Most directors who switch accountants say afterwards that the call to start the process took longer than the process itself. The hesitation is almost always about the perceived difficulty of the move, not the decision itself. In practice, the transfer is handled between firms and can happen at any point in your financial year.
This guide covers the mechanics of a switch: what happens, what your obligations are, and what to watch out for at each stage. If you are appointing an accountant for the first time rather than switching, the evaluation criteria are the same. The red flags, qualifications and fee-structure articles below apply equally.
Why directors change accountants
The trigger is rarely a single event. More often, it is a gradual realisation that the level of support no longer matches the complexity of the business:
- -Unresponsiveness. Emails take days. Calls go unreturned. You cannot get a straight answer to a straightforward question about your tax position. This is the most common complaint, and it compounds over time.
- -No advice between deadlines. Your accountant files on time but never raises tax planning, director pay or decisions coming up before year-end. You are paying monthly for what is effectively an annual service.
- -Fee surprises. Additional charges appear for work you assumed was included: phone calls, ad hoc queries, payroll adjustments. Predictability matters for a limited company director.
- -Outgrowing the firm. The accountant who was right at £50,000 turnover may not be equipped for a £300,000 business with employees, VAT obligations, and dividend extraction decisions. Growth changes what you need, and not every firm scales with you.
If any of these apply, the question is not whether to switch, but how to do it cleanly.
Step 1. Initial discussion
Before anything formal happens, you speak with the prospective new firm. A good initial discussion should cover your company structure, current services, what is and is not working, and what you need going forward. Use this conversation to assess whether they are asking the right questions, not just quoting a fee.
You do not need to inform your current accountant at this stage. The initial discussion is to understand the business, the current issues and the likely scope before you decide whether to proceed.
Step 2. Professional Clearance
Once you decide to switch, your new accountant sends a professional clearance letter to your current firm. This is a standard requirement under accounting professional body regulations (ICAEW, ACCA, CIMA). Your current accountant is obligated to respond. They cannot refuse or ignore the letter.
The clearance letter confirms there are no outstanding professional issues (e.g. unpaid fees, unresolved disputes, or matters you should be aware of). In the vast majority of cases, clearance is granted within a few days without complication. You do not need to be involved in this exchange. It is handled between firms.
Step 3. Transfer of records and HMRC authorisation
Your previous accountant transfers your records: prior year accounts, tax computations, VAT returns, payroll data, and any working papers. If you use cloud accounting software (Xero, FreeAgent, QuickBooks), the new accountant is simply granted advisor access to your existing account. No data is lost.
Simultaneously, your new accountant registers as your authorised agent with HMRC for Corporation Tax, PAYE, and VAT as applicable. This is a digital process. HMRC does not need to approve the change, and there is no gap in coverage. Your filing deadlines remain unchanged. For a closer look at how we manage this process, see how we handle the switch.
Can I switch mid-year?
Yes. There is no requirement to wait until your year-end or a set date. Limited companies can change accountants at any point during the financial year. Your new accountant picks up from where the previous firm left off. This is standard practice and creates no compliance risk when the handover is managed cleanly.
How long does it take?
The formal transfer depends on how quickly your previous accountant responds to the clearance request and provides records. Once clearance is granted and records are received, your new accountant can begin work immediately. Most directors notice no disruption to their day-to-day operations.
Choosing the right replacement
If you are switching because your current firm is not meeting your needs, write down what you need before approaching a replacement. Consider:
- -Do you need ongoing regular reporting, or is annual compliance sufficient?
- -Do you need tax planning advice throughout the year?
- -Do you want a single named point of contact, or are you comfortable with a team model?
- -Do you need advice for a particular sector, such as CIS compliance, property tax, or e-commerce?
The clearer you are about what you need, the easier it is to evaluate whether a prospective firm is the right fit. Our due-diligence checklist covers the 20-minute routine we recommend running before signing, and the qualifications guide decodes the letters after an accountant's name so you can tell chartered from unregulated.
Frequently asked questions
Do I need permission from my current accountant to switch?
No. You are free to appoint a new accountant at any time. You do not need your current accountant's consent, and they cannot prevent the transfer. The professional clearance process is a courtesy between firms, not a request for permission.
Can my old accountant refuse to release records?
Your accounting records belong to you. Your previous accountant must return them. The only exception is their own working papers (internal notes, draft computations), which are their intellectual property. In rare cases, an accountant may exercise a lien on your records if there are unpaid fees, but this is unusual and typically resolved quickly once the debt is settled.
Will switching affect my Corporation Tax filing?
Not if the transfer is managed properly. Your Corporation Tax deadlines remain unchanged, and your new accountant picks up responsibility once HMRC agent authorisation is in place. A well-managed handover specifically ensures no filing deadlines are missed during the transition.
Do I need to tell HMRC myself?
No. Your new accountant handles the HMRC agent authorisation process digitally. They register as your authorised agent for Corporation Tax, PAYE, and VAT as applicable. You do not need to contact HMRC separately.
What if I am partway through my year-end accounts preparation?
Your new accountant can take over mid-preparation. They will request any draft work completed by the previous firm and continue from that point. In practice, many directors switch precisely because their year-end is being delayed, and the new firm often completes the work faster because they are motivated to start the relationship well.