What are your accounting period dates?

Your accounting period cannot be longer than a full year and is normally the same as the financial year covered by your company's annual accounts.

Where can I find my accounting period dates?
Your accounting period dates are found on the 'notice to deliver a Company Tax Return' form (CT603) sent to your company.
Start date
For example, 27 3 2023​
End date (optional)
If you do not enter a date we will default to a full year from the start date
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