When you are switching accountants, what are you actually afraid of losing?
Most owners who want to move stay put for another year. We think the fear is misplaced, and the cost of staying is larger than the cost of moving. Here is how we see it.
Published 27 September 2026
6 min read
Gavin Jardine, Director, MIAB
When you are switching accountants, the thing that stops most owners is not the paperwork. It’s the picture in your head of VAT missed, payroll wrong, and a year end nobody owns while two firms argue about who has what.
I understand that picture. I also think it describes a badly run handover rather than handovers in general. The work is known, the sequence is known, and none of it needs you sitting in the middle forwarding emails.
So the question worth asking is a different one. If your numbers already arrive too late to act on, what does another year of that cost you in decisions you take half blind: the hire, the price rise, the supplier you’re not sure is worth keeping?
Below is what actually happens in a move, what disruption is real, and what a managed handover takes off your desk.
What owners are really afraid of when they move
The fear has three parts, and only one of them is about accounting.
The first is a gap in compliance. A VAT return falls due mid-switch, or a payroll run lands before the new agent has authorisation, and nobody is watching it. That risk is real and it is entirely a question of sequencing.
The second is awkwardness. You have known this accountant for years, they did your first set of accounts, and telling them feels like sacking a friend. An email is normally enough, and you do not owe anyone a reason.
The third is the one owners rarely say out loud. If the records turn out to be a mess, that becomes visible, and it feels like your mess. In my experience it usually isn’t. Records drift when nobody has been asked to keep them to a routine, and that is a process failure rather than a character one.
Here is the part that gets missed. Staying put has a cost too, and it is paid monthly in decisions you make without figures. It just never arrives as an invoice, so nobody counts it.
What a managed handover actually removes from your desk
Ardein manages the handover from your current accountant or bookkeeper, and there is no separate charge for it. That is a service promise, not a discount.
In practice it means five things leave your to-do list:
- The professional clearance letter and the follow-up when it goes unanswered.
- Collecting the records: trial balances, working papers, filed returns, payroll data and the opening balances everything else rests on.
- Agent authorisations with HMRC, handled in the right order so nothing falls between the two of us. HMRC’s own guidance on changing or removing a tax agent is clear that a new authority replaces the old one.
- A responsibility map, so you can see on one page who does what and by when.
- A transition plan built around your year end and your VAT quarters, not around our convenience.
Your part is short. You confirm the scope, complete the anti-money-laundering checks, and send one email to say you are moving. After that you answer questions when they come.
Staying put has a cost as well, and you pay it monthly in decisions made without figures. It never arrives as an invoice, so nobody counts it.
The timing question nobody gives you a number for
Owners ask whether they should wait for year end. Usually the answer is no.
Waiting sounds tidy because the accounts form a natural full stop. The trouble is that a year end is a bad moment to introduce a new firm to a business it has never seen. The records arrive at their most historic, the deadlines are closest, and there is no room to fix anything before it has to be filed.
Moving mid-year is calmer. Nothing is due immediately, so the first weeks go on understanding how the business actually runs: bank statements, the sales ledger, payroll arrangements, who owes you and who you owe. By the time year end comes round, it is a confirmation of records we already know rather than an investigation.
There is one exception worth naming. If your current accountant is already deep into the year-end file and close to filing, let them finish it. Move immediately after, while the figures are fresh and before another twelve months of drift starts.
The only genuinely bad timing is the one where you keep deferring until next year, every year.
What the first ninety days are supposed to produce
A switch is only worth making if something changes at the end of it. Ours is structured to a defined ninety-day onboarding.
Month one is foundations. Bookkeeping brought complete and accurate, banks reconciled, supplier and customer balances made to make sense, and any historic gaps flagged rather than buried. We also agree who is responsible for each part of the finance process and how information moves between you and us.
Month two is routine. Regular rhythms for bookkeeping, supplier bills, credit control, payroll and reporting, with checks in place and duplicated manual work removed where that is practical.
Month three is the point of the exercise. The finance function runs to an agreed timetable, you can see cash, debtors, creditors and performance, and management information arrives on the same date each month while you can still act on what it says.
That is the standard to hold any new accountant to, including us. Not whether the transfer was painless, but whether, ninety days later, you can answer a question about your own business without waiting for someone to get back to you.
What a clean-up tends to turn up
Rebuilding records is where the useful surprises live, because it is the first time in a while that anyone has checked one thing against another.
Reconciling a sales ledger against delivery records during a first bookkeeping clean-up, we found twenty thousand pounds of goods supplied and never invoiced. The invoices were raised and collected, and invoicing moved into the month-end routine so the same gap could not open again.
I am not suggesting every business has that sitting in it. Most don’t. But the habit of asking why something is done a particular way tends to earn its keep, and you only get to ask it when someone is actually inside the records rather than reviewing a file once a year.
It is also the reason I cap new clients at four a month. You cannot notice an anomaly in a business you have only skimmed. That cap is a constraint on us as much as a promise to you, and it means the review conversation is genuinely about whether the fit works both ways.
Common questions
Do I have to tell my current accountant myself?
You send one short note confirming you are moving. An email is normally enough unless your engagement letter asks for a letter. After that we handle professional clearance, the records request and the follow-up. You do not need to give a reason, and you do not need to sit between the two firms relaying messages.
What happens if my old accountant is slow to hand things over?
It happens, and we plan for it. We chase in writing, and where records are slow we work from source: bank statements, the accounting file, payroll data and filed returns. That means we can start building clean records without waiting on a working-papers file that may never fully arrive. You are kept informed rather than caught in the middle.
Will switching mid-year cause problems with VAT or payroll?
Only if nobody sequences it. VAT quarters and payroll dates are mapped at the start, and agent authorisations are put in place so the responsible party is clear on every deadline. Where a return falls during the transfer, we agree in advance who is filing it and confirm it in writing before the date.
Does the handover cost anything on top of the monthly fee?
No. The normal handover from an existing accountant or bookkeeper is managed by Ardein at no separate charge. That covers the handover plan, records collection, coordination with your current provider, the responsibility map and the first ninety-day plan. Ongoing work is a monthly fee scoped after we have seen the records.
What if my accountant’s address is my registered office?
Sort that before you end the engagement. Find an alternative address and update it with Companies House, so statutory post has somewhere to go. It is a small administrative step that causes real trouble if it is left until after the relationship has ended. We flag it during the handover plan so it does not get missed.
Where we stand
When you are switching accountants, the disruption you are picturing comes from handovers nobody manages. Sequence the authorisations, collect the records properly, agree who does what, and the transfer is mostly invisible to the running of the business.
The decision worth weighing is the other one. If you cannot currently answer a question about cash, margin or whether you can afford the next hire without waiting weeks, that is what you are choosing to keep.
If that sounds close to your position, the qualification review is the place to start. It takes a few minutes and tells you whether the fit works before either of us spends longer on it.