Child maintenance in UK is ridiculously low.
Given that it's based on wages is it not that wages are ridiculously low?
Working 37.5hrs at NMW gives a monthly take home pay of £1,170 & a maintenance amount of £165 for one child with EOW contact.
This leaves approx £1,010 to cover every other bill including providing a home with a bedroom for contact.
Using my own costs for a 2 bed HA property:
Rent - 370
CT - 92
Utilities (inc mobile phone & net) - 125
Food - 151
Travel costs - 200 (not rural but public transport crap & expensive)
Insurances - 40
Car maintenance (inc RT) - 25
This leaves less than £10 a month for anything else - £84 a year for Christmas, birthdays, providing clothes for the DC when the RP refuses to send them... in situations like this it's not any easier being the NRP.
I think Mumsnet has a very south east centric view when it comes to maintenance & has the impression that NRP's are high earners, living the high life, moving into new relationships with more kids while paying the bare minimum for their children from the first marriage/relationship.
And while I'm aware that there are definitely cases like that the system to make those cases pay cannot penalise those cases where the NRP is barely making ends meet. Which is what most of the suggestions here would do.
As an example 40% of minimum wage is £468 this would leave the NRP £702 to cover everything - where would this be enough to provide a comfortable environment for the DC during contact? Meanwhile the RP working the same hours at NMW claiming in work benefits would have an income of £1,940 before the £468 so once that's added the RP's income is almost 3.5 times the NRP's.
It all comes back to the system being one size fits all but an individualised system would cost too much to implement & administer.