Do Limited Companies Need an Accountant? The Real UK Rules Explained

Set up a limited company and one of the first questions that comes up is whether you’re legally obliged to hire an accountant, or whether you can simply handle the paperwork yourself. It’s a fair question — accountancy fees add up, and plenty of directors would rather keep costs down, especially in the first year of trading. The honest answer sits somewhere between the two extremes people usually expect.

This guide sets out exactly what the law does and doesn’t require, what a limited company must file regardless of whether an accountant is involved, and why so many directors end up hiring one anyway even though nothing forces them to. It’s written from the perspective of an accountant who deals with exactly this question from new directors on a regular basis.

Quick Answer

No, UK law does not require a limited company to hire an accountant. Companies Act 2006 places the legal responsibility for accurate filing squarely on the company’s directors, not on any third-party professional — the one narrow exception is a statutory audit, and most small companies are exempt from that entirely. In practice, though, the majority of limited companies choose to use an accountant anyway, because the filing obligations are genuinely complex, the penalties for getting them wrong are real, and a competent accountant frequently saves more in tax than they charge in fees.

Key Takeaways

• There is no legal requirement to hire an accountant for a UK limited company — directors can prepare and file everything themselves.
• The only situation requiring a qualified third party is a statutory audit, and most small companies qualify for audit exemption.
• Regardless of who prepares them, every limited company must still file annual accounts, a Corporation Tax return, and a confirmation statement — none of that goes away without an accountant.
• Around 91% of small UK businesses use an external accountant, according to ICAEW figures.
• Typical accountant fees for a small limited company run roughly £60–£150 a month, often covering year-end accounts, the CT600, the confirmation statement, and the director’s Self Assessment.
• Directors remain personally responsible for filing accuracy and deadlines even if they never touch the paperwork themselves and rely entirely on software.

Table of Contents

1. Is It Actually a Legal Requirement?
2. What Your Company Must File Regardless
3. Audit Exemption: The One Real Exception
4. What Happens If You Get It Wrong
5. What an Accountant Actually Saves You
6. Can You Genuinely Do It Yourself?
7. How Much Does a Limited Company Accountant Cost?
8. Advice for London-Based Limited Companies
9. Common Mistakes People Make
10. Accountant Insights: What We See in Practice
11. Should You Hire an Accountant? (Decision Framework)
12. DIY vs Hybrid vs Full-Service Accountant (Comparison)
13. Checklists
14. FAQs
15. Sources
16. Final Thoughts

Is It Actually a Legal Requirement?

Company law in the UK is governed by the Companies Act 2006, and nowhere in it is a limited company required to appoint an accountant. Companies House and HMRC don’t ask who prepared your figures — they simply expect the figures to be accurate, complete, and filed on time. As a director, you’re free to handle every part of this yourself, provided you’re confident doing so correctly.

That said, “legally allowed to do it yourself” and “genuinely sensible to do it yourself” aren’t always the same thing, which is really what this decision comes down to for most directors.

What Your Company Must File Regardless

Whether or not an accountant is involved, a limited company carries the same set of statutory obligations. These don’t disappear by going it alone — they simply become entirely your responsibility to get right:

• Annual accounts filed with Companies House, prepared to UK GAAP standards.
• A Company Tax Return (CT600) submitted to HMRC, declaring taxable profit and calculating Corporation Tax owed.
• A confirmation statement, updating Companies House on your company’s basic details each year.
• VAT returns, if your company is VAT-registered — typically quarterly.
• PAYE reporting, if the company has any employees, including the director drawing a salary.

Missing any of these, or getting the figures wrong, is treated the same way by HMRC and Companies House whether a professional was involved or not — the responsibility sits with the director, not with whoever (if anyone) prepared the paperwork.

Audit Exemption: The One Real Exception

The single situation where a limited company genuinely needs a qualified professional by law is a statutory audit — and this is the one area where “no accountant needed” isn’t quite the full picture. Most small companies, however, qualify for audit exemption and never need to worry about this at all.

To qualify as exempt, a company typically needs to meet at least two of the following three thresholds: turnover under the small-company limit, a balance-sheet total under the small-company limit, and 50 or fewer employees. If your company comfortably sits within these limits — which the vast majority of small and micro businesses do — an audit simply isn’t part of your obligations, accountant or not.

What Happens If You Get It Wrong

Filing obligations don’t become optional just because you’re managing them yourself. Late or incorrect filings carry real consequences:

• Companies House late filing penalties apply automatically and increase the longer accounts remain outstanding — they can escalate quickly for a small company that files even a few months late.
• HMRC penalties for a late or incorrect Company Tax Return apply separately from Companies House penalties, meaning a single missed deadline across both bodies can generate two sets of charges.
• Persistent late filing can affect your company’s credit rating, and in serious cases, HMRC or Companies House can pursue director disqualification.
• Errors in Corporation Tax calculations can lead to either an unexpected tax bill later, or — just as commonly — overpaying tax simply because a relief or allowance wasn’t correctly applied.

None of this requires deliberate wrongdoing — most penalty cases stem from directors who were confident they understood the requirements, only to discover a detail (a deadline, a relief, a formatting requirement) they’d missed.

What an Accountant Actually Saves You

The value of hiring an accountant rarely shows up as “compliance” alone — it tends to show up in two more concrete places: time and tax.

Time: Between annual accounts, a CT600, a confirmation statement, VAT (if registered), and payroll, a limited company’s admin load is genuinely heavier than a sole trader’s. An accountant absorbs that workload, freeing up hours that would otherwise go into learning UK GAAP formatting rules or double-checking a CT600 calculation.

Tax: A competent accountant routinely identifies allowable expenses, capital allowances, or director’s remuneration structures (such as an efficient salary-versus-dividend split) that a director working alone might not know to apply. In many cases, the tax saved genuinely exceeds the accountant’s fee over the course of a year.

Accountant Insight: The directors who regret going it alone rarely regret the accounts themselves — they regret the tax planning they missed. A basic CT600 can usually be filed correctly with enough care; a properly optimised salary-dividend structure or capital allowance claim is much harder to get right without specialist knowledge.

Can You Genuinely Do It Yourself?

Yes, for some companies this is entirely realistic. DIY tends to work reasonably well when:

• The company is genuinely simple — a single director, straightforward income, no VAT registration, no employees.
• You’re comfortable with UK GAAP formatting requirements for statutory accounts.
• You’re confident tracking multiple deadlines across Companies House and HMRC without missing one.
• You don’t need advice on tax-efficient structuring, since that’s where most of an accountant’s ongoing value tends to sit.

Where DIY becomes genuinely risky is once a company takes on employees, registers for VAT, starts generating meaningful profit where tax planning matters, or the director simply doesn’t have the time to stay on top of the admin — at that point, the time and risk saved by an accountant usually outweighs the fee fairly quickly.

How Much Does a Limited Company Accountant Cost?

Pricing for a small UK limited company typically runs on a fixed monthly fee rather than a one-off charge, since the work spans the full year:

A typical fixed monthly fee usually bundles together year-end accounts, the CT600, the confirmation statement, and the director’s personal Self Assessment — worth confirming exactly what’s included before comparing quotes, since bundled and unbundled pricing can look very different at first glance.

Advice for London-Based Limited Companies

London has one of the highest concentrations of newly formed limited companies in the UK, spanning everything from single-director consultancies to fast-growing startups taking on their first employees. This pace of growth means many London directors cross a compliance threshold — VAT registration, PAYE for a first hire, or simply outgrowing “genuinely simple” — faster than they might in other parts of the country.

Because most limited company accounting is now handled remotely, London-based directors aren’t limited to paying London office-based rates; a fully qualified accountant serving clients UK-wide can typically deliver the same standard of compliance and tax planning without the premium sometimes attached to a Central London physical office. For a fast-scaling company, the more relevant question usually isn’t “do I need an accountant in London specifically,” but “has my company outgrown doing this alone” — a threshold London businesses tend to reach earlier than most simply due to the pace of growth involved.

Common Mistakes People Make

1. Assuming no legal requirement means no real risk
Why it happens: “Not legally required” is easy to misread as “not important.”
Consequence: Penalties for late or incorrect filing apply regardless of whether an accountant was involved.
How to avoid it: Treat the filing obligations as fixed and non-negotiable, whether or not you use an accountant to meet them.

2. Not realising Companies House and HMRC penalties are separate
Why it happens: Both relate to “annual filings,” so people assume one deadline covers everything.
Consequence: A missed deadline can trigger two sets of penalties from two different bodies at once.
How to avoid it: Track Companies House and HMRC deadlines separately, since they don’t always fall on the same date.

3. Filing accounts without understanding UK GAAP formatting requirements
Why it happens: Directors assume any reasonably accurate set of figures will be accepted.
Consequence: Accounts can be rejected or queried if they don’t follow the required statutory format, causing delays.
How to avoid it: Use compliant accounting software, or have an accountant review the format before filing, even if you prepared the figures yourself.

4. Missing tax-efficient structuring by managing everything alone
Why it happens: DIY filing tends to focus on getting the numbers submitted, not on whether the underlying structure is efficient.
Consequence: Overpaying tax through a suboptimal salary-dividend split or unclaimed allowances.
How to avoid it: Even a one-off consultation with an accountant on structuring can identify savings worth revisiting annually.

5. Waiting until close to the deadline to decide whether to hire an accountant
Why it happens: The question often only comes up once a deadline is already looming.
Consequence: Limited time to find a suitable accountant, and less opportunity for them to review the year properly before filing.
How to avoid it: Decide on your approach — DIY or accountant — well ahead of your company’s year-end.

Accountant Insights: What We See in Practice

• Most DIY-to-accountant switches happen after a first penalty, rather than before — directors often only realise the real complexity once something’s already gone wrong.
• Contractors and consultants are the group most likely to successfully manage simple companies alone, largely because their income structure tends to stay consistent year to year.
• Companies that take on their first employee are the most common trigger for hiring an accountant, since payroll compliance adds a level of ongoing complexity that’s harder to manage informally.
• Salary-dividend structuring is the single most commonly missed tax-saving opportunity among directors who file everything themselves.
• Bundled fixed-fee packages tend to represent better value than piecemeal pricing once a company needs more than just basic annual accounts.

Should You Hire an Accountant?

A quick way to decide:

Step 1: Assess genuine simplicity.
Single director, no VAT, no employees, stable income — DIY is realistic here.

Step 2: Check your confidence with deadlines and formatting.
If tracking multiple Companies House and HMRC deadlines feels risky, that alone often justifies the fee.

Step 3: Consider whether tax planning matters to you.
If your company generates meaningful profit, an accountant’s structuring advice is where most of the real value tends to sit.

Step 4: Factor in your own time.
Even confident DIY directors often find the ongoing admin more time-consuming than expected once the company grows.

DIY vs Hybrid vs Full-Service Accountant

Checklists

Checklist 1: Deciding Whether to Hire an Accountant

• ✓ List every filing obligation your company currently has (accounts, CT600, confirmation statement, VAT, PAYE)
• ✓ Assess how confident you are meeting each deadline without help
• ✓ Consider whether your salary-dividend structure has been reviewed for efficiency
• ✓ Weigh your own time against a typical monthly accountant fee
• ✓ Decide before your year-end approaches, not after

Checklist 2: If You Choose to DIY

• ✓ Use HMRC-recognised accounting software for compliant record-keeping
• ✓ Diarise Companies House and HMRC deadlines separately
• ✓ Review UK GAAP formatting requirements before submitting accounts
• ✓ Reassess your decision if you take on employees or register for VAT
• ✓ Consider at least an annual check-in with an accountant, even if filing yourself

FAQs

Do limited companies legally need an accountant in the UK?
No — there’s no legal requirement under the Companies Act 2006. Directors can prepare and file everything themselves, except in the rare case of a statutory audit.

What must a limited company file even without an accountant?
Annual accounts, a Company Tax Return (CT600), and a confirmation statement, plus VAT returns and PAYE reporting if applicable.

Do small companies need an audit?
Most don’t — companies meeting at least two of three thresholds (turnover, balance-sheet total, employee count) generally qualify for audit exemption.

What happens if I file my limited company accounts late?
Companies House applies automatic, escalating late filing penalties, and HMRC charges separate penalties for a late Company Tax Return.

How much does an accountant cost for a limited company?
Typically £60–£150 a month for a small company, depending on complexity, VAT registration, and whether payroll is involved.

Can I do my own limited company accounts?
Yes, particularly if your company is simple — single director, no VAT, no employees — though you’ll need to follow UK GAAP formatting requirements.

What’s the biggest risk of managing a limited company without an accountant?
Missed deadlines and penalties are the most visible risk, but missed tax-efficient structuring — like an optimal salary-dividend split — is often the more costly one long-term.

Does hiring an accountant remove all my responsibilities as a director?
No — directors remain legally responsible for accurate and timely filing, even when an accountant prepares the paperwork on their behalf.

Is it cheaper to use accounting software instead of an accountant?
Software reduces day-to-day admin but doesn’t replace the judgement needed for tax planning or complex filing requirements — many directors use a hybrid of both.

When should a director reconsider going it alone?
Common triggers include registering for VAT, hiring a first employee, or profits growing to a point where tax planning meaningfully affects the bottom line.

Sources

• GOV.UK — Companies House: annual accounts and confirmation statement
• GOV.UK — Corporation Tax: Company Tax Returns
• GOV.UK — Audit exemption for private limited companies
• ICAEW — Small business use of external accountants

Fee ranges, audit exemption thresholds, and penalty amounts are set by HMRC and Companies House and are periodically updated — always confirm current figures on GOV.UK before publication.

Final Thoughts

Legally, no limited company in the UK is required to hire an accountant — the responsibility for accurate, on-time filing rests with the director either way. What changes the calculation for most companies isn’t the law, but the practical reality: filing obligations are genuinely detailed, penalties for getting them wrong are real, and a good accountant frequently identifies tax savings that offset most or all of their fee.

If you’re weighing up whether your company is simple enough to manage alone, or has reached the point where professional help pays for itself, a conversation with a qualified accountant about your specific situation is the clearest way to find out.

Written by:
Shamayun Chowdhury
Senior Accountant, Major Accountancy
Lecturer in Accounting, Nottingham Trent University
CIMA Qualified, 15+ Years Experience
Last Reviewed: August 2026