It is a disgrace. Around 90% of resident single parents are women, and it is very deliberate that the entire system is set up to disadvantage them.
Child maintenance set at 15% income? What resident parent has 85% of their income left to spend as they choose having covered the costs of housing, feeding and clothing their child, let alone anything beyond the essentials?
CMS should be set at a level that covers 50% of the costs of raising a child, including childcare. And it needs to be enforced in a similar way to non-payment of tax: a criminal offence, automatic deduction from salaries, and severe penalties for non-payment. Confiscation of passports/ driving licences would be a good initial step, until all outstanding amounts are cleared and prison sentences in the event of prolonged non-payment. Deduction should also be prioritised - like taxes - above any other debts the person owes or other expenses they may have.
And then we have the tax system which enormously penalises single parents. A two parent household gets twice the tax free allowance, can still receive child benefit at twice the income, earn twice as much before higher rate tax is applied, and can earn twice as much before losing their personal allowance, tax free childcare and funded nursery hours.
The effect of that is that the single parent is taxed far, far more than a two parent household with the same household income, despite the fact that they are already trying to do everything (provide and care) in only 24 hours per day not 48, and are also therefore likely to have much higher childcare costs on average, so the tax system deliberately compounds this disadvantage.
If you run the calculations on the effect on net income after tax/ benefits and childcare, a single parent with two children in childcare has to earn £140k to have the same net income as a couple both earning average salaries of £30k. That is just astonishingly unfair, by any objective standard.
Of course it will always more expensive to cover housing etc on your own but then to be taxed more on the same income on top of that, making it even harder or almost impossible to earn enough to reach the average standard of living for a two parent family no matter what you do, there is something very seriously wrong with the system itself. In most countries the tax system gives higher allowances to single parents to level the playing field with two parent households, rather than deliberately compounding the disadvantage those families have already by virtue of one parent trying to fulfil two roles at once.
And yet, when these issues have been raised with both the Conservatives and with Labour, neither care or have any intention of removing these deliberate disadvantages and penalisations of single parents. The tax part is very easy to fix, any chancellor could do it. You simple double all thresholds and allowances for single adult households.
Rachel Reeves was in fact asked about this in her interview with Mumsnet not long ago but was not interested, when she could do this on her first day in office is she becomes Chancellor. 😡 Mumsnet themselves should be working on exactly this type of campaign and stated previously they'd research it further but have never said anything further about it that I have seen. And while it's been raised on many threads here before, there always seems to be a cohort of women who pipe up saying it would be "unfair" to tax single parents the same as a couple with the same income. 😒 Like they can't stand the thought of a single parent having an "advantage" (not being taxed more than them while continuing to do everything on their own, an advantage?! Basic fairness, more like).
These things really do need to change and anybody who cares about women and children would be behind such a campaign. I hope you manage to make some headway with it OP. Maybe it is worth yet again trying to ask Mumsnet to get behind such a campaign, I don't know. Sadly most single parents are probably too exhausted to do much about it and those in power do not seem to care about it at all. We have no voice in parliament, even from the female MPs.