Every UK company has a CS01 confirmation statement deadline - and missing it can lead to serious Companies House compliance problems.
A CS01 confirmation statement must be filed with Companies House at least once every 12 months. This applies to trading companies, dormant companies and companies that have never traded.
If you are searching for CS01 deadline, confirmation statement deadline, CS01 due date or when is my CS01 due, this guide explains how the filing period works.
Important: You must file a CS01 confirmation statement even if there have been no changes to your company.
Your CS01 confirmation statement is due at least once every 12 months.
Your first confirmation statement review period is based on the date your company was incorporated.
For subsequent filings, the confirmation statement review period runs from the date of your previous confirmation statement.
You can check your company's current confirmation statement date and filing information through the Companies House register.
The confirmation statement is based on a 12-month review period.
Once the review period ends, Companies House allows a filing window for submitting the confirmation statement.
The statement can be filed up to 14 days after the review period ends.
However, waiting until the end of the filing window is not recommended. Filing your CS01 online as soon as the information has been checked can reduce the risk of missing the deadline.
Tip: Always check your company's confirmation statement date directly with Companies House rather than relying on an old reminder or previous filing date.
The CS01 deadline is linked to your company's confirmation statement review period.
For example:
Your confirmation statement date is 1 September 2026
Your next 12-month review period ends on 1 September 2027
Your next CS01 must then be filed within the permitted filing window
The exact filing information for your company should always be checked on the Companies House register.
Yes.
You can file your confirmation statement before the end of the review period.
Filing early can be useful if you want to deal with your company's annual filing requirements ahead of time.
However, filing early can also affect the start date of your next confirmation statement review period.
Yes.
When you file a confirmation statement early, the new confirmation statement date becomes relevant to your next review period.
For example:
Event | Example Date |
|---|---|
Current confirmation statement date | 1 September 2026 |
CS01 filed early | 1 August 2027 |
New confirmation statement cycle | Based on the new filing date |
If you are planning to file early, make sure you understand how the new filing date affects your next CS01 deadline.
Yes.
Dormant companies must file a confirmation statement just like active companies.
This remains true if the company:
Has never traded
Has no income
Has no employees
Has no significant accounting transactions
Has had no changes to its company information
Dormant status does not remove the CS01 filing requirement.
Failing to file your confirmation statement can result in Companies House enforcement action.
A company that does not file its confirmation statement can face a financial penalty and continued non-compliance can ultimately lead to strike-off proceedings.
This is why it is important to deal with an overdue CS01 as quickly as possible.
Missed your CS01 deadline? Check your Companies House record and take action as soon as possible.
The current Companies House confirmation statement filing fee is:
£50 for online filing
£110 for paper filing
This means the current standard fee for CS01 online filing is £50.
Before you file your confirmation statement, review the information held by Companies House.
Depending on your company, this may include:
Shareholder information
Share capital
SIC code
PSC information
Registered email address
Director identity verification details where required
If something has changed that requires a separate Companies House filing, you may need to report that change separately rather than simply including it in your CS01.
Identity verification is now an important part of the wider Companies House reform programme.
Current confirmation statement requirements include identity verification details for directors where required.
Directors who have completed identity verification receive a personal code from Companies House which is used to connect their verified identity with the company.
If your CS01 deadline is approaching, it is sensible to make sure any required identity verification has been dealt with in advance.
Companies must also provide a registered email address where required.
The registered email address allows Companies House to communicate with the company and is not displayed publicly on the Companies House register.
Directors should make sure the company can access this email account and that Companies House communications are monitored.
Your CS01 deadline and annual accounts deadline are separate.
Filing | Purpose | Deadline |
|---|---|---|
CS01 | Confirms company information | At least once every 12 months |
Annual Accounts | Reports financial information | Separate accounts deadline |
This means your company can have two separate Companies House filing deadlines during the year.
Directors commonly make the following confirmation statement filing mistakes:
Assuming a dormant company does not need a CS01
Confusing the CS01 deadline with the annual accounts deadline
Waiting until the final day to file
Assuming nothing has changed means no filing is required
Failing to check the Companies House register
Not completing required identity verification
Failing to check shareholder or SIC information
✔ Check your company's confirmation statement date
✔ Check the CS01 filing deadline with Companies House
✔ Review your company information
✔ Check shareholders and share capital
✔ Check your SIC code
✔ Review PSC information
✔ Complete required identity verification
✔ Check your registered email address
✔ File your CS01 online before the deadline
Need to file your CS01?
FCS makes CS01 online filing simple and straightforward, helping you complete your confirmation statement without the complexity of full accounting software.
Your CS01 confirmation statement is an important annual Companies House filing.
Every company, including dormant and non-trading companies, must file a confirmation statement at least once every 12 months. Missing your filing deadline can lead to enforcement action and potentially strike-off.
Check your Companies House confirmation statement date, review your company information and file your CS01 online before the deadline.
Ready to file your CS01?
Simple. Secure. Straightforward CS01 filing.
