sorry to add my two pence worth, not been on this site in like forever,,, but, came accross this ,,,the whole csa system is a great big farce!!
My ex h, "works" 16 hours a wk,,,(gets the rest cash in hand) .. his wife works full time, they are on csa 2, so he pays absolute minimum!
My husband is on csa 1,,i work and he works yet both wages are taken into account for csa.
Now, although i dont get tax credits,i totally understand what the op is saying,,,,
They get wages, cb, tax creds, and ctc
The ex partner gets cb, ctc, income support maybe,,,, this , therefor, means that the ex partner, gets both her ctc, and a percentage of the second familes ctc,,,,, so i totally see what they are saying.
One of my biggest gripes is,,, the law says you need xyz too live on,,, so therefore,,, when you pay a massive portion in csa, which in my husbands case he does, not far short of a thousand pounds a month,,, why does his ex still qualify for maximum benefits.
He didnt have a good job when they were together, he has never denied his daughter anything, providing he can afford it, yet his ex maintains a better life style than us, courtesy of his "csa contribution"
I am not a bitter ex wife, not a bitter new partner, i just think they should be a fairer system for all, rather than the current two which are running,,,,,,,,