Backdating Mortgage Interest UK Rental Property

Hello - I have not claimed interest on my mortgage for my rental property for tax year 2020-2021 and 2021-2022. I can no longer amend my return for 2020-2021 so can I put all of the interest for both tax years as an amendment to my 2021-2022 return? Thank you.

Hi,

As the time limit to amend your 2020/21 Self Assessment has expired, a claim can be made under the overpayment relief provisions set out in Schedule 1AB TMA 1970.

SACM12150 - Overpayment relief: Form of claims   

You cannot make a claim on your 2021/22 self assessment for finance costs incurred in the previous year.

Thank you.