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Mumsnet has not checked the qualifications of anyone posting here. If you need help urgently or expert advice, please see our domestic violence webguide and/or relationships webguide. Many Mumsnetters experiencing domestic abuse have found this thread helpful: Listen up, everybody

ExH still claiming child benefit after eldest moved in full time

14 replies

Ncforthis2267 · 30/03/2026 10:38

So I have 2 school age children with my ex. Seperated 8 years now.

We've been 5050 since day 1, which has mostly worked fine. We agreed no maintenance, but as I earned twice as much as him he would claim the child benefit. In return we based our 5050 schedule to suit my work pattern better.

Since November my 13yo has moved in with me full time and no longer sees her dad due to issues with his partner. Ex still claims the child benefit for her. Should I claim it now instead? While I don't need it, it would come in handy as I'm doing all the feeding and driving now for our eldest.

My worry is I'll open a can of worms with maintenance. As in he will put in a cms claim on our youngest, as I now earn significantly more than him, as revenge. Obviously I could then put a cms claim in for our eldest but I would get very little from him (lives mostly on benefits).

I've worked the sums, and if I claim the child benefit, and he claims cms, and I counter claim I'll actually end up paying him more money than I'm receiving extra by claiming CB in the first place 🤦‍♂️

Is it fraudulent for him to continue claiming CB? Should I just leave it?

OP posts:
BashfulClam · 30/03/2026 10:43

Is the youngest still 50/50 as I believe you can’t claim maintenance if the child is 50/50

SatelliteSpaceman · 30/03/2026 10:46

CMS is there to support the person who earns less - so yes he should be claiming it from you
Child benefit is there to support the child so yes you should be claiming it

if you end up worse off then so be it

VimtoDemon · 30/03/2026 10:48

I would try just having an open conversation with him and see what he says 🤷🤷

Ncforthis2267 · 30/03/2026 10:51

BashfulClam · 30/03/2026 10:43

Is the youngest still 50/50 as I believe you can’t claim maintenance if the child is 50/50

Yes, still 5050. I believe cms is still applicable where there is a large income disparity.

OP posts:
INX · 30/03/2026 10:52

I've worked the sums, and if I claim the child benefit, and he claims cms, and I counter claim I'll actually end up paying him more money than I'm receiving extra by claiming CB in the first place

Then so be it.

If you're worried he's committing fraud, that should have nothing to do with whether you pay the amount you should for your DC.

But I agree with the PP who said you should just talk to him about it.

Ncforthis2267 · 30/03/2026 10:54

VimtoDemon · 30/03/2026 10:48

I would try just having an open conversation with him and see what he says 🤷🤷

I would like to, but he is an extremely difficult person to have a conversation with. Even benign everyday things like arranging a dentist appointment earn me a torrent of abuse.

OP posts:
user946372 · 30/03/2026 10:55

I would just leave it as you are financially better off with the current set up.

TooPoor4PandaPooTea · 30/03/2026 10:56

Ncforthis2267 · 30/03/2026 10:51

Yes, still 5050. I believe cms is still applicable where there is a large income disparity.

Provided your 50/50 is documented and he isn't doing all the appointments etc. Income is irrelevant in a true 50/50. It is fraud for him to claim CB for a child he doesn’t even see. You are resident parent, put in a claim.

beAsensible1 · 30/03/2026 11:00

I mean if you earn significantly more is the pay of worth the effort.

its a fraud and he will be found out eventually so you could leave it and let it sort itself out. It seems counterintuitive to me for not very much money

caringcarer · 30/03/2026 11:00

I'd leave it but tell him he should contribute to eldest child's clothing from child support. Would he agree to eldest DC having money as an allowance for clothes?

beAsensible1 · 30/03/2026 11:24

Ncforthis2267 · 30/03/2026 10:54

I would like to, but he is an extremely difficult person to have a conversation with. Even benign everyday things like arranging a dentist appointment earn me a torrent of abuse.

So then leave it. Not worth the headache for £26 a week. From someone who is broke and on benefits and doing 50/50.

Hayley1256 · 30/03/2026 11:35

Would you be able to receive the child benefit or would you be over the threshold?

ImImmortalNowBabyDoll · 30/03/2026 12:15

Ncforthis2267 · 30/03/2026 10:51

Yes, still 5050. I believe cms is still applicable where there is a large income disparity.

If the income disparity is big enough for maintenance to be due you won't be able to keep any CB anyway.

LovesLabradors · 30/03/2026 12:30

I'd let this lie tbh OP - there have been a couple of threads recently about 50/50, CB, & CM and they never seem to end well. You could do a rival CB claim for the child now living with you, but it would probably result in endless stress & legal stuff/tribunals etc. You'd be opening a big can of worms.

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