15 January 2025
Self Assessment Deadline 2025
The deadline for submitting your Self-Assessment returns online and paying your tax for the 2023 to 2024 tax year is 31 January 2025. If you miss the deadlines, you may incur penalties but these will be waived if you have a reasonable excuse.
What happens if I have paid too much tax?
If you have paid too much tax, we’ll let you know and repay you once we’ve processed your Self-Assessment return. You can also check if you’re due a refund in the HMRC app once you’ve filed your return.
Get further information on completing your self-assessed tax return
If you need further information, head over to our news page, What to do if you’re new to completing Self-Assessment tax returns, where Jashoda Pindoria from HM Revenue and Customs (HMRC) explains what Self-Assessment is and what you may need to do.
Information provided in this news article may be subject to change. Please make note of the date of publication to ensure that you are viewing up to date information.