Real time capital gains tax return

Hello I have an elderly client who needs to file a capital gains tax return through real time. They do not otherwise file self assessments. I understand this can only be done through their personal gateway account but is it possible for them to invite me into their account as a team member and thereby would it be possible for me to submit their capital gains tax return? I dont understand why there is no option for clients to authorise agents for this piece of service?

Hi ,
 

No.  There is no facility available for an agent to submit their client's capital gains tax realtime transactions gains online (CGTRTT).  Your client either creates their own CGTRTT account and report the gains themselves or they declare the gains in a self assessment tax return. Thank you .