff and appoint a nominated officer, unless a sole practitioner with no staff or associates;
report knowledge or suspicion of money laundering, as failure to disclose by someone in the regulated sector is an offence under section 330 of the Proceeds of Crime Act 2002.

Watch for services beyond accounting. ECSH52725 notes it is not unusual for an ASP to provide an ancillary trust or company service, such as a registered office address, in which case it is also a trust or company service provider and its registration must reflect that.

How does this apply to a typical small bookkeeping practice?

Illustration only. A sole trader bookkeeper with one part time assistant keeps the books for 40 small businesses, runs payroll for 12 of them, files VAT returns, and lets four clients use her office as their registered office. Her bookkeeping and payroll make her an external accountant; filing VAT returns and calculating PAYE make her a tax adviser; the registered office service makes her a trust or company service provider. She needs supervision covering all three activities, due diligence on every client, written procedures and training for her assistant. Because she employs someone, she must appoint a nominated officer, which will usually be herself. Her client onboarding process should put identity checks before any work begins.

What are the common mistakes?

Assuming the Regulations apply only to qualified accountants.
Treating a payroll only service as outside scope when it calculates PAYE and files RTI returns.
Subcontracting for a firm without a written agreement covering AML, then relying on the subcontract exemption.
Offering a registered office address without registering as a trust or company service provider.
Doing due diligence on the business but not its beneficial owners.
Assuming that small fees mean the work is not by way of business.

For the practical requirements on a one person business, see AML for sole practitioners.

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

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Reviewed by Christine Anderson, Broker, Solar Protect. Last reviewed 19 October 2026. Part of Accountapedia, the Solar Protect guide to UK tax and accounting. This page is general information, not personalised advice.