Hi Clubman,
I meant ROS.
The OP seems to be already set up on ROS.
I have been on ROS for a long time. As far as I am aware self assessment cannot be done on Myaccount.
I think you can register for certain things on Myaccount.
Employer for example.
I doubt if you could register for income tax on Myaccount because form 11 can only be completed on ROS.
Best to dig out the RAN and try to set up ROS.
The Myenquiries can be very slow and a few times when I asked something, the answer did not deal properly with the problem.