If you are divorcing a narcissist, you may be wondering whether their narcissistic behaviour actually matters in family law — and whether you need to prove that they are a narcissist.
The short answer is that the label itself is generally far less important than the behaviour.
The Family Court is not ordinarily concerned with determining whether your former partner is a “narcissist”. What may be highly relevant, however, is evidence of the behaviours you have experienced — particularly where there has been a pattern of coercive or controlling behaviour, intimidation, emotional or psychological abuse, financial abuse, threats or other family violence.
This distinction is important. You do not necessarily need to prove that your former partner has Narcissistic Personality Disorder for their behaviour to be relevant to your family law matter.
Instead, the focus should generally be on what happened, whether there was a pattern of behaviour, the evidence available to establish that behaviour, and the impact it has had on you and your children.
Table of Contents
Does It Matter If My Ex is a Narcissist in Family Law?
Clients sometimes come to us after months or even years of trying to understand their former partner’s behaviour. They may describe their former partner as narcissistic, controlling, manipulative or emotionally abusive.
Those descriptions can be important in understanding what a person has experienced. However, in family law proceedings, simply establishing that someone has narcissistic traits does not determine the outcome.
If you are divorcing a narcissist / someone you believe has narcissistic traits, the more important questions are likely to be:
✓ What behaviour has actually occurred?
✓ Is there a pattern of coercion or control?
✓ Has there been family violence?
✓ What impact has the behaviour had on the children?
✓ Is there an ongoing risk following separation?
✓ What evidence is available?
In other words, rather than concentrating solely on proving who your former partner is, it can be more useful to concentrate on proving what they have done.
If you are at an earlier stage of separating and divorcing a narcissist, and want more practical information about what you may experience when leaving a narcissistic or high-conflict partner, read our Legal Guide to Divorcing a Narcissist and Narcissistic Abuse.
Narcissistic Abuse and Coercive Control: Are They the Same Thing?
Not necessarily.
“Narcissistic abuse” is a term commonly used to describe patterns of manipulative, controlling or emotionally harmful behaviour associated with someone perceived to have narcissistic traits.
Coercive control has a more specific legal significance.
Under the Family Law Act 1975, family violence includes violent, threatening or other behaviour that coerces or controls a family member or causes them to be fearful.
Family violence can therefore extend well beyond physical violence.
Depending on the circumstances, relevant behaviour can include repeated derogatory taunts, stalking, controlling finances, withholding necessary financial support, preventing connections with family or friends, damaging property and other coercive or controlling behaviour.
A person does not need to have been physically assaulted for their experiences to potentially constitute family violence.
So while behaviour someone describes as “narcissistic abuse” may also amount to coercive control or family violence, the terms are not interchangeable.
For a more detailed explanation, read our Coercive Control: Separation & Family Law Guide.
What Narcissistic Behaviours Actually Matter to the Family Court?
The Court is concerned with evidence and legally relevant behaviour, rather than personality labels.
Depending on the individual circumstances, behaviours that may be relevant can include:
✓ intimidation, threats or behaviour designed to cause fear;
✓ repeated belittling, humiliation or derogatory comments;
✓ controlling access to money or creating financial dependence;
✓ isolating a person from family, friends or support networks;
✓ excessive monitoring, surveillance or stalking;
✓ controlling where someone goes or who they communicate with;
✓ using the children to exert pressure or control;
✓ exposing children to family violence;
✓ conduct that undermines a child’s relationship with a parent;
✓ threats relating to children, finances or court proceedings; and
✓ coercive or controlling behaviour that continues after separation.
The significance of any behaviour will depend on the circumstances. Not every unpleasant, selfish, difficult or high-conflict behaviour constitutes family violence.
That distinction matters.
Do I Need to Prove My Ex Has Narcissistic Personality Disorder?
Generally, your family law case should not depend upon you diagnosing your former partner.
Narcissistic Personality Disorder is a clinical diagnosis. A person’s former spouse or partner saying that they are a narcissist is not, by itself, evidence that they have a personality disorder.
Even where a person has a diagnosed mental health condition, the diagnosis itself does not automatically determine parenting arrangements or other family law outcomes.
The Court’s focus is on the evidence relevant to the issues it is required to determine.
This is why trying to prove “my ex is a narcissist” can sometimes distract from a more important task:
identifying the specific behaviour, documenting it appropriately and explaining why it is relevant.
How Do You Prove Narcissistic Abuse or Coercive Control?
Family violence and coercive control can be difficult to prove because the behaviour may occur privately and may consist of a pattern of seemingly small incidents rather than one obvious event.
Evidence will depend upon the circumstances but may potentially include:
✓ text messages and emails;
✓ photographs;
✓ financial and banking records;
✓ police records;
✓ domestic violence orders;
✓ medical or counselling records, where relevant and admissible;
✓ contemporaneous notes or diary entries;
✓ evidence from witnesses;
✓ social media or other electronic communications; and
✓ other records that demonstrate a pattern of behaviour over time.
The important point is often the pattern.
One message viewed in isolation may appear relatively insignificant. A series of communications, financial transactions or incidents over time may tell a very different story.
We have written separately about practical steps that can be taken to preserve evidence and how evidence of these behaviours may become relevant in parenting proceedings. See our How to Fight for Custody With a Narcissist guide.
Text messages can also become important evidence in family law proceedings. Our article Can Text Messages Be Used as Evidence in Family Court? explains how electronic communications may be used and why preserving the complete conversation can be important.
How Can Narcissistic Abuse Affect Parenting Arrangements?
This is where the behaviour can become particularly important.
When making parenting orders, the Court is required to regard the best interests of the child as the paramount consideration.
The Court considers matters including what arrangements would promote the safety of the child and each person who has care of the child, including safety from being subjected or exposed to family violence, abuse, neglect or other harm.
A child does not necessarily have to be the direct target of family violence to be affected by it.
The Family Law Act recognises that a child may be exposed to family violence by seeing or hearing it or otherwise experiencing its effects.
Accordingly, where behaviour described as narcissistic abuse also involves family violence, coercive control or creates risks for a child or parent, it may be highly relevant to parenting arrangements.
The issue is not:
“Is this parent a narcissist?”
The more useful questions may be:
“What has this parent done?”
“How has that behaviour affected the child or other parent?”
“Is the behaviour continuing?”
“What arrangements will best promote the child’s safety and wellbeing?”
Can a Narcissist Still Have Custody or Spend Time With the Children?
There is no rule that a parent described as narcissistic will or will not spend time with their children. Nor does describing a parent as a narcissist, without more, determine what parenting arrangements will be made.
The Court’s focus is on the best interests of the particular child, including the safety of the child and each person who has care of the child.
Importantly, the impact of coercive or controlling behaviour can be more nuanced than an allegation that a parent presents a direct physical risk to a child.
In some families, the concern may be that parenting arrangements provide an opportunity for ongoing control of the other parent after separation. This might occur through repeated conflict about changeovers, excessive communications, constant challenges to parenting decisions, withholding information, using the children to communicate or exert pressure, or creating ongoing instability around parenting arrangements.
The effect of that behaviour on the other parent may also be relevant. Where ongoing coercive or controlling behaviour significantly affects a parent’s psychological wellbeing or capacity to parent, there can be an indirect impact on the child, even where the behaviour is not directed towards the child.
A child may also be affected by being exposed to ongoing conflict, observing a parent’s distress, feeling caught between their parents, being used as a messenger or source of information, or feeling pressure concerning their relationship with either parent.
This does not mean that every difficult co-parenting relationship, hostile communication or disagreement amounts to family violence. The Court must consider the particular evidence and circumstances of each family.
The relevant questions when divorcing a narcissist may therefore extend beyond:
“Is the child physically safe while with this parent?”
They may also include:
- Is there an ongoing pattern of coercive or controlling behaviour?
- Are the parenting arrangements being used as a means of continuing that control?
- What impact is that behaviour having on the other parent and their capacity to care for the child?
- What impact is the conflict or behaviour having on the child?
- What parenting arrangements would best promote the child’s safety, stability and wellbeing?
What If Narcissistic or Controlling Behaviour Continues After Separation?
Separating from and divorcing a narcissist, does not necessarily bring coercive or controlling behaviour to an end. In some cases, separation removes many of the ways in which one person previously exercised control, but parenting arrangements can provide an ongoing point of contact through which that behaviour continues.
The behaviour may change in form. It might involve excessive or intimidating communications, repeated disputes about relatively minor parenting issues, conflict at changeovers, withholding information about the children, undermining parenting decisions, making unreasonable demands, using the children to communicate or obtain information, or repeatedly creating instability around parenting arrangements.
The significance of this behaviour in family law extends beyond the label given to it.
The Impact on the Other Parent Can Matter
A parent does not necessarily have to pose a direct physical risk to a child for their behaviour to be relevant to parenting arrangements.
Ongoing coercive or controlling behaviour can have a significant effect on the other parent’s psychological and emotional wellbeing. Where that parent is responsible for much of the child’s day-to-day care, the consequences can extend beyond the adult relationship.
For example, persistent conflict, intimidation or control may leave a parent anxious, distressed or constantly responding to disputes. It may affect their ability to provide the child with the stability and emotional availability they otherwise could.
The impact on the parent can therefore have an indirect impact on the child.
Children may also experience the effects themselves. They may observe a parent’s distress, become anxious about changeovers, feel caught between their parents, be exposed to ongoing conflict or feel responsible for carrying information between households.
What Can This Mean for Parenting Orders?
When determining parenting arrangements, the Court is required to consider the best interests of the child, including the safety of the child and each person who has care of the child.
Where coercive or controlling behaviour is ongoing, an important question may therefore be whether the proposed parenting arrangements themselves provide opportunities for that behaviour to continue.
Depending on the circumstances and the evidence, the Court may need to consider whether parenting orders should provide greater structure and minimise opportunities for ongoing conflict or control.
This might include consideration of:
- how and when the parents communicate;
- whether communication should occur through a parenting app or another defined method;
- how changeovers occur;
- how information about the children is exchanged;
- how decisions concerning the children are made;
- whether orders need to be particularly clear and specific to reduce opportunities for repeated dispute;
- whether direct interaction between the parents can be minimised; and
- in more serious circumstances, whether restrictions or safeguards concerning a parent’s time with the child are necessary.
The appropriate orders will depend upon the circumstances of the individual family and the evidence before the Court.
The question is therefore not simply whether the behaviour can be labelled “narcissistic” or “post-separation abuse”.
The more important questions are:
Is the behaviour continuing?
How is it affecting the other parent?
How is that impact affecting the child?
Are the current parenting arrangements facilitating the continuation of coercion or control?
And what parenting arrangements are actually in this child’s best interests?
Can Narcissistic Abuse Affect a Property Settlement?
Yes, potentially.
The important issue is again not whether your former partner can be labelled a narcissist, but whether the behaviour amounts to family violence and what effect that behaviour has had on you financially and otherwise.
Changes to the Family Law Act 1975 that commenced in June 2025 expressly recognise the relevance of family violence in property settlement proceedings. Where relevant, the Court may consider the effect of family violence on a party’s ability to make financial and non-financial contributions, as well as its economic effect on their current and future circumstances.
This can be particularly relevant where narcissistic or coercive behaviour has involved financial abuse — for example, controlling access to money, preventing or interfering with employment, creating or withholding access to financial information, accumulating liabilities, controlling assets or continuing financial control after separation.
The consequences may also be less obvious. Prolonged coercive or controlling behaviour may affect a person’s psychological wellbeing, capacity to work, ability to care for children or ability to make contributions during or after the relationship.
However, experiencing narcissistic abuse or family violence does not automatically result in a greater property settlement. The nature of the behaviour, its effect and the available evidence will be important.
We examine this issue in much greater detail, including the evidence that may be required and relevant case examples, in our article Coercive Control & Property Settlement.
What If My Ex Appears Charming and Reasonable to Everyone Else?
This is one of the concerns we regularly hear from people who describe having experienced coercive control or narcissistic abuse.
They may tell us:
“Everyone thinks they are wonderful.”
“Nobody sees what happens behind closed doors.”
“They are completely different around other people.”
Family violence does not have to occur publicly to be relevant.
Nor does a person need every allegation to have been witnessed by somebody else before it can be raised.
However, allegations made in family law proceedings need to be approached carefully and supported by the best available evidence.
This is why contemporaneous documentation can be important, particularly where the alleged behaviour consists of an ongoing pattern rather than isolated incidents.
What Should I Focus on Instead of Proving They Are a Narcissist?
If you are divorcing a narcissist or someone you believe to be narcissistic, the following shift in focus can be useful:
Instead of: “How do I prove my ex is a narcissist?”
Consider: “What behaviour do I need to establish?”
Instead of: “How do I make the Court understand what they are really like?”
Consider: “What evidence demonstrates what has occurred?”
Instead of: “Will the Court punish them for being a narcissist?”
Consider: “How is this behaviour legally relevant to my children, safety, finances or property settlement?”
The Key Takeaway when divorcing a narcissist
Labels don’t determine family law outcomes. Evidence and behaviour do.
If you are divorcing a narcissist, the behaviour you describe as narcissistic abuse involves coercion, control, fear, financial abuse, psychological abuse or other family violence, it may be highly relevant to your family law matter.
The important task is identifying the conduct that has occurred, understanding its legal significance and ensuring that relevant evidence is properly presented.
If you are divorcing a narcissist, or in legal terms, a coercive and controlling partner, and need advice about how their behaviour may affect your parenting or property matter, contact Barton Family Lawyers to arrange a confidential initial consultation.
