How to Change Accountants: A Simple UK Guide (2026)

If you’re unhappy with your accountant, here’s the good news: changing accountants is far easier — and far more common — than most people think. You don’t have to put up with slow replies, surprise bills or missed deadlines out of loyalty or fear of the hassle. Accountants switch clients between each other all the time; there’s a well-worn, professional process for it.

Most of the worry is in your head, not in the paperwork. People imagine awkward break-up conversations, being “held hostage” by their records, or some painful gap where nothing gets filed. In practice, a good new accountant does most of the heavy lifting, and you carry on running your business while it happens quietly in the background.

This guide walks you through when to switch, exactly how the process works, how long it takes, and what (if anything) it costs — including how to handle exit or “release” fees if your current firm tries to charge one.

Signs it’s time to change accountants

You don’t need a dramatic reason to switch. But if a few of these feel familiar, it’s probably time:

• They’ve gone quiet. Emails ignored for days or weeks, calls that go to voicemail no one returns, or a different faceless person every time. Unresponsiveness is the single most common reason people leave.
• Surprise bills. Being charged per email or per phone call, or a year-end invoice far bigger than you expected, with no warning.
• Missed or last-minute deadlines. Returns filed at the eleventh hour — or late, landing you with HMRC or Companies House penalties.
• No proactive advice. They file what you send and nothing more. A good accountant should flag tax savings, warn you about changes like Making Tax Digital, and tell you things before you have to ask.
• You’ve outgrown them. You started as a sole trader, you’re now a limited company with VAT and payroll, and they haven’t kept up.
• You simply don’t trust the numbers. If you’re second-guessing their work, that’s reason enough.

None of these mean you’ve done anything wrong. They mean the relationship isn’t working — and you’re allowed to change it.

Can you change accountants mid-year?

Yes — at any time. This is the question that holds most people back, and the answer is reassuringly simple. You do not have to wait until your year-end, until your accounts are filed, or until any particular return is done. There’s no “notice period” set by HMRC.

Your new accountant simply picks up your records wherever they currently are and continues from that point. If you’re mid-VAT-quarter or halfway through your accounting year, that’s completely normal. The only thing worth checking is whether your old accountant has any work in progress they were about to finish — more on that below.

How to change accountants: the step-by-step process

Here’s exactly how a switch works in the UK. The good news is that steps 2 to 4 are mostly handled for you — your job is really just steps 1 and 5.

1. Find and appoint your new accountant. Compare what’s included and how quickly they reply, not just the price — our guide on how to choose an accountant walks through this. Once you’ve chosen, you’ll sign an engagement letter (which sets out the service and fee) and complete some quick anti-money-laundering ID checks. This is the point at which you’re officially “on board”.
2. They request professional clearance and handover. Your new accountant writes to your old one with a professional clearance letter — a routine courtesy asking whether there’s any reason they shouldn’t act for you, and requesting copies of your records and information. You don’t write this letter; you just authorise them to send it.
3. Your records and data transfer across. The old accountant passes over the information needed to continue your work — last year’s accounts, tax computations, payroll details, and access to your bookkeeping software (Xero, QuickBooks or FreeAgent). Remember: your underlying records — your own invoices, receipts and bank data — belong to you and you’re entitled to them.
4. The new accountant is authorised with HMRC. To deal with HMRC on your behalf, they complete agent authorisation (often called a 64-8). HMRC posts a code to you to confirm it, or it’s done online. Once it’s active, HMRC deals with your new accountant directly. It’s worth confirming the old agent’s authorisation is removed so they can no longer see your tax account.
5. Confirm what the old accountant still needs to finish. Agree clearly who is doing what — for example, whether the old firm is completing the set of accounts they’d already started, or whether your new accountant takes the whole year. Getting this in writing avoids anything falling through the gap.

That’s the entire process. For most small businesses it’s a couple of signatures and a short wait.

How long does it take?

Usually one to two weeks from start to finish. The main variable is how quickly your old accountant responds to the clearance request — most are professional about it and reply promptly; a few drag their feet. HMRC’s agent authorisation can add a few days on top.

Crucially, the switch rarely interrupts anything. You keep trading, your bookkeeping carries on, and as long as you start in reasonable time before a deadline, nothing gets filed late because of the move.

What it costs — and dealing with exit or “release” fees

In most cases, switching costs you nothing. Your new accountant won’t charge you to take you on (their fee starts when your service starts), and a professional outgoing accountant will release your information as a matter of course.

Two things to watch for:

• Outstanding invoices. Your old accountant can usually hold off on the handover until you’ve paid any genuine outstanding fees. So settle your account before you leave to keep things smooth.
• Exit or “release” fees. Some firms charge to “release” your records or close your file. Check your engagement letter — if you never agreed to such a fee, you can push back. And remember the key principle: a good accountant won’t hold your own data to ransom. You’re entitled to your underlying records regardless of any dispute about extra work.

If a firm tries to make leaving difficult or expensive, treat it as confirmation you’re making the right call.

How to make the switch painless

A few simple things keep it stress-free:

• Choose your new accountant before you tell the old one. There’s no need for an awkward break-up conversation first — once you’ve appointed someone, the clearance letter does the talking. A short, polite email to your old firm is all that’s needed.
• Pay off any outstanding fees so there’s no reason to delay your handover.
• Hand over logins and recent records quickly when asked, so your new accountant isn’t waiting on you.
• Pick a quieter moment if you can — switching well ahead of a big deadline is calmer than the week before, though it can be done any time.
• Lean on your new accountant. The whole point is that they do the legwork. If they’re good, you’ll barely feel the change.

It’s also worth a quick read of what an accountant should cost and include while you’re at it — see accountant fees for small business and how much does an accountant cost — so your next one is a better fit than your last.

The bottom line

Changing accountants is a normal, low-stress process that mostly happens behind the scenes. You appoint someone new, they sort out clearance, your records, and HMRC, and within a week or two you’re settled — usually at no cost, and without missing a beat. You really don’t have to settle for an accountant who ignores you or springs surprise bills.

If you’d like to move to a named accountant with fixed, transparent pricing and replies within one working day, you can switch to Provense — get a fixed-price quote and I’ll handle the handover for you, or take a look at our simple monthly pricing first.