Bad behaviour & divorce — does an affair affect the financial settlement?

We explore how adultery and other forms of misconduct fit into the current divorce framework and when behaviour affects the financial settlement.
We make the difference. Talk to us: 0333 004 4488 | hello@brabners.com
If you believe that you should receive a higher amount of child maintenance, you may have legal recourse.
Many people remain unaware that the child maintenance rules have changed to account for parents reducing their income for tax purposes and living mainly off capital assets.
Here, our family team explains when capital can be considered by the Child Maintenance Service (CMS).
When the resident parent applies to the CMS, an initial assessment is done on the basis of the paying parent’s gross income. The CMS uses their tax returns to calculate average weekly earnings for the most recent tax year. Any ‘unearned income’ (that from savings or investments), ‘overseas income’ or assets owned aren’t taken into account.
This allows for some wealthy parents to get away with paying little to no child maintenance.
The 2017 case Green v Adams highlighted the inadequacy of the child maintenance rules in this respect. The father had assets worth over £5m but declared no taxable income, aside from a small pension. This meant that a CMS calculation obliged him to pay only £7 child maintenance per week, despite being a millionaire. The judge in this case rightly labelled the state of the law at this time as “most disturbing”.
Regulatory changes in 2018 focused on how to calculate child maintenance in cases with ‘complex earnings’. The change aimed to help circumvent the issue of ‘capital rich, income poor’ non-resident parents falling through the cracks and paying the bare minimum rate of child maintenance where they have a low taxable income.
Since 2018, where the paying parent’s capital exceeds £31,250, a notional annual income of 8% of the value of their assets can now be ascribed for the purpose of child maintenance. Such assets include money, land (unless the land is the primary residence of the non-resident parent) and some stocks and shares. Where an asset is subject to a mortgage or charge, a deduction is made to the value for any amount owing. See a full list of the asset types that can and can’t be included.
It’s important to note that ‘notional income’ can only be taken into account if the resident parent applies for a variation of maintenance. The onus is therefore on the recipient of the child maintenance to apply to the CMS directly if they believe that the paying parent should be contributing a higher amount of child maintenance based on their capital wealth.
However, some experiences with the CMS haven’t always been easy — and there may be other ways around ensuring that a child’s financial needs are being met. Further financial claims can arise under Schedule 1 of the Children Act 1989.
If you need advice around your options for varying the amount of child maintenance you receive, talk to our award-winning family law team by completing the contact form below.
Loading form...

We explore how adultery and other forms of misconduct fit into the current divorce framework and when behaviour affects the financial settlement.

We explore how the courts approach trusts on divorce and outline the key considerations for dealing with them after separation.

We explore how decisions around schools are made, the processes available to help parents to reach agreement and the court’s approach when they can't.

We explore the process of valuing a business and reaching a financial settlement upon divorce or dissolution.

We explore how the courts approach parental contributions in divorce and the practical steps families may need to consider.

We explore how pensions are treated in divorce, from entitlement and valuation to division options.

We set out everything you need to know about financial orders — how they work, the different types and more.

We explain how and when a marriage can be annulled as well as how to know if a marriage is void or voidable.

We explore how financial remedy proceedings work, what the court takes into account and the steps involved.

We share some top tips to help families to co‑parent amicably and organise child contact arrangements during the festive period.

We're thrilled to have been commended in three separate categories in The Times Best Law Firms 2026.

For Good Divorce Week, we explore how emotional support and legal guidance work together to reduce conflict and uncertainty.

We explore the biological realities of menopause and the impact that it can have on divorce settlements and financial claims.

The importance of a Pension Sharing Order, the process for implementing one and the remedies available if one party fails to engage in that process.

NDAs are becoming more prevalent in divorce proceedings, especially for high-profile individuals or where sensitive information is concerned — but do you need one?

International divorce cases are highly complex and the choice of jurisdiction can make a significant difference to financial outcomes.

January and September are the most ‘popular’ months to begin divorce proceedings — we look at why and top tips for couples thinking of separation.

Divorce isn't an option until after 12 months — but alternatives like annulment, judicial separation and separation agreements are available.

A total of 41 lawyers have been promoted across the firm including Rachel James and Richard Rigg who have become part of our almost 100-strong partnership.

The Supreme Court has clarified the law surrounding when ‘non-matrimonial property’ can become ‘matrimonial property’.

It’s proposed that over 60 Family Court fees will be increasing from 1 April to support the running of the notoriously underfunded His Majesty’s Courts and Tribunals Service (HMCTS).

The President of the Family Division has released a toolkit to support family Judges when writing to children.

Here, Steven Appleton from our estate planning team and Amy Harris from our family law team explain the options available to family business owners, including sensible steps to take to secure your estate from future divorce or separation.

Mediation may not be suitable for every case. Our family law team explain 15 exemptions where court proceedings may be more appropriate.

In the realm of financial remedy proceedings following divorce, the duty of full and frank financial disclosure is a long-established principle.