Confirmation Statement (CS01)
Your annual confirmation to Companies House that your company details are correct. Every UK limited company must file a confirmation statement at least once a year.
Deadline
Within 14 days of anniversary
Late Penalty
Up to strike-off
Filing Fee
£13 (online)
What is a Confirmation Statement?
A Confirmation Statement (previously called the Annual Return) is a yearly snapshot of your company's information. It confirms to Companies House that the details they hold about your company are accurate and up-to-date.
Unlike the Annual Accounts (which show financial performance), the Confirmation Statement is about your company's structure: who owns it, who runs it, and where it's based.
Key Point
Even if nothing has changed since your last filing, you still need to file a Confirmation Statement to confirm the information is still correct.
Pre-Filing Checklist
Before filing your CS01, verify all of the following information is correct. AccountsOS automatically checks these against Companies House data.
Registered Office Address
Confirm your registered office address is correct and up to date.
Where official correspondence is sent. Must be in the UK.
Directors
Verify all current directors are listed with correct details.
Names, DOB, nationality, occupation, and service addresses.
Shareholders & Share Capital
Confirm shareholding structure and share classes are accurate.
Who owns what percentage of the company.
Persons with Significant Control (PSC)
Verify PSC register is complete and accurate.
Anyone who owns >25% shares or has significant influence.
SIC Codes
Check your Standard Industrial Classification codes reflect your business activities.
The 5-digit codes that describe what your company does.
SAIL Address
Single Alternative Inspection Location (if applicable).
Where you keep statutory registers if not at registered office.
When to File
You must file your Confirmation Statement at least once every 12 months. The "review period" runs from either:
- The date of incorporation (for first filing)
- The date your last confirmation statement was made up to
Example: If your company was incorporated on 15 March 2024, your first confirmation statement is due by 29 March 2025 (12 months + 14 days).
Penalties for Late Filing
Strike-off: If Companies House doesn't receive your confirmation statement, they can start proceedings to dissolve your company.
How AccountsOS Helps
We make sure you never miss your confirmation statement deadline.
Automatic Deadline Calculation
We sync with Companies House to know your exact filing deadline. No manual tracking required.
Email Reminders at 14, 7, 3, and 1 Day
Get timely reminders with a direct link to file. Each email includes your pre-filing checklist.
Pre-Filing Verification
We compare your current company data against Companies House records and flag any discrepancies.
Direct Filing Link
One click to the Companies House WebFiling portal, pre-authenticated and ready to confirm.
Frequently Asked Questions
Can I file my confirmation statement early?
Yes, you can file at any time during your review period. Filing early shortens the review period — your next due date will be 12 months from when you filed.
What if I need to update information before filing?
You should file separate forms to update specific information (like CH01 for director changes) before filing your confirmation statement.
Is the confirmation statement the same as annual accounts?
No. Annual Accounts show your financial position and are filed separately. The Confirmation Statement confirms your company structure (directors, shareholders, address, etc.).
What's the difference between CS01 and the old Annual Return?
The CS01 replaced the Annual Return in 2016. It's simpler — you only confirm information is correct rather than re-entering everything.
New for 2025: Identity Verification Required
From Spring 2025, all company directors must verify their identity with Companies House and include their personal code when filing confirmation statements. Your filing will be rejected without valid personal codes for all directors.
Related Resources
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