Child Maintenance-Should fathers on benefits pay more?

My ExP owns his home outright, receives in excess of £1,200/month in disability benefits and works cash in hand. His only outgoings are food and utility bills for himself. Is it fair that he only pays £7.00/week maintenance for our DD10? For context, I am a lone parent and own a mortgaged home. I slightly exceed the threshold for universal credit. My disposable household income after mortgage and bills equates to half his, but with two people to support. Is the system broke? Should disposable income be considered by CMS when paying parent is in receipt of benefits?

Another thing that does bother me is that he could earn 70k plus, through the books, but if he receives any form of benefit eg low rate care component for PIP, he would still only have to pay £7/wk. A benefit entitlement letter seems to be a get out of jail free card..

I tried that, but tbh they were not interested, they clearly do not have the resources to investigate

Report him.

I would like to see the law changed so that there is a minimum amount of maintenance that a child is entitled to and that money is paid to the resident parent via HMRC. That money then becomes a debt from the non-resident parent to the government and it is owed (with interest) for the rest of their life and from their estate if necessary. No escape, no way of wriggling out of it. It's only written off if there's no money left when they die.

It will never happen, but as a society non-payment of child maintenance should be treated as seriously as tax evasion.

Shame on him and his family for enabling him to avoid supporting his own child.

Its the cash in hand thats the problem, which lets these people get away with not having to pay Child Maintenance.
The people who employ and pay cash in hand are also the problem.
Theres no easy solution for this.
You can't report it without solid proof.
The employers deny they have these employees who they are paying cash in hand to.

In his case, he works for his family’s roofing company, of which he was formerly a director.

My ex doesn’t suffer from physical disability. He claims for his MH, but still manages to work 9-5, five days a week, cash in hand, of course

I never understand why people need the extra money on PIP when they work? Its like when the government allow alcoholics to claim sickness benefits which is more money and they don't have to look for work, so obviously they are being given extra money to sit at home and drink even more , where's the logic in any of the government systems?

I certainly don't understand why the CSA Dept don't do more to help parents who are claiming CSA for their DC. It all seems a bit useless really I'm sure back in the day 20 years ago my ex was paying £5 a week for our DS out of his benefits so it hasn't gone up much in 20 years. I stopped claiming it coz there was no point and he drifted off never to be seen again. How do they let the parent having to pay CSA owe so much in arrears? Especially when they claim benefits or work, they are quick enough taking money out of benefits or wages if you owe the council or the government money.
The whole system is ridiculous.

I never understand why people need the extra money on PIP when they work? Its like when the government allow alcoholics to claim sickness benefits which is more money and they don't have to look for work, so obviously they are being given extra money to sit at home and drink even more , where's the logic in any of the government systems?

I certainly don't understand why the CSA Dept don't do more to help parents who are claiming CSA for their DC. It all seems a bit useless really I'm sure back in the day 20 years ago my ex was paying £5 a week for our DS out of his benefits so it hasn't gone up much in 20 years. I stopped claiming it coz there was no point and he drifted off never to be seen again. How do they let the parent having to pay CSA owe so much in arrears? Especially when they claim benefits or work, they are quick enough taking money out of benefits or wages if you owe the council or the government money.
The whole system is ridiculous.

I never understand why people need the extra money on PIP when they work? Its like when the government allow alcoholics to claim sickness benefits which is more money and they don't have to look for work, so obviously they are being given extra money to sit at home and drink even more , where's the logic in any of the government systems?

I certainly don't understand why the CSA Dept don't do more to help parents who are claiming CSA for their DC. It all seems a bit useless really I'm sure back in the day 20 years ago my ex was paying £5 a week for our DS out of his benefits so it hasn't gone up much in 20 years. I stopped claiming it coz there was no point and he drifted off never to be seen again. How do they let the parent having to pay CSA owe so much in arrears? Especially when they claim benefits or work, they are quick enough taking money out of benefits or wages if you owe the council or the government money.
The whole system is ridiculous.