Deadline to ask HMRC for online help with basis period reform information
HMRC have been helping affected taxpayers find information about their overlap relief position which they need to finalise their 2023/24 tax return under the new basis period reform rules. The online G-form which can be completed to ask for this help is closing and will not be available from 1 June 2026. If you haven’t asked for this information yet but you need it for your 2023/24 tax return, then you should use this service on GOV.UK while you still can.
Basis period reform
Basis period reform affects some self-employed individuals and partners in partnerships. Our detailed guidance explains what basis period reform is and who is affected. HMRC have been providing information on overlap relief which some people need to complete their 2023/24 tax return accurately. If you still need this information, you can ask HMRC for this using the online G-form on GOV.UK before 1 June 2026. After this date this request form will no longer be available. If you miss this deadline then HMRC may still be able to help you if you can’t work out your overlap relief position from your own records.
