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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

DH stoping paying CMS

518 replies

donewiththistakemeaway · 29/06/2026 10:25

My husband told his ex-partner — the mother of his two oldest children — a year ago that he planned to leave his job within the next 12 months. She has never worked, and for the last 9 years he has paid her £1,500 per month voluntarily, even though the Child Maintenance Service calculates the correct amount should only be around £300.

The kids stayed with us for 10 nights a month, matching my husband’s days off. Between us, we did all school runs, clubs, meals, and bedtime routines — returning them to their mother around 8pm each evening. They couldn’t stay more nights because my husband’s shift pattern meant leaving at 5pm, driving 2 hours, working until 7am, and getting home by 9am. This would have left me alone caring for all 5 children while also working, handling all household tasks, and managing their activities. Meanwhile, their mother only had to put them to bed around 9pm, yet received far more money than required. We also take all five children to their clubs and activities every weekend.

My husband has now left that job — he was exhausted, and after 12 years of hard work, my own business has become successful enough for me to be the main earner. He reminded his ex repeatedly over the year that this change was coming and that his income would no longer support those higher payments.

He explained that he is now available full-time: he can offer full custody, 50/50 shared care, or flexible arrangements — whatever works for the children. He will be there for school runs, sickness, doctors’ appointments, school events, and anything else they need. The only change is that he can no longer make those payments.

This has caused a huge reaction. She is angry, calling him names and saying she won’t be able to afford her home. He asked her to consider getting a job, or for her new partner to contribute financially ( he does not work either) but she has threatened to involve a solicitor — claiming that if my husband stops paying, I must cover the cost because I’m so flush.

I do not believe this is my responsibility. To keep things calm, I offered to pay the £500 per month which sis still more that what the CMS says is the correct amount, but this is still not enough for her. She won’t stop us seeing the children, as she only cares for them a few hours a day and enjoys having her evenings free with her partner.

My main worry is whether there is any legal loophole that would force my husband to keep paying that higher sum just to maintain her lifestyle?

OP posts:
Howdymostgratefil · 30/06/2026 00:37

Omg OP, you must be banging your head on the wall at some of these responses. I think you sound like a wonderful step parent and DH sounds like a great Dad. He should definitely give up work and be a stay at home Dad if your finances allow and ex can go and sort herself out. She isn't parenting them and DH has been giving her money for herself basically and for breakfast for the kids. Fuck giving her 500 quid a month, tell her you've changed your mind. Nothing she can do about it.
People on here are such hypocrites.

BruFord · 30/06/2026 00:53

The call ended with her threatening court.

@donewiththistakemeaway She can seek legal advice if she wishes, but given what you've said, it's not going to get her anywhere. In fact, she could be ordered to pay maintenance to your DH as the children want to live mainly with you (and already do)!

SueblueNZ · 30/06/2026 01:09

I think the OP has given us full details and honesty, and has the patience of a saint - towards the lazy, despicable ex and the bitchy members on this thread who cannot or will not read.
OP, you said you had offered her $500 a month so cannot now rescind that offer. You certainly can and should! All the more reason to go to court to get the financials sorted, as in cancelled.

FullLondonEye · 30/06/2026 07:15

WhistPie · 29/06/2026 22:24

It was sarcasm 🙄

Yes, I know. You're obviously not my father. It is however exactly what he would say and has said (and worse) and not as sarcasm because unfortunately he - and there are still so many others too - genuinely do think like that.

ExasperatedIs · 30/06/2026 08:57

She can’t just ‘take you to court’ 😂 Also she probably should be paying him maintenance now, but then again if she has no job she won’t be able to pay it. She should get of her arse now and sort her life out. I can’t believe she’s got a free house too!!!

WhistPie · 30/06/2026 09:42

FullLondonEye · 30/06/2026 07:15

Yes, I know. You're obviously not my father. It is however exactly what he would say and has said (and worse) and not as sarcasm because unfortunately he - and there are still so many others too - genuinely do think like that.

Ok, sorry! 😉

TealDoors · 30/06/2026 10:22

donewiththistakemeaway · 29/06/2026 21:34

We talked through the new routine, and the kids were laughing and saying “ so nothing would change then “They wanted to tell their mum straight away, but we agreed their dad should speak to her first.

He called to suggest a flexible arrangement — the children can stay here and visit her whenever she’s free. He didn’t mention money, but she brought it up immediately. He asked to leave finances aside for a few months while everyone settles in (which seems fair)

She reacted angrily, insulted me, accused me of flaunting my tits to get what I want and accused us of acting out of spite, and said the other children aren’t “real siblings”. The call ended with her threatening court.

Edited

So you found out what you already knew - her kids are cash cows to her and nothing more.

Stick to your guns, and let her take you to court if she wants (she won’t).

Don’t give her any more money. She can downsize if she doesn’t want to get a job.

Conniebygaslight · 30/06/2026 10:50

You and your DH sound brilliant parents OP. I have no idea what some of the posters on here are thinking.

WiddlinDiddlin · 30/06/2026 11:10

She is batshit.

I would be dying to respond:

'Donewiththis and her tits have reconsidered the generous offer of £500 a month. Have the day you deserve'.

I mean it wouldn't be helpful but I would really really want to.

I assume the step kids are well aware what she is like!

NotAnotherScarf · 30/06/2026 11:11

Sartre · 29/06/2026 10:42

You don’t have to pay obviously and unless she’s sick or disabled she should be working but I do think it’s a bit shitty of your DH to quit work and subsequently stop paying any CM at all. I realise he’s offered 50:50 child care instead but that only works if the children really want that set up.

Edited

But isn't it shitty that she hasn't worked in all that time. He's been contributing to everything over and above what he should be paying. He warned her a year ago .

What would your view be if he became ill and suddenly couldn't work

mcmuffin22 · 30/06/2026 11:30

I would just say to her 'we have taken legal advice and there is no child maintenance to pay'. May sure the CMS clarifies that this is the case of course. Then ignore her. What can she do?

BruceAndNosh · 30/06/2026 13:03

Frankly, if you decide not to claim maintenance from the ex and generously let her keep the Child Benefit, she should count herself lucky. Is she going to scream at HMRC when that stops when child reaches 18?

banmusk · 30/06/2026 13:04

Next time this mad woman threatens legal action just say, bring it on!

Lightuptheroom · 30/06/2026 16:34

Your income has no bearing on child maintenance
If she's claiming universal credit etc , child maintenance isn't included in calculations.
Legal aid is only available now for documented domestic violence cases which have to be fully documented with the authorities etc. Legal aid as was no longer exists for family court cases.
He needs to get an assessment done by CMS, though that will just give a minimal amount he needs to pay.

Londonrach1 · 30/06/2026 16:43

Don't pay anything to her. Its you husband only who pays and as children are almost 50:50 and the age they are can they stay at yours all the time do ex partner can go back to work

thepariscrimefiles · 30/06/2026 17:03

Credittocress · 29/06/2026 17:47

I have read the full thread. But these poor kids now have both parents choosing not to work. It seems to me the husband has taken the view “I’ve had enough of my ex taking the piss so what’s good for the goose is good for the gander” but actually there’s kids stuck in the middle of this mess.

It seems sad we’re going to the lowest common denominator when children are involved.

FFS OP's DH has given up work to look after all the kids so that OP can concentrate on developing her career. He's worked in a physically demanding job for over 30 years, has gifted a full-paid off house to his ex partner and overpaid child maintenance to his ex by £1200 per month for nine years.

The kids spent most of their time with OP and their dad, eating all their meals there and only going to their mum's to sleep so to allow her to claim maintenace which is based on the number of nights they spent with her. I bet that now they will vote with their feet and spend all their time with OP and their dad.

Daleksatemyshed · 30/06/2026 18:54

It's quite bizarre really, his Ex is an educated woman but she seems to have no idea of the realities of the law, she thinks because your DH has been generous for the DC sake that he has an obligation to her as well. Let her take you to court, better still your DH should go to law and offically take custody of his DC full time, they seem to live with you full time in all respects that matter

sunshinetimes · 01/07/2026 10:01

How are things @donewiththistakemeaway?

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