My T also increased her fee after I had been seeing her for about 4 years. I wasn't expecting it and to be honest was not really happy about it. It was only a £5 increase so it wasn't the money that bothered me, but I guess I saw her as a well off person, living in a big house, probably not needing the money and I was a loyal long-term client. She also approached it rather awkwardly and did not give me much notice. She began with "I hate talking about money but from November (or whenever it was, which was only a few sessions away) is x amount alright?". I was taken by surprise. I would prefer if clients are kept at the rate they started at since it is alot of money in the first place and if you are in long-term therapy, you are giving them that regular guarantee of income. Just my opinion.