Do I need an accountant for my limited company?

You do not legally need an accountant to run a limited company. You can prepare accounts, keep records, calculate Corporation Tax and file returns yourself if you have the knowledge, software and time to do it properly.

However, a limited company has more formal responsibilities than a sole trader business. GOV.UK’s guide to running a limited company explains that directors must keep company records, prepare annual accounts, complete Company Tax Returns, file accounts and pay Corporation Tax.

The key point is that using an accountant does not remove the director’s responsibility. GOV.UK says you can hire an accountant to manage some things day to day, but you are still legally responsible for your company’s records, accounts and performance.

Merranti’s guide on how to file your limited company accounts and tax returns is a useful starting point because it explains the difference between Companies House filings, HMRC filings and Corporation Tax payment deadlines.

What does a limited company need to file?

A private limited company usually needs to prepare statutory annual accounts and a Company Tax Return after the end of its financial year. GOV.UK explains this in accounts and tax returns for private limited companies.

The main deadlines are usually:

• annual accounts to Companies House: 9 months after the company financial year ends
• Corporation Tax payment: 9 months and 1 day after the accounting period ends
• Company Tax Return: 12 months after the accounting period ends

A new company can be more complicated because the first accounts may cover more than 12 months, while a Corporation Tax accounting period cannot be longer than 12 months. GOV.UK explains this in your limited company’s first accounts and Company Tax Return.

This is one reason many new directors use an accountant from the start. The first year can create two Corporation Tax returns, two payment dates and a mismatch between Companies House and HMRC periods.

What records must directors keep?

Limited companies must keep company records and accounting records. GOV.UK’s guide to company and accounting records says company records include details about shareholders, votes, resolutions, loans, mortgages, and people with significant control.

Accounting records should include money received and spent, assets, debts, stock, goods bought and sold, invoices, contracts, bank statements and other documents needed to prepare accounts and the Company Tax Return.

Merranti’s guide on how long to keep accounting records in the UK is useful for directors who are unsure how long records need to be kept and what evidence should be retained.

Merranti’s article on the tax risks of mixing personal and business money is also relevant because limited company money must be kept separate from personal money.

Why Corporation Tax is not just a simple percentage

Corporation Tax is one area where directors often underestimate the complexity.

GOV.UK’s Company Tax Returns guidance explains that when a company files its tax return, it works out its profit or loss for Corporation Tax, which is different from the profit or loss shown in the annual accounts.

That difference matters. Accounting profit may need to be adjusted for disallowed expenses, capital allowances, depreciation, entertaining, director costs, losses and timing differences.

Merranti’s Corporation Tax explained guide explains why Corporation Tax is based on taxable profit, not cash in the bank. Merranti’s guide on how Corporation Tax is calculated for small companies goes further into the difference between accounting profit and taxable profit.

Companies with profits around the marginal relief band may need extra care. Merranti’s article on Corporation Tax marginal relief explains how the rate can change between the small profits rate and main rate, while Merranti’s guide to associated companies and Corporation Tax explains why multiple companies under common control can affect the thresholds.

Can software replace an accountant?

Software can help, but it does not replace judgement.

Bookkeeping software can record sales, costs, bank transactions, VAT, payroll and reports. But software will not always know whether a cost is allowable, whether a dividend is legal, whether a director’s loan account is overdrawn, whether VAT has been treated correctly, or whether Corporation Tax adjustments are needed.

GOV.UK’s guide to filing accounts and Company Tax Returns explains that companies need software to file Company Tax Returns with HMRC. It also says you can appoint an agent to file the Company Tax Return.

Merranti’s business expense guide is useful here because software can record a cost, but it cannot always decide whether that cost is genuinely deductible for tax.

Dividends and director withdrawals

One of the biggest reasons directors need support is how they take money from the company.

A director might take salary, dividends, expenses, benefits or director’s loans. GOV.UK explains the options in taking money out of a limited company.

Merranti’s how to pay yourself from your company guide is a useful starting point, while Merranti’s director remuneration guide explains how salary, dividends, National Insurance and Corporation Tax interact.

Dividends need particular care. Merranti’s guide to properly documenting dividends explains why board minutes, dividend vouchers and retained profits matter. Merranti’s article on illegal dividends explains why having cash in the bank does not automatically mean the company has distributable profits.

Director’s loan accounts

If a director takes money from the company and it is not salary, dividend, expense reimbursement or repayment of money previously lent to the company, it may become a director’s loan.

GOV.UK explains the basic position in director’s loans. Director’s loan accounts can become a problem if they are not monitored throughout the year.

Merranti’s Section 455 director loan account guide explains why overdrawn director loan accounts can create unexpected Corporation Tax charges. Merranti’s article on loans to participators and the Section 455 charge is also useful for directors and shareholders who use company funds informally.

This is a common example of where an accountant does more than file accounts. The value is often spotting the issue before it becomes expensive.

VAT, payroll and benefits

A limited company may also need support with VAT, payroll and benefits.

GOV.UK explains when businesses must register for VAT in when to register for VAT. Merranti’s VAT registration guide explains the rolling threshold and why growing businesses often miss it.

If the company pays directors or staff, PAYE may be needed. GOV.UK’s PAYE for employers guide explains employer payroll duties. Merranti’s PAYE and director salaries guide explains why director payroll needs planning, especially where salary is combined with dividends.

Benefits can add another layer. Merranti’s benefits-in-kind guide explains how company cars, private medical cover and other perks can create reporting and tax charges. Merranti’s guide to mandatory payrolling of benefits from April 2026 is also relevant for employers preparing for changes.

When you may not need much accountancy support

Some companies are simple enough that a director may handle parts of the process themselves, especially where the company is dormant or has very few transactions.

However, even simple companies still need to understand filing deadlines, confirmation statements, records, accounts, Corporation Tax notices and Companies House requirements.

GOV.UK’s being a company director guidance explains that directors are legally responsible for making sure information is sent to Companies House on time, including annual accounts and confirmation statements.

If the company is genuinely dormant, the reporting may be simpler. But dormant does not mean “ignore the company”. Accounts and confirmation statements may still be required.

When an accountant becomes more valuable

An accountant becomes more valuable where the company has:

• regular trading activity
• VAT registration
• payroll
• employees
• company vehicles
• benefits in kind
• dividends
• director’s loans
• multiple shareholders
• associated companies
• stock or work in progress
• poor bookkeeping
• profits near Corporation Tax thresholds
• plans to raise finance or sell the business

Merranti’s limited company vs sole trader guide is useful if you are still deciding whether a company structure is worth the extra admin. Merranti’s business registration guide is also relevant for new business owners checking which HMRC registrations apply.

Speak to Merranti before the deadline

You do not legally need an accountant for a limited company. But you do need accurate records, correctly prepared accounts, a Corporation Tax calculation, timely filings, and clear treatment of salary, dividends, VAT, payroll, expenses and director withdrawals.

Merranti’s limited company accounts filing guide, Corporation Tax guide, director remuneration guide, dividend documentation guide, VAT registration guide and PAYE guide for directors cover the main connected issues.

If you are unsure whether your limited company accounts, tax return or bookkeeping are being handled correctly, contact Merranti Accounting before your next Companies House or HMRC deadline.

Do I legally need an accountant for my limited company?
No. GOV.UK says you can get an accountant to prepare and file your Company Tax Return, or you can do it yourself. But directors remain legally responsible for company records, accounts and performance. GOV.UK explains this in running a limited company: directors’ responsibilities.

What must a limited company file each year?
A private limited company usually needs to prepare statutory annual accounts and a Company Tax Return. GOV.UK explains the requirements in accounts and tax returns for private limited companies.

Can I file my own Company Tax Return?
Yes, but Company Tax Returns usually need commercial software, and Corporation Tax profit is not always the same as accounting profit. GOV.UK explains the process in Company Tax Returns, while Merranti’s Corporation Tax explained guide explains the practical tax issues.

What happens if I miss a Companies House deadline?
Late filing can lead to penalties. GOV.UK explains the filing deadlines in its limited company accounts and tax returns guidance, and Merranti’s limited company filing guide explains how Companies House and HMRC deadlines differ.

When is an accountant most useful?
An accountant is most useful where the company has VAT, payroll, dividends, director’s loans, employees, vehicles, multiple shareholders, associated companies, poor bookkeeping or profits near Corporation Tax thresholds.