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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to think my ex should pay more child maintenance when he earns £720k a year?

462 replies

Pashpash24 · 13/08/2025 19:14

I’ll try to keep this as short as possible while giving some back story.

I was with my ex-partner for four years. We had a son together, but he walked out before he was born. He saw him a few times as a newborn, but I had asked that he didn’t bring his new partner. My son was six weeks old when he turned up at my door with her, even though I’d said it was too soon.

He took me to court saying she should be allowed to meet him. The court agreed it was too soon and suggested maybe when the baby was older.

Because of that, he told me he would never see his son again. I was devastated and said fine, she can meet him, because I didn’t want him to walk away. But he still refused and never saw him again.

For six years, he had no contact — no visits, no messages, nothing. The only thing he did was pay child maintenance. It was a decent amount (£1,277.50 a month), and I never asked for more.

He went on to have three more children with his now wife. I just got on with life until one day my son came out of school and asked, “I must have a dad, right?” I’d never told him about his father because I didn’t want him to feel abandoned.

When he started asking more questions, I texted his dad to say I was going to tell him the truth — I wasn’t going to raise him on a lie. I’d messaged over the years, even sent photos, and he’d read them on WhatsApp but never replied. So I didn’t expect a response this time either.

Surprisingly, he replied and said maybe it was time to meet. This was when my son was six (he’s now nearly nine). In the last three years, he’s probably met him in person about 10 times. He calls roughly once every 10 days, which I think is poor — it should’ve progressed a lot more by now.

Anyway, to the point. I recently logged into my Child Maintenance account after receiving an unusual notification. It showed his salary: £720,000 a year.

I’ve always been paid £1,277.50 a month because that’s what CMS caps it at. He could earn £1 million a week and I’d still receive that same amount — you have to go to court for any increase.

Would he be able to afford more? Absolutely. I know it’s a decent amount, but he only pays it because that’s the legal minimum CMS tells him to.

I’m self-employed and work part-time so my son can do after-school activities — he’s football mad and trains/plays four times a week. I’m essentially raising him alone; my dad moved 40 miles away, and I have no relationship with my mum. I rarely get a break, but that’s been the reality since the start.

I’ve never asked for an increase, but life is much more expensive now. £1,277 doesn’t go as far as it did six years ago, and £720,000 a year is a huge income.

To put it into perspective — CMS only calculates maintenance on a maximum salary of £156,000 a year. My ex earns over four times that, but I still only get the amount they’d set for £156k — just over 2% of his actual income. Unless I go to court for a “top-up order”, that’s all I’ll ever get.

AIBU to ask for more?

OP posts:
MynameisJune · 13/08/2025 19:38

Do you actually need the money op? As in are you financially struggling?

If the answer is no, then I’d speak to your ex about setting up an investment ISA for your son in your sons name and asking him to put money into that instead so that your son has money in the future for things like uni/house deposit etc. All things that ex’s other 3 kids will likely already have/get.

TheNightingalesStarling · 13/08/2025 19:39

I bet he spendsmore than that on his other children. Private school for example...

But its more than the vast majority gets.

AgentJohnson · 13/08/2025 19:40

I don’t know hat he does to earn that amount but given his attitude, there’s a good chance that he could do all sorts to get out of paying more and he could go as far as getting his current contribution reduced and cutting your son off completely.

In 9 years time he will stop paying CM and that loss of income can be quite brutal, if I were you I wouldn’t rely on CM. Ex paid CM for two of the 16 years he should have and I used it to pay for extras and saved the rest.

Do not underestimate the petty cruelty of an entitled twat.

iamnotalemon · 13/08/2025 19:40

I wonder if you ask for more support financially, he’ll then want more contact. Is that something you’re willing to do?

I do think you could also increase your hours at work but I expect that isn’t the preferred answer.

walkingismedicine · 13/08/2025 19:42

Suggesting a savings fund/ISA for your son is a great idea

CopperWhite · 13/08/2025 19:44

You receive more than enough to cover your ex’s share of your son’s costs. Your child is not there for you to profit from. You are being greedy.

Sdpbody · 13/08/2025 19:44

I would be asking him to max out your son’s JISA.

I would also be inclined to ask for private school fees to be paid.

Btowngirl · 13/08/2025 19:45

Based off what you’re saying, he earns 4 times what is taken into account, but he also has 4 children so it sounds fair to me? £1200 a month is a hell of a lot on top of your own earnings. I am of the mindset that I don’t rely on anyone financially though so I definitely wouldn’t be asking for more from a personal standpoint.

Bananafofana · 13/08/2025 19:45

its a shame you weren’t married before you got pregnant as you could have had a chunk of his assets to support your child as well as child maintenance. I guess this is the result and there’s not much you can do. I know friends who have split up from high earners (£2m pa banker types) but that was a marriage break up so the dc much better provided for (but again the CMS calculation element is fixed and tops out at the rate they’re using for you)

Btowngirl · 13/08/2025 19:46

MynameisJune · 13/08/2025 19:38

Do you actually need the money op? As in are you financially struggling?

If the answer is no, then I’d speak to your ex about setting up an investment ISA for your son in your sons name and asking him to put money into that instead so that your son has money in the future for things like uni/house deposit etc. All things that ex’s other 3 kids will likely already have/get.

This is a great idea.

Iamnotthe1 · 13/08/2025 19:48

You're not unreasonable to think that, given his income, he could pay more and you could always ask and take it further.

However, you are unreasonable to talk about that amount of money not going far and suggesting it's not a lot / enough. The average cost of raising a child from birth to 18 is just under £200k. Over that time period, your son's father will have paid you £275k, covering more than the average entire cost of raising the child and significantly more than the 'half' that he would, in theory, be responsible for.

Daleksatemyshed · 13/08/2025 19:49

You can go to court and ask for more but I'd just say one thing Op, after years of being ignored your DS finally has some contact with his DF, it's possible if you ask for more his DF might withdraw again in anger. What's more important to your DS, to have more material things or to see his DF? I'm not saying it's right but I'd test the waters first and see his DFs reaction before making a decision

chatgptsbestmate · 13/08/2025 19:49

If you can't afford to take ex to court to ask for more maintenance, then there's not much to say

You could ask ex to set up a stocks and shares ISA for son and max that out each year

Maybe work some more hours when you can, if you need more money?

FrippEnos · 13/08/2025 19:50

Bananafofana · 13/08/2025 19:45

its a shame you weren’t married before you got pregnant as you could have had a chunk of his assets to support your child as well as child maintenance. I guess this is the result and there’s not much you can do. I know friends who have split up from high earners (£2m pa banker types) but that was a marriage break up so the dc much better provided for (but again the CMS calculation element is fixed and tops out at the rate they’re using for you)

We don't know how much he earn't when they were a couple.

And I suspect that if the OP takes this to court the judge is likely to tell her to work full time before he adds anything to what the ex is paying. But IANAL.

TranceNation · 13/08/2025 19:52

"£1,277 (pcm) doesn’t go as far...."

Really?? That is very good money to get for maintenance per month for one child. How much are you actually looking for?

Bananafofana · 13/08/2025 19:55

IANAL? I am not a lawyer? I actually am a lawyer (not family though) so I guess I am IAALBNAFL. Just know a LOT of divorced high earners, and if he’s earning £720k now it’s likely it’s not a fluke and career progression was mapped out and fairly predictable a few years ago (have seen judges take probable future salary rises into account). But at any rate, all moot as they weren’t married so no settlement to renegotiate.

FrippEnos · 13/08/2025 19:56

Just another thought, but it would also be very difficult for the OP to argue for something like 'quality of life' when ex has never lived with the OP's DS.

Minnie798 · 13/08/2025 19:57

MynameisJune · 13/08/2025 19:38

Do you actually need the money op? As in are you financially struggling?

If the answer is no, then I’d speak to your ex about setting up an investment ISA for your son in your sons name and asking him to put money into that instead so that your son has money in the future for things like uni/house deposit etc. All things that ex’s other 3 kids will likely already have/get.

I think this is a good idea.

DrinkFeckArseBrick · 13/08/2025 19:58

Yanbu.

I usually hate the answers on these threads as you get loads of people saying 'that's loads of money, you should be grateful, I never saw a penny from my ex.'

But I think just over a grand a month is absolutely nothing when your take home is 34k. Its not even for example half a months nursery fees in London. It's what most people who are standard earners spend on their kid a month.

It's fundamentally unfair that your son has half siblings who will have trust funds, private education, amazing multiple long haul holidays, property bought for them, investments...and your son has nothing, because his dad can only be arsed to pay the legal minimum. Any decent parent should want to treat their children the same (even if it means saving for them / buying things instead of giving to the other parent)

Vintagenow · 13/08/2025 20:03

So he should be paying I think about 18% of his salary, although that would reduce to maybe 12 with further children. But he's actually paying 1.6%.
Maintenance will stop as soon as your son leaves school. If you want to put him through uni, driving lessons etc or be able to support him into adulthood then I would go to court and save the extra for when you'll really need it.

Nametobechanged · 13/08/2025 20:04

Absolutely take him to court, get £1300 pcm is a lot of money but what lifestyle are his other children enjoying?

Private schooling? World travel? Top class extra curricular activities?

He is your son’s father and he should be paying a realistic percentage of his salary towards his son’s life.

Aimtodobetter · 13/08/2025 20:05

I’m not a lawyer but I can’t see how you wouldn’t get a lot more with a top up order so i would go to him and make that point - maybe go to a lawyer for a brief consultation first and get them to give you a range of advice on what they would expect in your circumstances. Then be willing to negotiate less in exchange for retaining goodwill.

Oceangrey · 13/08/2025 20:06

Morally he should be paying more.
I would ask him as others have said to fund specific things. JISA, school, uni fund, whatever.

Coconutter24 · 13/08/2025 20:07

If he’s taking home around 33k a month the cms does seem low equally we don’t know his monthly outgoings.
Are you struggling financially that you need extra money? For one child’s living expenses £2500 should be more than enough a month

ThejoyofNC · 13/08/2025 20:08

What do you need more money for?

Your poor son wanted to get to know his dad who already has little time for him and you're risking him losing the scrap of a relationship he does have, out of greed?