When is the best time to switch accountants?

Deciding to switch accountants is often one of those things business owners put off—not because they don’t want to do it, but because the timing never feels quite right. There’s always a looming tax deadline, a VAT return due, or the day-to-day pressures of running a business.

The good news? There’s no rigid rule about when you can or can’t switch accountants. It can be done at almost any point in the year. But is there a “best” time to make the move? Some points in the business cycle are more convenient than others and can make the process a little smoother.

This article explores the best times to change accountants, what to consider, and how to avoid common timing pitfalls.

Can You Switch Accountants Anytime?

Yes, you can switch accountants whenever you choose. There are no legal restrictions or fixed dates that prevent you from making the change.

Accountants are used to clients moving from one firm to another—it’s a normal part of the profession. Whether you’re mid-way through your financial year, halfway to a VAT deadline, or even partway through a tax return process, switching is always possible.

That said, certain times are more convenient and less disruptive than others.

The Best Times to Switch Accountants

1. At Your Financial Year-End

The most natural point to change accountants is at the end of your financial year. This is when your old accountant finishes preparing your year-end accounts and tax returns. Starting fresh with a new accountant from the start of a financial year is tidy, clear, and avoids any confusion about who is responsible for what.

It means the new accountant handles the full year going forward, making your records cleaner and easier to manage.

2. After Major Filings Are Done

If you’re approaching a deadline—like a VAT return, payroll year-end, or self-assessment—it’s often simplest to let your current accountant finish that process. Once the submission is complete, the switch can happen without disrupting compliance work.

This avoids any confusion about whether your old or new accountant is handling the submission.

3. At the Start of a New Tax Year (for Sole Traders or Individuals)

For individuals or sole traders, April (in the UK tax calendar) is a logical time to switch. You’re starting a fresh tax year, and the new accountant can handle the records for the full period.

4. Before Key Projects or Changes in Your Business

Planning to change your business structure, register for VAT, or hire staff for the first time? It makes sense to switch beforehand, so your new accountant can be involved from the start and set things up the right way.

5. When Issues Arise That Can't Wait

Sometimes, the best time to switch is simply now. If you’re experiencing poor service, communication breakdowns, unexpected fees, or lack of trust, waiting for the “perfect” time isn’t always wise.

Many accountants are experienced in taking on clients mid-year and handling mid-cycle handovers professionally.

Times When Switching Might Be Less Ideal (But Still Possible)

While it’s always possible to change, some situations might require a bit more planning:

• Midway through a VAT period: Not a deal-breaker, but it needs clarity on who’s handling the return.

• During complex tax investigations or audits: It’s usually better to wait until it concludes unless your current accountant is part of the problem.

• If major filings are incomplete: Confirm who will finish them. Starting with a new accountant mid-task can lead to confusion unless carefully managed.

A good new accountant will help you navigate these scenarios, but it’s important to have clear communication about responsibilities during the transition.

What About Fees and Contracts?

Check whether your current accountant has any notice periods in their engagement letter. While most accountants work on a rolling basis, some may require 30 days’ notice.

Also, ensure all outstanding fees are paid. Accountants are required to provide your records to your new accountant, but unresolved bills can delay the process.

How Long Does Switching Take?

• Notifying your current accountant: Immediate—it’s typically a simple email.

• Professional clearance (a formal letter from the new accountant to the old): Often within a couple of days.

• Transfer of records: Usually within 1–2 weeks, though it depends on how responsive your old accountant is.

• Full onboarding with your new accountant: Usually completed within 2–4 weeks.

This means that if you’re organised, the entire process can be wrapped up within a month.

Planning the Handover

No matter when you switch, a smooth handover depends on clear communication. Your new accountant will handle most of this, including:

• Requesting handover files and records

• Asking for tax computations, prior year accounts, and bookkeeping data

• Getting authorisations in place (such as 64-8 for HMRC in the UK)

You’ll typically need to provide ID and sign some authorisation forms, but beyond that, your involvement is minimal.

Should You Wait or Switch Now?

If your current accountant is meeting your needs and you’re near year-end, waiting can make the process tidier. But if you’re unhappy—whether because of poor communication, lack of advice, rising fees, or trust issues—waiting rarely improves the situation.

It’s better to be with an accountant who understands your business and gives you the right support, even if it means switching mid-year.