Cost of an Accountant for Small Business: 2026 UK Price Guide

Ask three small business owners what they pay their accountant and you’ll likely get three completely different numbers. That’s not because accountants are inconsistent — it’s because the fee tracks something specific: how your business is structured, how much financial activity flows through it each month, and how tidy your records are by the time an accountant sees them. This guide walks through what small businesses in the UK actually pay in 2026, the handful of factors that swing the price, and a practical method for telling a genuinely fair quote from an inflated one.

Quick Answer

UK small businesses generally spend somewhere between £150 and £2,500 a year on an accountant, and the gap comes down almost entirely to structure and complexity. A sole trader with a straightforward Self Assessment sits at the lower end — usually £150 to £600 a year. A small limited company sits higher, typically £750 to £2,500 annually once you factor in statutory accounts, Corporation Tax, and routine advice. VAT registration and payroll each push the number up further: expect roughly a 30–50% jump once VAT enters the picture, and £30–£80 per employee each month once you’re running payroll. What matters more than your accountant’s postcode is simply how much work your books genuinely create.

Key Takeaways

• Sole traders generally land in the £150–£600 a year bracket for Self Assessment plus light bookkeeping.
• Small limited companies typically fall between £750 and £2,500 a year (roughly £75–£250 monthly) for accounts, Corporation Tax, and ongoing support.
• Becoming VAT-registered adds around 30–50% to the annual bill, thanks to the extra quarterly filing workload.
• Payroll costs roughly £30–£80 per employee monthly once you’re processing wages through PAYE.
• Filing late isn’t cheap — Companies House penalties run from £150 to £1,500 depending on how overdue accounts are, and the charge doubles for a second consecutive late filing.
• Fixed annual or monthly pricing has largely replaced hourly billing (which still runs £60–£150 an hour where it’s used) as the standard way small business accounting is sold.

Table of Contents

1. Quick Answer
2. Key Takeaways
3. Why Business Structure Changes the Price So Much
4. What Different Business Types Actually Pay
5. The Factors That Push Your Quote Up or Down
6. Watching a Business Grow: A Real-World Cost Progression
7. What It Costs When Filing Goes Wrong
8. Is Doing It Yourself Actually Cheaper?
9. Rule Changes That Could Reshape Future Pricing
10. A Better Way to Compare Accountant Quotes
11. Where Business Owners Go Wrong
12. What We Notice Working With Small Businesses
13. Deciding Whether You Need One
14. Checklists
15. FAQs
16. Sources
17. Final Thoughts

Why Business Structure Changes the Price So Much

Before comparing numbers, it helps to understand why they differ so widely in the first place — and the answer is almost always structure. Trade as a sole trader and HMRC asks for exactly one thing from you each year: a Self Assessment return. Incorporate as a limited company, though, and the obligations multiply — full statutory accounts for Companies House, a separate Company Tax Return for HMRC, an annual confirmation statement, and the director’s own personal tax return sitting alongside all of it. Every extra filing is extra time on your accountant’s desk, and that time is exactly what you’re paying for.

What Different Business Types Actually Pay

These numbers reflect the accountancy work itself — they don’t include the separate, fixed statutory costs owed to Companies House and HMRC regardless of who prepares your figures, or any penalty that follows a missed deadline. Both are covered further down.

The Factors That Push Your Quote Up or Down

It’s common for two businesses of near-identical size to receive noticeably different quotes for what looks like the same job. Usually, one of these five things explains the gap.

How many transactions flow through each month. Thirty bank transactions take far less time to reconcile than three hundred. Since most accountants price around the hours a job takes, higher activity naturally costs more.

Whether you’re VAT-registered. Registration brings quarterly returns under Making Tax Digital, filed through approved software — a recurring obligation on top of the year-end work, which is why it typically adds 30–50% to the overall bill.

Whether you run payroll. Paying staff, or drawing your own salary through PAYE, brings monthly processing, RTI submissions to HMRC, and year-end reporting into the mix — generally £30–£80 per employee each month.

How organised your records are. Records arriving as a pile of unsorted receipts and an unreconciled bank feed cost more to work with than tidy digital bookkeeping — software like Xero, QuickBooks, or FreeAgent, kept current through the year, keeps the accountant’s time (and your bill) down.

What sector you’re in, and how many income streams you run. Construction and CIS, property, and cross-border trade all carry more complex VAT and reporting treatment, and businesses selling across several platforms or currencies typically cost more to account for than a single-income service business.

Watching a Business Grow: A Real-World Cost Progression

Illustrative Example: Picture a sole trader running a marketing consultancy on the side of a day job. In their first year, turnover sits around £18,000, transactions stay under 20 a month, and there’s no VAT or payroll to think about. A Self Assessment return with a bit of bookkeeping support typically runs £250–£350 for that year.

Illustrative Example: Fast forward to year three. The same person is now full-time, turnover has climbed to £95,000, they’ve crossed the VAT threshold, and they’ve incorporated — taking a modest PAYE salary topped up with dividends. The annual accountancy bill has grown to somewhere around £1,800–£2,400, now covering statutory accounts, the CT600, quarterly VAT returns, and payroll all at once. Nothing about that jump is unreasonable — it mirrors real added complexity (incorporation, VAT, payroll) rather than the same work simply costing more. If your own fee climbs without anything in your circumstances actually changing, that’s a fair thing to raise with your accountant.

What It Costs When Filing Goes Wrong

Knowing the accountant’s fee is only half the budgeting picture — it’s worth understanding what missed deadlines actually cost, since avoiding exactly this is a large part of what you’re paying for.

HMRC runs a separate escalating structure for a late Company Tax Return: £200 the moment the deadline passes, another £200 if it’s still outstanding three months on, then an estimated bill plus a 10% penalty on unpaid tax at six months, and a further 10% at the year mark. Sole traders filing Self Assessment face their own version — an automatic £100 charge from day one, daily £10 penalties kicking in after three months (capping at £900), with further charges layered on at six and twelve months.

None of this is unavoidable — it’s simply the cost of a deadline slipping. That’s a large part of why paying a fair, sustainable rate for a reliable accountant tends to work out cheaper than chasing the lowest quote and risking a missed filing.

Is Doing It Yourself Actually Cheaper?

Plenty of business owners weigh up handling their own accounts, particularly early on when things are still simple. It’s a fair instinct — Companies House lets you file micro-entity accounts for free, and sole-trader-focused accounting software often starts around £15–£30 a month, which looks dramatically cheaper than an accountant’s fee on paper.

What that comparison leaves out is your own time, and the cost of getting something wrong — an expense filed in the wrong category, a relief you didn’t know to claim, or a Company Tax Return that miscalculates taxable profit (a genuinely different figure from accounting profit, and a common point of confusion). An incorrect CT600 doesn’t just cost you the relief you missed; it can trigger an HMRC enquiry, and resolving that eats far more time and stress than the accountant’s fee ever would have. For most small businesses, the realistic choice isn’t “DIY versus an accountant” so much as “software on its own versus software plus someone who reviews and files it properly” — and many accountants fold the software cost into their fixed fee anyway, so it’s less of an added expense than it first appears.

Rule Changes That Could Reshape Future Pricing

Companies House is in the middle of a substantial shake-up of how small companies and micro-entities file, driven by the Economic Crime and Corporate Transparency Act 2023. The direction of travel: abridged accounts are being phased out, and eventually every company — micro-entities included, currently exempt — will need to file a profit and loss account alongside the balance sheet. Filing itself is also moving toward software-only, with the paper and web-based routes being withdrawn over time, though businesses are being promised 21 months’ notice before any specific change takes effect.

Once profit and loss figures become public for every company and free web-based filing disappears, some of today’s cheapest DIY routes will simply stop existing — likely narrowing the current gap between filing it yourself and paying an accountant.

A Better Way to Compare Accountant Quotes

Because prices for “cost of accountant for small business” vary this widely, comparing quotes fairly means asking every firm the same set of questions rather than just eyeballing the bottom line. Does the quote cover both statutory accounts and the Company Tax Return, or just one? Is bookkeeping software bundled in, and which package? Is the fee genuinely fixed, or does it shift with hours worked — because hourly billing is notoriously hard to budget around. What happens if HMRC opens a query: included, or an extra charge? And is the odd quick question — about a purchase, a dividend, anything small — covered, or billed separately? A fee that’s a little higher but genuinely covers all of this usually beats a cheaper headline number riddled with add-ons.

Where Business Owners Go Wrong

1. Comparing headline numbers without checking what’s actually included
Why it happens: The lowest figure is the easiest thing to spot when scanning several quotes.
Consequence: A cheap-looking quote that leaves out the CT600, HMRC correspondence, or basic advice can end up costing more once those get added back in.
How to avoid it: Ask exactly what’s covered before you put two quotes side by side.

2. Incorporating before checking whether it’s actually worth the extra cost
Why it happens: Becoming a limited company is often treated as the obvious next step, regardless of income level.
Consequence: Taking on higher accountancy fees and heavier filing obligations before the tax advantage genuinely outweighs them.
How to avoid it: Compare the sole trader and limited company position properly, at your actual income, before switching.

3. Letting bookkeeping build up instead of staying on top of it
Why it happens: It’s easy to deprioritise against the day-to-day running of the business.
Consequence: A backlog takes an accountant longer — and costs more — to untangle than records kept current throughout the year.
How to avoid it: Reconcile monthly, even briefly, rather than dumping twelve months of transactions on your accountant at once.

4. Not budgeting ahead for VAT or payroll costs
Why it happens: These costs are invisible until the moment your business actually crosses the relevant threshold.
Consequence: A sudden 30–50% fee increase landing exactly when growth has already stretched your cash flow.
How to avoid it: Ask your accountant now what your fee would look like at the next stage of growth, before you get there.

5. Assuming cheapest automatically means best value
Why it happens: Price is the one thing that’s instantly comparable across quotes.
Consequence: A rock-bottom fee sometimes means thinner support, slower responses, or a less thorough review that misses genuine reliefs.
How to avoid it: Weigh the fee against what a proper review might uncover in missed deductions, not just against the number itself.

What We Notice Working With Small Businesses

• The step up from sole trader to limited company pricing genuinely surprises a lot of people — it’s rarely spelled out clearly at the point incorporation is being weighed up.
• Clients who keep clean, current digital records pay noticeably less overall than those who arrive with a backlog, simply because less time goes into sorting before the real work starts.
• VAT registration is the single biggest fee jump most small businesses experience — and it’s almost never budgeted for ahead of time.
• Fixed fees agreed upfront lead to far fewer disagreements than hourly billing, especially for routine compliance work.
• Business owners who ask what’s included before comparing prices tend to end up with noticeably better decisions than those comparing headline figures alone.

Deciding Whether You Need One

Step 1: Pin down your actual filing obligations. Sole trader and limited company requirements genuinely differ, and that shapes the realistic price range you should expect.

Step 2: Get quotes covering identical scope. Compare like for like — statutory accounts and the CT600 together, not one quote covering both and another covering just one.

Step 3: Weigh the fee against your own time and risk. Missed reliefs and DIY mistakes routinely cost more than the accountant’s fee would have.

Step 4: Think ahead to your next stage of growth. Ask what the fee looks like once VAT or payroll becomes part of the picture.

Checklists

Checklist 1: Before You Start Requesting Quotes

• ✓ Confirm whether you’re a sole trader or limited company
• ✓ Estimate roughly how many transactions you process monthly
• ✓ Note whether you’re VAT-registered, or getting close to the threshold
• ✓ Note whether you employ staff, or plan to soon

Checklist 2: While Comparing Quotes

• ✓ Confirm precisely what the headline fee includes
• ✓ Ask whether bookkeeping software comes bundled in
• ✓ Check whether pricing is fixed or hourly
• ✓ Ask what happens if HMRC raises a query
• ✓ Confirm they’re authorised to act as your HMRC agent

FAQs

How much does an accountant cost for a small business in the UK?
Most small businesses spend £150–£2,500 a year, with the figure driven mainly by structure — sole traders usually sit at £150–£600, small limited companies at £750–£2,500.

How much does a sole trader accountant cost?
Generally £150–£600 a year, covering Self Assessment and light bookkeeping support, depending on how complex your income is.

How much does a limited company accountant cost?
Typically £750–£2,500 a year, often quoted as £75–£250 monthly, covering statutory accounts, Corporation Tax, and ongoing access to advice.

Does becoming VAT-registered push accountancy fees up?
Yes, usually by around 30–50%, since it introduces a recurring quarterly filing obligation under Making Tax Digital that didn’t exist before.

How much extra does payroll cost?
Roughly £30–£80 per employee each month, covering monthly processing, RTI submissions to HMRC, and the year-end reporting that comes with it.

What happens if I miss a filing deadline?
Companies House penalties for late accounts escalate from £150 to £1,500 depending on how overdue they are, doubling for a second consecutive late year; HMRC applies separate penalties for a late Company Tax Return or Self Assessment return.

Can I just do my own small business accounts and skip the fee?
You can, but the real cost shifts to your own time and the risk of errors — a missed relief or a miscalculated CT600 can trigger an HMRC enquiry that ends up costing more than an accountant’s fee would have.

Is fixed-fee pricing better than paying by the hour?
For most small businesses, yes — a fixed fee agreed in advance removes the risk of an unpredictable bill and makes budgeting genuinely straightforward.

What should I check before choosing an accountant?
Pin down exactly what’s covered by the fee, whether software is included, whether HMRC queries are handled within it, and confirm they’re properly qualified and authorised to deal with HMRC on your behalf.

Will upcoming Companies House changes affect what accountants charge?
Possibly, over time — once public profit and loss filing and software-only submission become mandatory, some of today’s free DIY filing routes are likely to disappear.

Sources

• GOV.UK — Accounts and tax returns for private limited companies
• GOV.UK — Penalties for late filing of company accounts
• GOV.UK — Company Tax Returns: penalties for late filing
• GOV.UK — Self Assessment tax return penalties
• GOV.UK — Economic Crime and Corporate Transparency Act: Companies House transition plan

Fee ranges reflect general UK market pricing at the time of writing and vary between providers — always get a current, written quote before committing, and check current penalty figures on GOV.UK.

Final Thoughts

What an accountant costs a small business comes down to genuine complexity far more than which firm happens to look cheapest at first glance — structure, VAT status, payroll, and how tidy your records are all matter more than the headline number. Comparing quotes on equal terms, understanding what a missed deadline actually costs, and thinking a step ahead to your next stage of growth will serve you better than chasing the lowest price you can find.

If you’re not sure what your own business would realistically cost, a clear, written quote based on your actual situation is the quickest way to find out — and to see whether the fee pays for itself in time saved and reliefs properly claimed.

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