Starting a new business? Get 40% off our accountancy services for 3 months! 😎


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:

22/2023 Self Assessment Registration Deadline22/2023 Self Assessment Paper Return Deadline
22/2023 Self Assessment Online Return Deadline22/2023 Self Assessment Payment Deadline

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 subcontractors 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 – especially if your tax bill is more than £1,000 and you need to make Payments on Account.

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

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. Unless of course, you want to pay your tax bill early.

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.

Comprehensive tax return services

From only £24.50 per month

Learn more

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 2022/23 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 and pay any money that you owe before the deadline, in order to avoid penalties.


Register for Self Assessment – If you need to send a tax return for 2022/23 but didn’t send one for the previous year, you should register for Self Assessment by this date. 5th October 2023
Paper tax return – The deadline for submitting your Self Assessment tax return if you use a paper form. Midnight, 31st October 2023
Online tax return – This is the deadline for submitting your tax return if you submit online. Midnight, 31st January 2024
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 2024


Talk to us about how our online accounting services can help you with your 2022/23 Self Assessment. Call 020 3355 4047 to chat to the team, and get an instant online quote.

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.

More posts by this author
Notify of
Newest Most Voted
Inline Feedbacks
View all comments
Dariusz Stepien
Dariusz Stepien
18th April 2022 1:27 pm

Thank You for advice

5th May 2023 8:12 pm

If I started self employment in January 2023, do I need to do a tax return in April 2023??

Read more posts...

Staff Spotlight: Rebecca Boyd, Accounts Junior

This month we spoke to Rebecca Boyd, Accounts Junior at The Accountancy Partnership! Give an overview of the duties, functions and responsibilities…

Read More

Staff Spotlight: Charlotte Hughes, Accounts Junior

This month we spoke to Charlotte Hughes, Accounts Junior at The Accountancy Partnership! Give an overview of the duties, functions and responsibilities…

Read More

February 2024 Client of the Month: CHERESHNIVSKA

This month we spoke to Iryna, CEO and Founder of CHERESHNIVSKA!  CHERESHNIVSKA | Instagram | Facebook Hey Iryna! Tell us about your business CHERESHNIVSKA…

Read More
Back to Blog...

Confirm Transactions

The number of monthly transactions you have entered based on your turnover seem high. A transaction is one bookkeeping entry such as a sale, purchase, payment or receipt. Are you sure this is correct?

Yes, submit my quote
No, let me change it

Please contact our sales team if you’re unsure

VAT Returns

It is unlikely you will need this service, unless you are voluntarily registered for VAT.

Are you sure this is correct?

Yes, the business is VAT registered
No, let me change it

Call us on 020 3355 4047 if you’re not sure.


You will receive our bookkeeping software Pandle for free, as part of your package.

You can use this to complete your own bookkeeping, or we can provide a quote to complete your bookkeeping for you.

Please select and option below:

I will do my own bookkeeping
I want you to do my bookkeeping

Call us on 020 3355 4047 if you’re not sure.