Annual Accounts and Corporation Tax

Running a limited company means keeping your financial records accurate and up to date. Managing your annual accounts and corporation tax can feel like a chore, but these tasks are essential for keeping your business legal, compliant, and ready to grow.

What are annual accounts and corporation tax?

Annual accounts are a summary of your financial performance over a twelve month period. They show exactly what your business owns, what it owes, and how much profit or loss you made.

Corporation tax is the tax you pay on those business profits.

An accountant takes your raw bookkeeping data, extracts the numbers, and structures them into official financial statements. This process keeps you compliant with the government, but it also helps your business in other ways:

Clear visibility: You see exactly where your money goes and which areas of your business make the most profit.
Funding and growth: Banks, investors, and suppliers want to see accurate annual accounts before lending you money or offering credit terms.
Tax efficiency: An accountant looks for legal ways to reduce your tax bill, ensuring you do not pay more than required.

Annual Accounts and Corporation Tax FAQs

Does my limited company need to file accounts?

Yes. Every registered limited company in the UK must prepare and file annual accounts. This rule applies even if your company is small, made no profit, or did not trade at all during the year.

Why do we need to file accounts?

Filing accounts is a legal requirement to keep the public register updated. It ensures transparency for anyone doing business with you. The government uses these figures to check that your business pays the correct amount of tax.

How often do I need to file?

You must file your accounts once every year, based on your company financial year.

Companies House: For a standard financial year, you must submit your accounts within nine months after your year end date. If it is your first year of trading, you get twenty-one months from the date you incorporated your company.
HMRC: You must submit your company tax return within twelve months after the end of your accounting period.

What happens if I don't file?

Missing the deadlines results in automatic financial penalties. For Companies House, the penalty starts at £150 if you are one day late, and rises up to £1,500 if your accounts are more than six months late. These fines double if you miss the deadline two years in a row. HMRC also applies separate penalties for late tax returns. Persistent failure to file can lead to your company being dissolved and struck off the register.

What is corporation tax?

Corporation tax is a tax levied on the profits made by limited companies. Profit is the money your business has left over after paying all allowable business expenses, salaries, and operating costs.

When do I need to pay corporation tax?

Unlike personal tax, the deadline to pay your corporation tax is actually earlier than the deadline to file your tax return. You must pay your corporation tax bill within nine months and one day after the end of your accounting period. For example, if your financial year ends on 31 March, your tax payment is due by 1 January of the following year.

Do I need an accountant to file accounts?

You are legally allowed to manage and file your own accounts. However, the government closed its basic online filing portal, meaning companies must now use specialist commercial software to submit returns. Navigating tax laws, formatting accounts correctly, and identifying valid expenses requires significant time and technical knowledge. Working with an accountant reduces the risk of costly mistakes and keeps your focus on running your business.