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Self assessment - key dates

2024/25

31 January 2024 - First payment on account due for 2023/24 tax year.

31 July 2024 - Second payment on account for 2023/24 tax year.

5 October 2024 - Deadline for notifying HMRC of new sources of income (including the Child Benefit charge) if no tax return has been issued for 2023/24 tax year.

31 October 2024 - Deadline for submission of 2023/24 non-electronic returns.

30 December 2024 - Deadline for submission of 2023/24 electronic tax returns if 'coding out' of eligible underpayment is required.

31 January 2025 - Deadline for filing electronic tax returns for 2023/24. Balancing payment due for 2023/24 tax year. First payment on account due for 2024/25 tax year.

2023/24

31 January 2023 - First payment on account due for 2022/23 tax year.

31 July 2023 - Second payment on account for 2022/23 tax year.

5 October 2023 - Deadline for notifying HMRC of new sources of income (including the Child Benefit charge) if no tax return has been issued for 2022/23 tax year.

31 October 2023 - Deadline for submission of 2022/23 non-electronic returns.

30 December 2023 - Deadline for submission of 2022/23 electronic tax returns if 'coding out' of eligible underpayment is required.

31 January 2024 - Deadline for filing electronic tax returns for 2022/23. Balancing payment due for 2022/23 tax year. First payment on account due for 2023/24 tax year.