How to talk about money with your ex-partner without it turning into a fight

Why money conversations with an ex are so often the hardest ones

Money is consistently named the single biggest friction point between separated parents, ahead of contact arrangements or parenting style. A YouGov survey of 1,003 divorced UK adults, commissioned by Irwin Mitchell and Wright, Johnston & Mackenzie, found 25% of those with children named financial matters as their top co-parenting challenge, ahead of contact at 15% and parenting styles at 12%. The same survey found money was the biggest fear going into divorce, cited by 51%.

These conversations are rarely just about the number on the table. They carry fairness, unpaid caring work and old grievances, which is why a reasonable request can still land badly.

What child maintenance actually covers, and what it does not

Child maintenance covers a child's everyday living costs, not the extras that spark the most disagreement. The Child Maintenance Service calculates a basic rate as a percentage of gross weekly income: 12% for one child, 16% for two, 19% for three or more, on income between £200 and £800, per the Department for Work and Pensions' own guidance.

Most arrangements never reach a court. As of March 2026, the CMS managed 810,000 arrangements, 55% agreed privately as Direct Pay, 43% collected by the CMS itself, where compliance is patchy: only 54% of paying parents paid over 90% of what was due that quarter, leaving £26.3 million unpaid. Checking your guideline figure on GOV.UK's calculator gives something concrete to negotiate from, rather than instinct.

The costs maintenance doesn't cover, and how to agree them

School trips, football kit, the uniform that needs replacing every September, and the birthday present that always costs more than planned, sit outside the CMS calculation entirely, which is why they cause a disproportionate amount of the arguing.

Parents who manage this well agree a rough list at the start of each school year, and split it in a proportion that reflects both incomes rather than an automatic fifty-fifty. A short email confirming what was agreed saves relitigating the same conversation every September.

How to actually have the conversation

How you raise money matters almost as much as what you're asking for. Conversations that start mid-argument, over text, rarely go well. A regular time to discuss money, separate from day-to-day contact about the children, keeps requests from tangling up with unrelated tension.

Many separated parents find a dedicated co-parenting app, such as OurFamilyWizard or TalkingParents, genuinely useful, since messages are timestamped and tone stays neutral. Sticking to logistics, what is needed, by when, how much, gives an ex-partner far less to react to than a message that reopens the relationship itself.

From Lucy, co-founder of Welleness

I have sat with enough women, friends and Welleness members both, to know the money conversation with an ex is rarely about the money itself. It is about being taken seriously as a co-parent, in a relationship that has to keep functioning long after everything else has ended.

What I notice most is how much calmer these conversations get once someone actually knows the numbers, not guessed at, but the real figure, written down. It takes the emotion out of the opening exchange, even if the feelings underneath are still there.

If you are in the middle of this right now, be patient with yourself. Getting the tone right on a message about school shoes, while still grieving the relationship that produced the child who needs them, is genuinely difficult work.

What you can do now

Check the GOV.UK Child Maintenance calculator before your next money conversation, so you're working from the actual guideline figure rather than an assumption.

Set up a dedicated channel for money messages, an app or a separate email thread, so requests stop mixing with day-to-day contact about the children.

Before the next school term starts, send one message listing the specific costs coming up and propose a split, rather than raising each cost as a surprise.

FAQ

Does child maintenance cover school trips and uniform?

No. The CMS calculation covers everyday living costs only. Trips, clubs, uniform and birthdays need agreeing separately.

Can I ask my ex for more than the CMS calculator says?

Yes, via a private family-based arrangement above the statutory figure, but it isn't legally enforceable unless written into a consent order.

What if my ex won't reply to money messages?

Keep requests specific, in writing and time-stamped. If Direct Pay breaks down repeatedly, either parent can ask the CMS to collect payments instead.

Is a co-parenting app worth it instead of texting?

Many find it helps, since messages stay factual with a clear record, though a calm email thread works just as well.

Here is what one Welleness member said after completing her financial health check.

"WOW! I am blown away and actually really grateful. This landed at just the right time for me. I'm at an odd point, financially, definitely want to take more control, shitting myself about having taken a number of years out of investing in my pension and taking a hit to my income. So I'm really grateful to you for developing this because I think it is SO needed." Jude, Welleness user

If reading this has made you wonder where you actually stand, our free financial health check takes less than five minutes and gives a clear picture across six areas of your financial life. No judgement. No jargon. Just clarity.

This post is for informational purposes only and does not constitute financial advice. For guidance specific to your situation, speak to a regulated financial adviser.