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I think my ex is lying about his income to pay less child maintenance

4 replies

VikSoph · 08/07/2025 19:27

When my ex-husband and I first separated, we had a private agreement for child maintenance. However, he was very inconsistent with payments—sometimes I would go months without receiving anything at all, and when he did pay, it was rarely the full amount we had agreed upon.
Eventually, I decided to apply for child maintenance. This has been the arrangement for several years now, although he’s never been happy about it. He frequently asks me to cancel the CMS arrangement and return to a private agreement, promising that he’ll stick to regular payments. But based on past experiences, I don’t feel comfortable doing this—I’ve been let down too many times and no longer trust that he would follow through.

Over the years, he has repeatedly tried to reduce his CMS payments by providing false or misleading information. For example, he’s claimed that he has our son full-time, even though he only sees him once a fortnight. Fortunately, this was easily disproved.
His most recent complaint was about having to drive to pick up our son for weekend visits—despite the fact that he chose to move over 50 miles away to live with his new partner. In this case, CMS actually sided with him, and as a result I now pay him £730 a year to cover his travel costs.

Today, I received a notification that his income has been reassessed, and my child maintenance will be reduced from £230 to £75 a month. He’s self-employed, and according to the new information he gave CMS, his income has dropped from £600 a week to £200 a week.
What makes this difficult to believe is his current lifestyle: He lives in a large house with his new partner and their three children. His partner works the occasional cleaning shift but not full-time. They don’t pay for childcare, as her parents provide regular help. He drives an expensive car, and based on everything I know, he doesn’t appear to be struggling financially.

What concerns me most is that he works for a company where his dad is the director. I suspect this makes it easier for him to underreport his income or have it structured in a way that reduces his obligations on paper.
I can’t prove any of this—my suspicions are based on his past behaviour and my knowledge of his lifestyle—but my gut instinct is that he’s not being honest about his earnings. And unfortunately, my gut has rarely been wrong when it comes to him.

I’m planning to dispute this review, but I’m unsure how to go about proving income manipulation in a self-employed case— especially when there’s family involvement in the business. Has anyone been through something similar or have advice on how to raise this with CMS effectively?
Any tips or shared experiences would be really appreciated.

OP posts:
Rhubarbandgooseburycrumble · 08/07/2025 19:36

730 a month! I’d be disputing that for a start! That’s a huge amount in fuel. When my ex did this all they did was knock a little bit off of the maintenance.

VikSoph · 08/07/2025 20:02

Rhubarbandgooseburycrumble · 08/07/2025 19:36

730 a month! I’d be disputing that for a start! That’s a huge amount in fuel. When my ex did this all they did was knock a little bit off of the maintenance.

Oh gosh no, that would absolutely bankrupt me!
£730 a year for petrol. I realised once you commented that’s a weird way for me to word it, it’s just that’s the way they’ve written it on the statement 😂

OP posts:
Sparkle123r · 09/07/2025 17:19

Why do you pay for petrol? If he has applied for a variation for contact costs, the annual amount will be deducted from his gross salary before the child maintenance is calculated

Do you mean he has been awarded £730 for contact costs? In reality that would only reduce your maintenance by probably a few pounds a week.

Is he has been self employed for a while, it will be based on the self assesment return declared to HMRC. You need to request a mandatory reconsideration, and then take it to appeal of you disagree

givingitupok · 09/07/2025 17:49

My ex did this. Was earning 45+k a year and only declaring 15k. I reported it so many times. Then he got furloughed. It was the best moment of my life. He promptly declared more (though not all) after this point (probably out of fear of being furloughed again!)

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