Self assessment – key dates
31 January 2024 – First payment on account due 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.