If Self Assessment is something you may need to deal with this year, there is an important date coming up: 5 October 2026.

It is worth putting this date in your diary now.

For many people, the first important step is not actually submitting the tax return. It is making sure you have registered for Self Assessment, or notified the tax authorities that you need to complete a tax return, by the relevant deadline.

So, the question is:

Do you need to take action by 5 October 2026?

And if you do, have you left yourself enough time to get everything organised?

There are a number of questions that can arise around Self Assessment. For example:

• Do I need to register for Self Assessment?

• Which tax year am I reporting?

• When does my tax return actually need to be submitted?

• Do I need to submit a paper return or can I file online?

• When does the tax need to be paid?

• What happens if I miss one of the deadlines?

These are important questions, but they are not all answered in this reminder. We have covered many of these topics separately in our blog, with posts explaining different types of tax returns, Self Assessment, registration, deadlines and other tax matters.

So if you are unsure, do not worry. Our expert in Elaga are in the right place. Visit our Blogger and use the search function. Try searching for terms such as “tax”, “tax return”, “Self Assessment”, “registration”, or “deadlines”. You will find more detailed posts to help you understand the particular issue you are looking at.

For now, the key dates to keep in mind for the 2025/26 tax year are:

• 5 October 2026 – registration or notification deadline where required.

• 31 October 2026 – paper tax return deadline.

• 31 January 2027 – online tax return and payment deadline.

A deadline may seem a long way away until it suddenly isn't.

If you need help or simply want someone to look at your situation, talk to us. We are happy to help.

Unsure? No problem. We can have a look for you.

Seek Accountant's Help for Your Tax Return

Tax efficiency and pay tax correctly is more important than ever to have reliable support. If you’re unsure about whether you need to file, how to report specific income types, or you want peace of mind your return is done correctly and on time — Elaga Accountancy can help.

We’ll handle your registration, confirm your UTR, prepare your return, and send it on your behalf so you’re compliant and penalty-free.

Don’t wait until the last minute and risk being caught out. Let us take the stress away — you’ll know your affairs are in order, and you’re meeting your legal duty to file and pay.

***Contact us to learn more.

#SelfAssessment #TaxReturn #TaxDeadline #UKTax #TaxReminder