How do I submit an amended tax return?
Time-frame for making amendments to your tax return
You can make a change to your tax return after you’ve filed it, for example because you made a mistake. If you want to make a change via electronic submission, you’ll need to make your changes by:
31 January 2026 for the 2023 to 2024 tax year
31 January 2027 for the 2024 to 2025 tax year
31 January 2028 for the 2025 to 2026 tax year
31 January 2029 for the 2026 to 2027 tax year
For the 2023/24 tax year, you can submit an amendment online until the 31/01/2026.
If you miss the deadline or if you need to make a change to your return for any other tax year you’ll need to write to HMRC. You have a further 3 years to make amendments by writing in to HMRC.
Your bill will be updated based on what you report. You may have to pay more tax or be able to claim a refund.
Please see the link below for further details:
https://www.gov.uk/self-assessment-tax-returns/corrections
How do I make the amended submission?
If you need to make an amendment to your tax return previously submitted to HMRC then this is possible using GoSimpleTax.
Please make any necessary changes, one you are happy with the changes please click the SAVE & CONTINUE button. You will then be guided to the 'Almost there' page. On this page please:
1. Select YES to the question below:
2. In the additional information box please provide a message to HMRC stating the reason for the amended tax return submission.
3. Please then follow the prompts in the top right hand corner of the screen to complete the submission process. Once the tax return has been submitted to HMRC we will display a confirmation message on screen.
You can double check if the submission has been successful by going into SETTINGS and SUBMISSIONS HISTORY.
If at anytime you have any questions please email support@gosimpletax.com
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