Discovering that a spouse has been unfaithful is painful enough without immediately having to think about houses, pensions and money. Yet that is often where the mind goes next: surely the person who caused the marriage to end cannot still be entitled to half of everything?
The legal answer can feel surprisingly detached from the emotional reality. In England and Wales, a divorce settlement is not used to reward fidelity or punish an affair. That does not mean a cheating spouse automatically receives half. It means the court asks different questions: what property is matrimonial, what each person needs, what resources are available and how any children will be housed and supported.
After 25 years in legal practice, I know that the law’s idea of fairness and an ordinary human sense of fairness do not always line up. This is one of those subjects. The clearest way to understand it is to separate the affair, the divorce itself and the financial settlement. They may feel inseparable, but the law treats them as three different things.
Quick answer: Does a cheating spouse still get half?
Adultery alone will almost never change a divorce settlement in England and Wales. A spouse who has cheated does not lose their financial claims, but neither are they automatically entitled to half of everything. Depending on the matrimonial assets, each person’s needs, their income and earning capacity, pensions and the needs of any children, the outcome may be an equal division—or one spouse may receive more or less than half.
Is adultery still a ground for divorce?
No. For divorce applications made in England and Wales since 6 April 2022, neither spouse has to prove adultery, unreasonable behaviour or any other “fact”. One or both spouses instead provide a statement that the marriage has broken down irretrievably. The change was introduced by the Divorce, Dissolution and Separation Act 2020 and is usually described as no-fault divorce.
The affair therefore does not have to be proved or set out in the divorce application. My guide to applying for divorce in England and Wales explains the current process.
It is equally important to understand that obtaining the divorce does not, by itself, divide the couple’s finances. The divorce ends the marriage; a separate financial agreement or court order deals with property, savings, pensions, maintenance and other financial claims.
Does adultery affect a divorce settlement?
In almost every case, no. The court is concerned with producing a fair financial outcome, not deciding who was morally responsible for the marriage ending.
This is not merely a convenient summary. In AAZ v BBZ, the High Court stated expressly that adultery is irrelevant to the amount of financial provision ordered and does not amount to conduct that it would be inequitable to disregard. The judgment can be read on the Judiciary website.
That can be difficult to accept when an affair has caused enormous hurt or upheaval. But a financial remedy is not compensation for betrayal. The faithful spouse does not receive a larger share simply because they were faithful, and the unfaithful spouse is not deprived of a home, pension provision or maintenance simply because they cheated.
How the court decides what is fair
If a couple cannot agree, the court applies section 25 of the Matrimonial Causes Act 1973. There is no fixed formula capable of producing the answer in every marriage. The court considers all the circumstances, giving first consideration to the welfare of any child of the family under 18.
The section 25 factors
The statutory factors include:
- each spouse’s income, earning capacity, property and other financial resources;
- their present and foreseeable financial needs, obligations and responsibilities;
- the standard of living enjoyed by the family before the marriage broke down;
- the age of each spouse and the length of the marriage;
- any physical or mental disability;
- the contributions each person made or is likely to make, including caring for the home and family;
- conduct, but only where it would be inequitable to disregard it; and
- the value of any benefit, often a pension benefit, lost because of the divorce.
Financial and non-financial contributions are not ranked. Earning the household income does not automatically count for more than caring for children or running the home.
Sharing, needs and compensation
Three ideas help explain how the court approaches fairness: sharing, needs and, much more rarely, compensation. They were developed in cases including Miller v Miller; McFarlane v McFarlane.
The sharing principle reflects marriage as a partnership of equals. Matrimonial property will normally be shared equally unless there is a good reason to depart from equality. Needs can require a different outcome, particularly where the available money will not provide two homes of comparable value or one spouse has the main day-to-day care of children. Compensation may sometimes address a significant, relationship-generated economic disadvantage, but successful compensation claims are rare.
The familiar phrase “50/50 is the starting point” therefore needs some care. In White v White, the House of Lords rejected a legal presumption that everything must be divided equally, while requiring proposed outcomes to be checked against the yardstick of equality. More recently, the Supreme Court has confirmed that equal sharing is the normal starting position for matrimonial property—not necessarily every asset owned by either spouse.
My wider guide to how assets are divided in a divorce settlement explains these principles in more detail.
Does “half” mean half of everything?
No. A distinction may have to be drawn between matrimonial and non-matrimonial property.
Matrimonial property broadly means assets produced by the marriage partnership: for example, earnings, savings and property accumulated during the marriage. It usually makes no difference whose name appears on the account, title or investment. The family home will commonly be treated as central to the marriage and the parties’ needs, even if it was originally bought by only one spouse.
Non-matrimonial property typically includes assets brought into the marriage and inheritances or gifts received from outside it. In Standish v Standish, the Supreme Court confirmed in 2025 that the sharing principle applies to matrimonial property, not non-matrimonial property. It also recognised that the way an asset is treated over time can sometimes turn it into matrimonial property.
That does not make inherited or pre-marital property untouchable. If the matrimonial assets are insufficient to meet reasonable housing or income needs, the court can still use non-matrimonial property to meet those needs. All assets must be disclosed before arguments can be made about whether they should be shared.
For particular types of asset, see my guides to inheritance and divorce, pensions and divorce and business valuation on divorce.
Can a cheating spouse receive more than half?
Yes. A spouse who had the affair may receive more than half of the available capital if that is required to meet needs fairly. This might happen where they have the main care of young children, have substantially lower earning capacity or cannot otherwise obtain suitable housing.
That outcome is not a reward for cheating. It reflects the practical position after separation. The same reasoning can result in the faithful spouse receiving more than half if their needs are greater.
Many divorces are “needs cases”: there is not enough money to reproduce the former standard of living across two households. In those cases, the court is often dealing with the uncomfortable question of how to divide a shortfall, not a surplus. The Family Justice Council’s guide to sorting out finances on divorce provides useful official guidance and worked examples.
When can conduct affect the settlement?
Section 25 does permit the court to consider conduct where it would be inequitable to disregard it. The threshold is deliberately very high. Ordinary marital unhappiness, blame and infidelity do not come close.
Personal misconduct
Only exceptionally serious personal conduct is likely to affect the financial award. Reported examples have involved grave criminal behaviour or conduct causing severe and lasting financial consequences. An affair—even a long-running one—is not enough.
Financial misconduct
The position can be different where money rather than infidelity is the real issue. Fraud, heavy gambling, reckless spending or deliberate attempts to put assets beyond the other spouse’s reach may be relevant if they have significantly reduced the resources available.
Spending connected with an affair is not automatically added back into the matrimonial pot. Ordinary expenditure on meals, gifts or trips is unlikely to justify a separate conduct claim. Substantial transfers to a new partner, buying property for them or deliberately depleting savings may be different, particularly if the purpose or effect was to defeat the other spouse’s financial claims. Even then, the court looks at the scale, intention, available assets and overall fairness.
There is also an important distinction between marital conduct and conduct during the proceedings. Hiding assets, giving misleading disclosure or refusing to comply with court orders can lead to adverse findings, costs consequences and, in serious cases, an order being set aside. The duty to give full and frank financial disclosure applies to both spouses, regardless of the affair.
Does a new partner affect the settlement?
Potentially, but because of the new household’s financial reality—not because the relationship began as an affair.
If a spouse is living with a new partner, shared housing and household costs may reduce that spouse’s needs. The new partner’s income is not simply added to the spouse’s income, and the new partner does not become responsible for supporting the former marriage. The court instead considers what contribution is realistically being made to the household and whether the new relationship appears settled.
Cohabitation does not automatically end spousal maintenance. Remarriage by the person receiving spousal maintenance does ordinarily bring those periodical payments to an end. Neither event retrospectively punishes the affair or changes the identity of the matrimonial property.
What happens to the house, pensions and arrangements for children?
The family home
The fact that one spouse cheated does not determine who remains in the family home or how its equity is divided. The court considers ownership, mortgage capacity, each person’s housing needs and, particularly, the need for suitable accommodation for children. Possible outcomes include sale, transfer to one spouse, or postponing a sale for a period.
Pensions and other long-term assets
Pensions can be among the most valuable assets in a marriage, especially after a long relationship. Adultery does not prevent a pension sharing order. The court looks at the pension rights built up, each person’s future retirement needs and the overall distribution of capital and income. A pension should not be traded against the house casually: equal headline values can provide very different long-term benefits.
Businesses, investments and inherited assets are treated according to their source, value and role in meeting needs—not according to which spouse was unfaithful.
Children
In financial proceedings, the court gives first consideration to the welfare of any child of the family under 18. This commonly influences housing and income needs, but it does not create an automatic percentage split.
An affair also does not, by itself, determine where children live or how much time they spend with each parent. In child-arrangements cases, the child’s welfare is paramount. The circumstances of a new relationship become relevant only if they affect welfare—for example, because of a genuine safeguarding concern. My guide to child arrangements after divorce explains the separate legal test.
Can you agree that the cheating spouse will receive less?
Yes. A couple can negotiate an outcome which differs from what a judge might have ordered after a contested hearing. Sometimes a spouse who has had an affair agrees to take less because they feel guilty, want an early resolution or place particular value on retaining one asset. The court does not insist on exact equality where the overall agreement is fair.
Care is needed, however, when an agreement is reached in the immediate aftermath of discovering an affair. Shock, anger and guilt are poor substitutes for full financial disclosure. Both people should understand the assets, pensions, income and consequences before committing themselves.
An informal agreement—even one reached in mediation—is not enough to achieve financial finality. To make it legally binding, the terms normally need to be recorded in a consent order and approved by the court. The judge considers financial information supplied by both parties and can ask questions or decline to approve an order that appears unfair. The current process is explained in the official GOV.UK guidance on consent orders.
A final divorce order does not automatically dismiss future financial claims. Securing an appropriate financial order is what usually provides enforceability and, where suitable, a clean break.
Practical steps after discovering an affair
Do not make financial decisions purely in anger
It can be tempting to empty an account, stop payments or transfer assets before the other spouse can do so. Those steps may create immediate practical problems and can later be scrutinised by the court. Urgent protective action is sometimes necessary, but it should be proportionate and based on the actual financial risk.
Preserve financial information lawfully
Keep copies of documents to which you already have legitimate access, such as joint-account statements, mortgage information, tax returns and pension details. Do not hack passwords, impersonate your spouse or enter private accounts without authority. Evidence proving the affair will rarely help with the financial settlement; reliable evidence about the finances may be far more important.
Separate emotional justice from financial security
If there is one practical point I would emphasise, it is this: a settlement should protect your position for years to come, not simply express how you understandably feel today. That may mean pausing before accepting an apparently satisfying proposal and considering the long-term effect on housing, income and retirement.
Adultery and divorce settlements: Frequently asked questions
Will my spouse automatically get half if they cheated?
No. Cheating does not remove their financial claims, but there is no automatic right to half of every asset. The outcome depends on the matrimonial property, needs, resources and all the section 25 factors.
Can I refuse to give my cheating spouse anything?
You can make proposals in negotiation, but you cannot unilaterally extinguish your spouse’s claims. If agreement is impossible, the court can decide the financial outcome and make binding orders.
Does it matter who applies for the divorce?
No. Being the sole applicant, responding to the application or applying jointly does not determine either spouse’s financial entitlement.
Does adultery affect who pays the legal costs?
Not simply because the affair occurred. The general rule in financial remedy proceedings is that each person pays their own costs. The court can make a costs order because of litigation conduct—for example, failure to provide disclosure or comply with orders—but that is different from marital infidelity. The rule appears in Part 28 of the Family Procedure Rules.
Does an affair affect child arrangements?
Not on its own. Decisions about children are based on their welfare, not punishment of either parent. A new partner or the circumstances surrounding an affair matter only where they have a genuine effect on the child’s safety or wellbeing.
What if my spouse spent joint money on the affair?
Small or ordinary expenditure is unlikely to alter the settlement. If substantial sums were transferred, hidden or recklessly spent, the financial impact may be relevant. The proportionality of pursuing the issue should be considered carefully, because the legal cost of arguing about expenditure can exceed the amount in dispute.
What fairness means when a marriage ends badly
The law’s refusal to punish adultery can feel unsympathetic. In reality, it reflects the limited purpose of financial proceedings. A judge is not trying to rewrite the history of the marriage or put a price on hurt. The task is to divide available resources fairly and produce workable arrangements for two separate households.
That may leave a cheating spouse with half, more than half or less than half. The affair itself will rarely decide which. Matrimonial property, needs, children, income, pensions and the practical future will.
Last legally reviewed: 29 July 2026
This guide is based on general principles of English and Welsh law, is intended for informational purposes only, and does not constitute legal advice or establish a professional relationship.
