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Submitting your tax return as soon as the next tax year starts might seems like a strange notion, but it definitely has benefits. Rather than putting your Self Assessment tax return off until January, read our guide to why sooner is better.

How early can I submit my Self Assessment tax return?

A Self Assessment return for a particular year can be submitted from the day after that tax year ends. For example:


Check out our Self Assessment guide to learn how it all works.

Is it better to submit my tax return early?

Absolutely! There are several advantages to completing your Self Assessment early in the year, rather than waiting.

Receive your tax refund sooner

If you’re likely to receive a tax refund (which is often the case for CIS contractors in particular), then submitting your tax return sooner means getting that money back faster, too.

Claim back all your allowable expenses

Making your submission earlier gives you more time to review everything properly and reduce the risk of mistakes. It also gives you a chance to claim for all those allowable expenses, and minimise that tax bill. It also means you have more time to chat to your accountant, bookkeeper, or anyone else who can help. Watch our video below for our top tax-saving tips.



Give yourself more time to prepare for Self Assessment

You’ll know exactly what you owe, and give yourself more time to pay it over a longer period – which helps with planning your cash flow! Tax returns can be stressful, and paying them can be even worse. Getting your Self Assessment in as soon as possible can help alleviate some of the worrying, and help you prepare.

If I submit my Self Assessment earlier, do I have to pay straight away?

The date you submit your Self Assessment doesn’t affect the payment deadline, so filing your tax return earlier in the year doesn’t mean you need to pay your bill earlier, too.

Filing earlier simply gives you more time to budget for your tax bill. Which is definitely less hassle than being fined by HMRC for late payment.


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Registering for Self Assessment isn’t instant

Before getting as far as sending a return, you’ll need to register for Self Assessment. The process isn’t instant; after filling in the online form you’ll need to wait a few days for confirmation letters before completing the registration. Which is another good reason for getting everything sorted out early!

What are the Self Assessment deadlines for my 2021/22 tax return?

There are slightly different deadlines for submitting your tax return depending on how you submit it. It’s important to get your return in before the deadline, as well as paying any money that you owe, in order to avoid penalties.


Register for Self Assessment – If you need to send a tax return for 2021-22, but didn’t send one for the previous year, you should register for Self Assessment by this date. 5th October 2022
Paper tax return – The deadline for submitting your Self Assessment tax return if you use a paper form. Midnight, 31st October 2022
Online tax return – This is the deadline for submitting your tax return if you submit online. Midnight, 31st January 2023
Paying your Self Assessment tax bill – You should pay your tax bill in full by this date in order to avoid penalties. Midnight, 31st January 2023


Talk to us about how our online accounting services can help you with your 2021/22 Self Assessment. Call 020 3355 4047, or select the Live Chat button on screen.

About The Author

Elizabeth Hughes

A content writer specialising in business, finance, software, and beyond. I'm a wordsmith with a penchant for puns and making complex subjects accessible. Learn more about Elizabeth.

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Dariusz Stepien
Dariusz Stepien
18th April 2022 1:27 pm

Thank You for advice

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