Year-end accounts: deadlines, filings and what happens when

Understanding Your Year-End Accounts

As a director of a UK limited company, you have a legal obligation to prepare and submit annual accounts, often referred to as year-end accounts. These accounts provide a financial snapshot of your company's performance and position. They are crucial for transparency, tax calculations, and demonstrating compliance with company law.

Your annual accounts typically include:

• A balance sheet, showing the company's assets and liabilities.
• A profit and loss account (or income statement), detailing income and expenses.
• Notes to the accounts, providing further detail and explanations.
• A directors' report.
• An auditor's report, if your company is not exempt from audit.

The specific content can vary depending on your company's size, with smaller companies often able to file less detailed versions.

Key Deadlines for Limited Companies

There are two main bodies you need to report to, each with their own deadlines: Companies House and HM Revenue & Customs (HMRC).

Companies House Deadlines

Companies House is the UK's registrar of companies. All limited companies must file their annual accounts with them.

• First Accounts: For a newly incorporated company, your first set of accounts is due 21 months after your company's incorporation date, or three months after your accounting reference date, whichever is later.
• Subsequent Accounts: After your first year, your annual accounts must be filed with Companies House within nine months of your company's accounting reference date (your financial year-end).

For example, if your company's financial year ends on 31 March 2026, your accounts are due to Companies House by 31 December 2026.

HMRC Corporation Tax Deadlines

HMRC is responsible for collecting taxes. You must file a Company Tax Return and pay any Corporation Tax due.

• Company Tax Return (CT600) Filing: Your Company Tax Return must be filed with HMRC within 12 months of the end of your accounting period.
• Corporation Tax Payment: Any Corporation Tax you owe is generally due nine months and one day after the end of your accounting period.

It's important to note that the payment deadline is before the filing deadline for your Company Tax Return. If your company's taxable profits exceed £1.5 million (figures for illustration – check current rates), you may need to pay your Corporation Tax in quarterly instalments.

What You Need to File and Where

The documents you file depend on the recipient:

• Companies House: You will file your annual accounts. For most small companies, these can be "filleted" or "abbreviated" accounts, which means they contain less detail than full statutory accounts. These typically include a balance sheet and notes, and sometimes a condensed profit and loss account.
• HMRC: You must file a Company Tax Return (CT600) along with a full set of statutory accounts. Even if your company qualifies as "small" for Companies House purposes, you still need to submit full accounts to HMRC for Corporation Tax calculations.

What Happens if You Miss a Deadline

Missing deadlines can lead to penalties and other serious consequences.

• Companies House Penalties: These are automatic and increase the longer your accounts are late. For a private company, penalties start at £150 for being up to one month late and can rise to £1,500 if more than six months late (figures for illustration – check current rates). If your accounts are filed late in two consecutive financial years, the penalty for the second year is automatically doubled. In severe cases, directors can face personal prosecution, and the company could be struck off the register.
• HMRC Penalties: For a late Company Tax Return, you'll face an initial £100 penalty, with another £100 if it's still outstanding after three months. Further penalties, including a percentage of the unpaid tax, apply if it's six or twelve months late. HMRC also charges interest on any overdue Corporation Tax payments.

Common Mistakes

• Confusing Companies House and HMRC Deadlines: These are separate and often different. Always be aware of both.
• Not Providing Information on Time: Your accountant needs sufficient time to prepare accurate accounts. Delaying the provision of your records can lead to missed deadlines.
• Assuming No Tax is Due: Even if your company made no profit or is dormant, you still have filing obligations with both Companies House and HMRC.
• Incorrectly Classifying Company Size: Your company's size (e.g., small, micro-entity) affects the type of accounts you can file with Companies House and whether you need an audit. The criteria for a 'small company' for accounting periods beginning on or after 6 April 2025 are: turnover no more than £15 million, balance sheet total no more than £7.5 million, and no more than 50 employees on average (you need to meet at least two of these).