Disengaging a client is a normal part of running a UK accounting practice. The process: confirm the decision is justified, give written notice in line with your engagement letter, complete or hand over critical work in progress, respond promptly to professional clearance from any successor, return or release records, settle outstanding fees, and update AML and CRM records. Avoid acting in heat; document each step.
When you should consider sacking a client
Some warning signs that a client relationship is no longer right:
- Persistent late payment and refusal to engage with your collections process
- Repeatedly missing information deadlines, causing late filing risk and additional cost
- Disrespectful or abusive communication with you or your team
- Reluctance to provide AML information or beneficial-owner identification
- Requests to act in ways that would breach your professional ethics or AML obligations
- Out-of-scope demands (e.g. unpaid extra work) without willingness to vary scope
- Strategic mismatch: the client has outgrown your practice or no longer fits your specialism
- Persistent loss-making relationship that no fee adjustment can fix
When you may have to disengage
In some circumstances disengagement may be required, not just sensible:
- You suspect the client is involved in money laundering or fraud, after appropriate consideration of SAR obligations
- You have an unresolvable conflict of interest
- You have lost the necessary skills or capacity to act competently
- You can no longer comply with your professional ethical or regulatory obligations
In these cases, take advice from your professional body's helpline before acting.
The disengagement process
- Confirm the decision internally: document the reasons and review with a partner or peer where possible
- Check the engagement letter: confirm the notice period and any required process
- Issue written notice: a formal disengagement letter setting out the effective date, what work will be completed before then, and what will not
- Complete or hand over work in progress: particularly any work that is critical to a client filing deadline
- Settle fees: issue a final invoice and apply your collections process if needed
- Cooperate with the successor accountant: respond promptly to professional clearance requests and provide handover information your body requires
- Return or release records: per professional body guidance, with care around any limited lien for unpaid fees
- Cancel software access, agent authorisations and direct debits: remove the client from HMRC agent services, Companies House Authentication codes, and your software stack
- Update AML and CRM records: close the client file and retain documents per AML retention rules (typically five years from end of relationship)
Sample structure for a disengagement letter
- Reference to the engagement letter and the right of either party to terminate
- Effective date of disengagement
- Summary of work being completed before that date
- Summary of work not being completed and the client's responsibility from the effective date
- Details of how to nominate a successor accountant and your willingness to cooperate with professional clearance
- Outstanding fees position
- Statement of any document handover
- A neutral, professional tone throughout
Professional clearance with a successor
When the client appoints a new accountant, the successor will normally write to you for "professional clearance". You should:
- Reply promptly (your professional body sets expectations)
- Confirm whether there are any professional reasons the successor should not accept the appointment
- Provide reasonable handover information once the client has authorised disclosure
- Not allow unpaid fees alone to block the necessary information to enable proper handover
If you are disengaging because you suspect money laundering, take advice before drafting your letter and before responding to professional clearance: the "tipping off" offence under the Proceeds of Crime Act 2002 limits what you can disclose. Your professional body's AML helpline is the right first call.
Things to avoid
- Disengaging without notice, mid-deadline, in a way that prejudices the client
- Acting in anger after a single difficult conversation; sleep on it first
- Withholding statutory documents the client is legally entitled to
- Slating the client to peers or in writing
- Failing to update HMRC, Companies House and software permissions
Key Takeaways
- Disengagement is a normal, occasional part of practice life; treat it as a process, not a confrontation
- Always issue a written disengagement letter with a clear effective date
- Cooperate with the successor accountant promptly and professionally
- Take advice from your professional body's AML or ethics helpline if the disengagement involves possible money laundering or ethical concerns
- Update AML and CRM records and retain documents per regulation
Frequently asked questions
Can I sack a client without giving a reason?
Generally yes, provided you give the notice required by your engagement letter and do not breach professional ethical or AML duties. You do not have to justify the decision in detail, but a short professional reason is usually appropriate.
How much notice should I give?
Often 30 days is reasonable for routine relationships, longer for clients in mid-engagement or with imminent filing deadlines. Follow whatever your engagement letter sets.
Do I have to find the client a new accountant?
No. You should advise the client to appoint a new accountant promptly and cooperate with professional clearance, but you are not obliged to identify a successor.
What happens to client records?
Statutory records belong to the client and should be returned. Your own working papers belong to you. Documents subject to a lien for unpaid fees are governed by professional body guidance and should be handled cautiously.
What if the client refuses to leave?
You can disengage unilaterally; the client cannot force you to act for them. Be clear in writing that the engagement is at an end on the stated date, and update HMRC and other records accordingly.