Is it a legal requirement to have an accountant for a small business?

No. UK sole traders and limited company directors can legally file their own returns. HMRC and Companies House only require the filings to be accurate and on time. Most small businesses use an accountant because doing it themselves is where mistakes and penalties creep in.

At what point should a small business hire an accountant?

As soon as you register a limited company, approach the £90,000 VAT threshold, hire your first employee, or start finding Self Assessment stressful. Bringing an accountant in early is cheaper than untangling problems later.

Can I run a limited company without an accountant?

Technically yes. In practice, statutory accounts, corporation tax, confirmation statements and director Self Assessment all have to be filed correctly and on time. Missing any of them triggers automatic penalties, so almost every limited company uses an accountant.

What does a small business accountant actually save you?

Three things: tax through better structuring of salary, dividends and allowances; penalties through on-time filings; and hours of your own time. For a typical UK small company, the savings comfortably cover the £1,200 to £3,000 annual fee.

Can I use software like Xero instead of an accountant?

Software records the transactions but doesn't file statutory accounts, prepare a corporation tax return, or spot tax planning opportunities. Most small businesses use both: software for day-to-day records, and an accountant for the returns and advice.

Do I need an accountant for my small business?

Short answer: legally, most UK small businesses don't have to appoint an accountant. Practically, almost all of them should. Below is when it genuinely pays off, when it doesn't, and what to look for if you decide to bring one in.

Is an accountant legally required?

No. HMRC and Companies House don't require you to use an accountant. A sole trader can file their own Self Assessment. A limited company director can file their own statutory accounts and corporation tax return.

What HMRC does require is that the filings are accurate, on time, and backed up by proper records. That's where owners without an accountant tend to come unstuck.

When you probably don't need one yet

You're a side-hustle sole trader earning under £1,000 (the trading allowance covers you and no return is needed).
You're a straightforward sole trader with one income stream, few expenses and confidence filling in a Self Assessment.
You're pre-trading and just want to understand the structure before you start.

In these cases a one-off call with an accountant is often enough.

When you almost certainly do need one

Bring in an accountant as soon as any of these are true:

You've registered a limited company. Statutory accounts, corporation tax, confirmation statement and director Self Assessment all kick in. Missed filings carry penalties from £150 to £1,500 per event.
Turnover is approaching £90,000. That's the VAT threshold. You want an accountant in place before you have to register, not after.
You've hired your first employee. Payroll, PAYE, National Insurance and pension auto-enrolment all start.
You're taking money out of a limited company. Salary vs dividend, director's loan, benefits in kind: getting this wrong is expensive.
You dread Self Assessment. If tax season causes stress, that's exactly the problem a good accountant removes.
You're applying for a mortgage, loan or investment. Lenders want SA302s, tax overviews and clean accounts.

What a good accountant actually does for a small business

Beyond filing returns, a modern small business accountant will:

Keep bookkeeping clean throughout the year so nothing is a rush at year-end.
File VAT, corporation tax, Self Assessment and statutory accounts on time.
Set up how you draw money from the business tax efficiently.
Produce simple management accounts so you can see profit and cash monthly, not annually.
Be reachable when you need a quick answer before making a decision.

The value isn't the tax return. It's having someone who joins up the moving parts so you're never guessing.

What it actually costs

Most UK small firms are on a fixed monthly fee. Rough guide:

Sole trader: £30 to £60 a month.
Limited company (early stage): £100 to £250 a month for accounts, tax and support.
Growing company: £300+ a month bundling bookkeeping, VAT and payroll.

For a typical limited company that's £1,200 to £3,000 a year. In our experience, tax savings, avoided penalties and reclaimed time cover the fee comfortably. There's a fuller breakdown in how much an accountant costs for a small business.

What to look for

Chartered or certified through ACCA, ICAEW or CIMA.
Fixed monthly fee, not hourly billing. You want to know the year's cost upfront.
Cloud-first. Fluent in Xero, QuickBooks or FreeAgent, and Making Tax Digital ready.
Responsive. Ask how quickly they typically reply to an email.
One roof. Bookkeeping, VAT and payroll all under one firm, not stitched across three suppliers.

The honest answer

If you're a limited company, employ anyone, or you're anywhere near the VAT threshold, yes: get an accountant. It's cheaper than the mistakes. If you're a very simple sole trader and confident with a Self Assessment, you can do it yourself, but even then a 30-minute check-in with an accountant once a year usually pays for itself.

If you'd like a straight-talking view on what your business actually needs, have a chat with us. No sales pitch, just an honest steer.