16/10/2026
October brings darker evenings and the leaves coming down, but for plenty of businesses and taxpayers, it's also a month full of deadlines.
A few key dates worth having on your radar:
5 October — the deadline to tell HMRC if you need to register for Self Assessment for the first time, covering the previous tax year.
31 October — the deadline for submitting a paper Self Assessment tax return.
Company deadlines — depending on your accounting period, October can also bring deadlines for filing annual accounts or your Corporation Tax return.
Because these dates vary from business to business, it's easy for one to sneak up on you without much warning.
We keep track of the deadlines that apply to each of our clients, so you can stay on top of things without it taking up your time.
Not sure which October deadlines apply to you? Speak to Carleys.
📞 01634 394 045
✉️ [email protected]