Hi, this is my first January in my practice. I'm getting approached by clients to do their self assessment tax returns, which is great, but I'm looking for some advice on what to do with setting myself up to be their tax agent with HMRC. Is the quickest way to do this online under authorise a client? It takes about a week or 2 to get set up therefore I'm thinking of having a cut off and not take on anymore new clients as the set up completion will be too close to the filing deadline, I'm worried I won't be set up in time to file their return. Be interested to know what others do??