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  • Writer's pictureLuke Malone

Important Dates for the 2022-2023 Tax Year

Updated: Apr 9, 2022

6 April: first day of the new 2022-23 tax year

The new tax rates and allowances set out in the budget for 2022-23 will come into force from today, so make sure you know if anything has changed.

If you have all of the information you need, you could file your 2021-2022 tax return from this date.

31 July 2022: second payment on account due

Self-employed workers who pay tax through payment on account will have to make their second payment by midnight on 31 July - If you are a client of mine you will receive and automatic email remaining you of the amounts due and date.

The amount you pay is an estimate based on your earnings in 2020-21. If you still owe tax (for example, if you earned more than you did in 2019-20), a further 'balancing payment' will be due on 31 January 2023.

This is also when you'll have to make your first payment to cover the 2022-23 tax year.

5 October 2022: register for self-assessment

If you've never submitted a self-assessment tax return before, you must register by 5 October 2022 in order to submit for the 2021-22 tax year.

This will allow you to get your 'Unique Taxpayer Reference' (UTR) number and activate code in time which you need to file your first return.

31 October 2022: paper tax returns due

This is the deadline for filing a paper tax return, However, if you receive a notice from

If you miss the deadline for filing your paper tax return, don't be tempted to try and file it late. You'll still have time to complete an online tax return instead - as these aren't due until 31 January. But don't submit both.

30 December 2022: opt into PAYE

If you file your tax return online and also have earnings taxed under PAYE, you can opt to have overdue tax collected via your tax code throughout the following year.

However, to be eligible your tax bill must be less than £3,000 and you must file your online return by this date. The advantage of this is that any tax payable would be paid over 12 months from April 2022, rather than a single lump sum by 31 January 2023.

Fines for late tax returns

It's important to be aware that filing your tax return late, or failing to pay the tax you owe on time, will probably mean you'll face extra penalty fees and interest charges.

1 day late

£100 for one day after deadline

Up to 3 months late

£10 for each additional day (capped at 90 days), plus £100 initial fine - maximum of £1,000

6 months late

Either £300 or 5% of the tax due (whichever is higher), on top of the penalties above

12 months late

An additional £300 fine, or 5% of the tax due, plus the above penalties. In the most serious cases, you may be fined 100% of the tax due


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