Basically my ex pays me £40 a week towards our daughter and has done since we split up. Suddenly he is saying it's best to go through the CSA in his words so "he can prove what he pays out" - he also has another child through a previous relationship. I have heard that the CSA are going to start charging mothers an initial fee for using the service as well as taking a % out of what you are given - this to me means my daughter will lose out. I struggle enough as is without some kind of tax being put on the money I get. I don't understand why suddenly he wants to do it this way unless there is some tax saving implication for himas he's self employed (if there is he's not admitting this). Seems to me things should stay as they are???