Self Assessment – Key Dates

31 January 2022 – First payment on account due for 2021/22 tax year.

31 July 2022 – Second payment on account for 2021/22 tax year.

5 October 2022 – Deadline for notifying HMRC of new sources of income (including the Child Benefit charge) if no tax return has been issued for 2021/22 tax year.

31 October 2022 – Deadline for submission of 2021/22 non-electronic returns.

30 December 2022 – Deadline for submission of 2021/22 electronic tax returns if ‘coding out’ of eligible underpayment is required.

31 January 2023 – Deadline for filing electronic tax returns for 2021/22. Balancing payment due for 2021/22 tax year. First payment on account due for 2022/23 tax year.