Switching accountants is one of those things business owners put off for years. The current firm isn’t terrible, just not quite right — slow to respond, maybe, or not particularly proactive. And the assumption is that moving will be disruptive, expensive, or awkward.

In our experience, those assumptions are almost always wrong. The professional handover process between accountancy firms is well established, your new accountant handles the bulk of it, and you shouldn’t be paying anything extra to leave. Most business owners who make the switch tell us they wish they’d done it sooner.

This post sets out the signs that it might be time to move, what the process actually involves, and what to look for when choosing who to move to.

There’s no single trigger that should make you switch. But there are patterns we hear consistently from new clients who’ve come to us after leaving a previous firm.

• You can’t get a straight answer. You send an email and wait days. When you do hear back, the reply doesn’t quite address what you asked. Communication should be a given, not a bonus.
• Everything feels reactive. Your accountant files your returns, but never flags anything coming up, never mentions a way to reduce your tax bill, never checks in. Compliance without advice isn’t really an accounting service — it’s just admin.
• You’ve outgrown them. Maybe you started as a sole trader and you’ve since taken on staff, started using a limited company, or expanded into a new area. Some firms are set up for a particular stage of business. If you’ve moved past that stage, it shows.
• The software is behind the times. Making Tax Digital has fundamentally changed how bookkeeping should work. If your accountant is still operating on spreadsheets and annual catch-ups, you’re likely missing useful, real-time visibility into your finances.
• Mistakes have cost you money. This one is fairly clear-cut. Errors in your accounts or tax filings, missed deadlines, or incorrect CIS deductions are serious — and a signal to act.

If one of these applies, it’s worth having a conversation with another firm. It costs you nothing and you’re not committed to anything by enquiring.

One of the most common misconceptions we come across is that you have to wait until the end of your financial year before switching accountants. You don’t. You can move at any point during the year.

The reason this myth persists is probably because people assume a mid-year switch creates a messy handover — split records, partial figures, nobody quite sure who’s responsible for what. In practice, the professional clearance process handles all of this. Your outgoing accountant provides the incoming firm with all the information they need: prior year accounts, tax returns, payroll records, and a confirmation that there are no professional reasons why the transfer shouldn’t proceed.

Reputable accountants — on both sides of the move — treat this as a normal, professional transaction. It happens regularly. Your new accountant writes to the previous firm, requests the records, and takes it from there. Your role in the handover amounts to signing a couple of documents, which typically takes around ten minutes of your time. The overall transition from start to finish usually takes one to three weeks.

There’s also no fee for leaving. Charging a client to disengage is considered unprofessional under the standards set by major UK accountancy bodies, including ACCA. If you’ve been told otherwise, that’s worth knowing.

The process is straightforward once you know what to expect. Here’s a broad outline:

1. Sign an engagement letter with your new accountant. This formalises the relationship and sets out what services you’re receiving and at what cost.
2. Sign a disengagement letter with your previous accountant. This closes the professional relationship cleanly and authorises the release of your records.
3. Professional clearance. Your new accountant contacts the outgoing firm directly, requests your records, and confirms the transfer. You don’t need to manage this exchange yourself.
4. HMRC authorisation. Your new accountant is added to your HMRC account as your authorised agent, giving them the access they need to act on your behalf.
5. Records handover. Prior year accounts, tax returns, and any bookkeeping history are transferred to the new firm.
6. Companies House update (if applicable). If you run a limited company, the new accountant’s details are updated at Companies House.
7. First filings under the new firm. Your new accountant takes things forward from there, whether that’s the next VAT return, payroll run, or year-end accounts.

None of these steps require significant time or effort from you. The bulk of the work sits with the professionals involved, which is as it should be.

Finding a better technical match matters, but so does finding the right working relationship. A few things worth thinking about before you make a decision:

Do they understand your type of business?

An accountant who works predominantly with, say, e-commerce sellers or construction businesses will think differently about your situation than a generalist practice. If your finances involve CIS deductions, property income, or online sales platforms, look for someone with hands-on experience in your area — not just familiarity with it.

Are they proactive or purely reactive?

Ask them directly: what does proactive support look like in practice? Will they flag upcoming deadlines before they arrive? Will they flag tax planning opportunities when they spot them, rather than waiting for you to ask? The difference between a firm that manages your compliance and one that actively helps you make better financial decisions is significant over time.

Are they easy to communicate with?

This sounds obvious, but it’s the thing that breaks most client-accountant relationships. What’s their typical response time? Can you reach them by phone, email, or message? Do they use plain English or lean heavily on jargon? The best technical accountant in the world is frustrating to work with if getting a reply takes a week.

Are they using modern tools?

Cloud accounting software — Xero, QuickBooks, FreeAgent — gives you real-time visibility into your numbers and makes collaboration much smoother. If your accountant isn’t set up for this, you’re working with an unnecessary information delay built into the relationship.