I think there should be a fee with the CSA.
I don't know if the CSA is manned by incompetents/people who don't care or if the system is just so dire and crap it is un-manageable.
When a couple separate then the standard should be the CSA guidelines (on the website) from this point. I am not arguing if they are fair amounts or not just that they are a guideline. Of course the couple can agree other amounts they are both happy with.
Ok sorry for using man as NRP and woman as the one with the children. I know it is not always the case but don't take it as sexist.
If a man doesn't pay up and the woman has no choice but to go to the CSA there should be a cost. This services doesn't come for free and all the people who work there have to be paid plus all the other costs involved.
If a man deliberately makes himself unemployed to get out of paying then the CSA should calculate his maintenance based on what he was earning and the woman should get the 15/20% out of his JSA/IB etc BEFORE he gets any. If there is not enough or none left over he can accrue the rest of the amount until he goes back to work.
If a man/company collude to pay him minimum wage then the CSA should look at his previous wage and the industry standard (which ever is the higher) and pay the woman based on this. The company should be fined for IMO fraudulent behaviour.
If a man is on a commission based job or driving around in a ferrari, living in a massive house and having holidays then he has some means of support and this should be taken into account in order to pay the woman.
Any case where a RP has to take a NRP to the CSA because they are not paying then the NRP should have to pay the costs of the case. Sort of like based on an average office persons salary plus a litte extra per hour for calls/overheads etc. Say £10/hour?
This shoud be OVER and ABOVE what the RP gets as maintenance.
The longer someone takes to pay up the higher the costs to encourage them to sort it out.
There is no point a woman taking a man through the CSA if she is getting the website guideline and if she does it just to get more (not going to happen if he is fair and paying) then she should incur the fee.
If there is a genuine concern on the man's part about who is the father they can get a DNA done private (or through the CSA if cheaper). If the child is not his the woman should pay the fee if it is he should pay the fee.
The CSA needs real teeth to do these things. It needs proper enforceable powers and the shoddy service completely overhauled.
You don't (often) hear of secret/top secret files going missing. A similar system of tracking CSA cases needs to be implemented.
Of course this is a really simplistic look at a very complex and problematic system.
The main aims are that maintenance should be payable as soon as a couple split to provide for the children and that selfish people are not encouraged or able to not pay.