Higher rate tax on R185 Income (Interest Earned during Administration)

Hi, I have been given an R185 form (Statement of Income From Estates) that shows the Interest Earned and Income Tax Paid on my portion as a beneficiary of my late mother's estate during the period of administration. I pay higher rate tax, so it is my understanding that I am liable for the extra tax due on this income since it was greater than £500? I don't complete a self assessment so if I am liable for the extra tax how do I declare this income to HMRC? Many thanks

Hi,
To declare this untaxed interest to HMRC you will need to contact us direct about this.
Please see the following Links & Guidance:
Tax on savings interest
Contact HMRC
Thank you.