Filing a Self Assessment return to date of death

I am the Executor and Personal Representative of my late mother, and a Self Assessment return is required to be completed for the period to date of death. I am trying to log in using my late mother’s Government Gateway but a message appears saying I’ve to phone HMRC and speak to the Bereavement Helpline. I want to file my late mother’s tax return online. Do I need to register for a new Government Gateway to do this?

Hi,

These returns can only be filed by paper.

Thank you.