A private limited company must file its annual accounts with Companies House within 9 months of the end of its financial year.
Next due—
Check the date against your own records.
First accounts
Your first accounts are due 21 months after the date you registered with Companies House.
If you file late
Companies House charges a penalty for accounts filed after the deadline.
Get reminded before it's due
Regmindr tracks this and the rest of your FCA calendar, and emails your team before each deadline. Set it up from your year end in about two minutes.
Sources
This page is a summary, not legal or regulatory advice. The rules in the sources above take precedence.