Key financial dates 2026
Keep ahead of the deadlines
We’ve put together a special list of all the important dates and deadlines that you can’t afford to miss or forget about. You’ll find everything you need to know from PAYE and tax return deadlines to some one-off dates. It’s all designed to be read at a glance – the ultimate tool for a busy business owner.
Other Important Dates Annually
VAT – Quarterly Returns to HMRC every 3 months on or before the 7th of the month, five weeks after your period end date.
Company Accounts – must be submitted to Companies House within nine months after the accounting period end.
Corporation Tax – The deadline to file your corporation tax return is 12 months after the end of the accounting period it covers. The tax is payable 9 months after the end of the accounting period.
For companies that pay corporation tax in quarterly instalments, these are due: 6 months and 13 days after the first day of the accounting period, 3 months after the first instalment, 3 months after the second instalment (14 days after the last day of the accounting period) and 3 months and 14 days after the last day of the accounting period
This applies to accounting periods ending after 30 June 2002.
Do you need help meeting any of these deadlines?
At bennettbrooks, we understand that there are many financial deadlines to contend with and this can become overwhelming, especially for busy business owners and self-employed individuals. Our team is available to help you stay compliant and plan ahead.
Contact us to talk through your needs and ensure you’re always one step ahead.
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