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Compliance Deadlines

Know Your Micro-Entity Filing Deadlines

Ensure timely submission of your company's accounts to avoid penalties.

Understanding Micro-Entity Filing Deadlines

Micro-entities in the UK have specific deadlines for filing their annual accounts with Companies House. These deadlines are crucial for maintaining compliance and avoiding potential penalties. Understanding these dates is essential for all small business owners and their accountants.

Companies House Filing Deadlines for Micro-Entities

Micro-entities must file their accounts with Companies House within 9 months of their financial year-end. For example, if a company's financial year ends on 31 March, the accounts must be filed by 31 December of the same year. This deadline applies whether the company is limited by shares or guarantee. Failure to meet this deadline can result in automatic penalties, increasing the longer the accounts are overdue.

HMRC Filing Deadlines for Corporation Tax

In addition to filing accounts with Companies House, micro-entities that are liable for Corporation Tax must also submit a Company Tax Return (CT600) to HMRC. The deadline for filing the CT600 is typically 12 months after the end of the accounting period. It's important to note that the CT600 filing deadline is separate from the Companies House accounts filing deadline. Companies must ensure both submissions are made on time to comply with all regulatory requirements.

Key Filing Dates Summary

To help you stay organised, here's a summary of the typical deadlines:

Why Meeting Deadlines is Crucial

Missing filing deadlines for either Companies House or HMRC can lead to significant consequences. Companies House imposes automatic late filing penalties, which increase with the duration of the delay. HMRC also charges penalties for late submission of the Company Tax Return. Beyond financial penalties, consistent late filing can damage a company's reputation and creditworthiness, potentially affecting its ability to secure loans or conduct business with other entities.

Simplify Your Filing Process

Taxvie helps you manage your company's accounts and tax filings efficiently. Stay on top of deadlines and ensure compliance with our user-friendly software.

Frequently asked questions

What defines a micro-entity in the UK?

A micro-entity is a small company that meets at least two out of the following three criteria: annual turnover of no more than £100,000; balance sheet total of no more than £100,000; and fewer than 10 employees. Specific conditions apply, and it's important to check eligibility.

Can micro-entities file abbreviated accounts?

Yes, micro-entities can file abbreviated accounts, which are typically shorter than full accounts. However, they still need to meet the filing deadlines for Companies House and potentially HMRC.

What happens if I miss the Companies House filing deadline?

If you miss the Companies House filing deadline, automatic penalties will be applied. These penalties increase the longer the accounts remain unfiled. For example, for accounts filed up to one month late, the penalty is £150; for more than one month late, it's £375.

Is the HMRC deadline the same as the Companies House deadline?

No, the deadlines are different. Companies House requires accounts to be filed within 9 months of the financial year-end. HMRC requires the Company Tax Return (CT600) to be filed within 12 months of the accounting period end. You must meet both.

Do all micro-entities need to file a CT600 with HMRC?

Only micro-entities that are liable for Corporation Tax need to file a Company Tax Return (CT600) with HMRC. If a company has no taxable profits and is not required to pay Corporation Tax, it may not need to file a CT600, but it must still file accounts with Companies House.

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Updated 2026-05-16