Self assessment - Marriage Alowance of SA100

Hi, My wife would like to transfer £1,260 (marriage allowance) to me to reduce the amount of tax. My wife applied the marriage allowance by online (https://www.gov.uk/apply-marriage-allowance) and received the confirmation of marriage allowance email. Should I also need to fill the information into the part of marriage allowance of SA100 form? Hopefully reply me as soon as possible. Thanks.

Hi,

You don't claim the Marriage Allowance on the return. If it is in place, HMRC will update the SA calculation to include the Marriage Allowance.

Thank you.