If you are separating from someone who twists every conversation, rewrites what actually happened, and leaves you second-guessing your own memory, you are in the right place. You are not imagining it, and you are not weak for finding this hard.
Let me give you the plain answer first, no legal waffle. You do not beat a narcissist at their game. You stop playing it. Family law is not decided on who looks calmest in the room or who tells the better story. It is decided on evidence, built over time. That one shift, from winning the argument to protecting the outcome, changes how you get through this.
This page covers what to prepare before you make a move, the communication method that actually works, the eight tactics I see again and again and how to counter each one, how the money and the kids are really decided, and how to stay safe. Divorce itself is only the legal end of the marriage, which in Australia you apply for after twelve months of separation. That is the divorce process, and it is separate from sorting out your money and your parenting arrangements.
You do not need a diagnosis, you need evidence
You might be desperate for someone official to confirm what you already know, that your ex is a narcissist. Here is the honest truth: you do not need a clinical diagnosis, and chasing one usually burns energy you cannot spare. A court is not going to brand your ex with a personality disorder, and it does not need to.
What matters legally is behaviour and its effect. The effect on the children. The effect on financial disclosure. The effect on whether the two of you can co-operate at all. That gets proved by a clear, consistent record over time, not by a label. So we stay on what someone actually does, and we write it down.
What you need before you start
Before you tip off the other side that you are getting advice or planning to leave, get a few things in order. Think of this as your quiet head start.
- Secure your own finances. Open an account in your sole name, know the passwords you are entitled to, and understand what money comes in and goes out.
- Take copies of the key financial documents while you still can: bank statements, tax returns, superannuation statements, loan and credit card records, and anything about a business or trust.
- Start a dated log. Every incident, every difficult message, with the date and what happened. Facts, not feelings.
- Line up one support person. One steady friend or family member who knows what is going on.
- Get advice before you act, not after. The first move sets the tone for everything that follows.
One thing people miss: disclosure cuts both ways. You will both have to lay out your full financial position, so keeping your own clean records early only helps you. That is the duty of disclosure, and it is now written into the law itself.
The narcissist playbook, and how to counter each move
Over years of high-conflict matters, the same moves come up again and again. None of them are random. Once you can name the tactic, it loses most of its power, because you stop reacting and start countering. Here are the eight I see most, and what I tell clients to do about each.
- The charm offensive. They present as the calm, reasonable one, often to everyone but you. Do not try to out-perform them. The court runs on evidence, not on who seems nicer. Document clearly and consistently, and let the record speak for you.
- Gaslighting and rewriting reality. They insist things happened differently until you doubt yourself. Stop arguing about whose version is true, and build the record instead. I tell clients to stop correcting them in the moment and get deliberately boring.
When every message and every changeover is logged, their version stops mattering. Yours is written down.The only way to get through this is to really desensitise yourself and do your best to think of yourself as a store of information, like a beige filing cabinet.
- Delay and exhaust. This is the slow grind, and it is deliberate.
The counter is structure. Put your deadlines and follow-ups in writing, and lean into the court’s timetable rather than their chaos, because in court, non-compliance finally carries consequences.I see it happen all the time: people dragging out negotiations, going silent for weeks, not answering the most basic of questions or requests for disclosure. Then they start demanding all sorts of documents that they don’t actually need from you, they start putting in really crazy timelines, because they’re just trying to be as uncooperative as possible. And there’s a reason as to why they do this, and that’s because exhaustion makes people want to give up.
- The smear campaign. They tell friends, family, sometimes even the kids, a version where you are the problem. Do not take the bait, and do not try to win the crowd back. A court decides on evidence, not on a popularity contest.
- Litigation as control. Every email, application and demand can be a way to keep control of you. Triage each one. Does this affect the kids? Does it breach an order? Does it need a legal response right now? If not, it is noise, and noise does not need an answer.
- DARVO. DARVO stands for Deny, Attack, and Reverse Victim and Offender. You raise a genuine concern, and suddenly you are the aggressor and they are the wounded party. Do not defend your character. Answer the issue in front of you, calmly, and move on.
- The fog of information. Long, accusatory emails designed to overwhelm you and bury the one thing that actually needs a reply. Do not answer all of it. Pull out what genuinely needs a response, answer that in a line or two, and leave the rest.
- Using the kids as leverage. This is the one that does the most damage.
Keep the children out of the adult conflict, full stop. In parenting, the court has one question, and it is not who is angrier. It is what is in the child’s best interests.The most common thing I see with narcissists is turning kids into messengers. It’s getting them involved with a conflict. It’s interrogating them, asking them questions when they’re at home. It’s making them feel guilty every time that they do something.
The communication method: BIFF (and grey rock)
Most of the damage in a high-conflict separation happens in the back-and-forth. So change how you communicate. The method I give clients is BIFF: brief, informative, friendly, firm.
Instead of “you’re a liar and you always do this”, you write: “Confirming changeover is 4pm at the usual spot. Thanks.” There is no emotion to grab and no bait to take. Brief, so there is less to twist. Informative, so the facts are clear. Friendly, so you never look like the difficult one on paper. Firm, so you are not reopening things already decided.
Alongside BIFF, there is grey rock. You become as flat and uninteresting as a grey rock, and you stop feeding the reaction they are hunting for. The two work together: BIFF is what you write, grey rock is how much of yourself you show.
Money and the duty of disclosure
You are entitled to see the real picture of what you jointly own, not the version your ex wants you to see. And that entitlement has teeth. You both have to give full and frank financial disclosure, and since 10 June 2025 that duty is written directly into the Family Law Act, not just tucked away in the court rules (the duty of disclosure, sections 71B for married couples and 90RI for de facto couples). It covers the lot: bank accounts, superannuation, company and trust records, the assets people quietly hope you will forget about.
If your ex stonewalls, you are not stuck. There are formal requests you can make, and court steps with real consequences for someone who hides assets. That full financial picture is what a fair property settlement is built on.
Parenting: what the court actually decides on
When there are children, the court decides parenting on one test: the best interests of the child (section 60CC of the Family Law Act). Since the reforms that commenced on 6 May 2024, the old presumption of equal shared parental responsibility has been removed, so do not assume anything is automatic.
Your ex’s behaviour matters, but only in how it affects the children’s safety and needs, and only when it is proved by evidence. Whether they are narcissists is not the question. Whether the kids are safe, stable and cared for is. So keep building the same clear record, and keep the children out of the conflict. The practical parenting arrangements follow from that, not from who wins the argument.
Staying safe: family violence and protection orders
If any of this has left you feeling unsafe, deal with that first. It does not wait for the divorce.
Family violence is not only physical. Coercive control and economic abuse, the slow, controlling behaviour that wears a person down, are family violence under the law (section 4AB of the Family Law Act, and the court’s family violence material explains what that covers). If you feel unsafe, you can apply for an AVO, an apprehended violence order, through the Local Court in New South Wales. It runs on its own track, separately and straight away.
Should you try mediation with a narcissist?
Usually yes, and often you have to try, unless there are valid reasons not to attend, such as safety concerns and imbalances of power. Family dispute resolution is the default first step, and in most cases you must attempt it before you can file a parenting application. If it is not appropriate, or you try and it does not resolve things, you are issued a section 60I certificate that lets you take the matter to court.
It is not one-size-fits-all. Sometimes mediation works even with a difficult ex. Sometimes, where there is family violence or where someone is weaponising delay, an exemption or the structure of court is the safer path. That is not a failure. It is the right tool for that situation. I say this to clients who dread the courtroom:
I know everybody says when they come in, “I don’t want to go to court. Court is where I don’t want to be.” And I agree, it’s not a good place and it can cost a lot of money. But if you have a situation where somebody is doing that exhaust technique, you need the structure of the court process, where there are orders in place, a timetable is being set by a judge, and non-compliance means consequences.
That structure, orders, a timetable, and real consequences, is often exactly what a stonewaller cannot cope with.
Using their behaviour as evidence
So can you use your ex’s behaviour against them? Yes, but not the way people imagine. It does not work by proving they are a bad person. It works by showing, consistently and in writing, how their behaviour affects the children and whether they are meeting their obligations, like disclosure.
That is why the dated log matters. That is why the BIFF messages matter. Document consistently, stay focused on the effect on the kids and on the money, and do not get dragged into making it about their character. The evidence does the work the argument never could.
The one mental shift
If you take one thing from this page, take this. Stop trying to win the arguments. Focus on the outcomes.
You cannot control your ex. You have tried, and it does not work, because the conflict is the point for them. What you can control is your own process: the records you keep, the way you communicate, and how much space you let the conflict take up in your life.
You are not weak for finding this hard. This is genuinely one of the toughest things a person can go through. But you do not have to work it out alone. If you want a clear, honest picture of where you stand and what to do next, book a free discovery call with me and my team. No pressure, no judgment, just straight advice on your options. Call 1300 614 732 or send us a message.
Frequently Asked Questions
How to divorce a narcissist in Australia: where do you start?
You do not beat them, you stop playing their game. Prepare quietly first: secure your finances, copy the key documents, and start a dated log. Communicate briefly and factually, insist on full financial disclosure, and keep the children out of the conflict. The court decides on evidence, not on who performs best.
What is the BIFF method for communicating with a narcissist?
BIFF stands for brief, informative, friendly and firm. Instead of reacting to a provocation, you reply with only the facts that matter, in a line or two, with no emotion to grab onto. It keeps you looking reasonable on paper and gives a high-conflict ex nothing to twist or escalate.
Can I use my ex's narcissistic behaviour against them in court?
Not as a label, unless they have a known NPD diagnosis, but yes as evidence. A court will not brand your ex a narcissist. What matters is how their behaviour affects the children’s safety and whether they meet obligations like financial disclosure, proved by a clear, consistent record over time. Document everything, because the evidence does the work.
Do I have to do mediation with a narcissistic ex?
Not always. While family dispute resolution is the default first step and is normally required before you file a parenting application, there are some exclusions. If it is not appropriate, or it does not resolve things, you are issued a section 60I certificate to go to court. Where there is family violence, an exemption may apply.
What is the duty of disclosure, and does it apply to my ex?
Yes, it applies to both of you. The duty of disclosure requires full and frank disclosure of your complete financial position: bank accounts, superannuation, company and trust records. Since 10 June 2025 it is written into the Family Law Act itself. If your ex hides assets, formal requests and court consequences follow.
How does the court decide parenting when the other parent is a narcissist?
In the best interests of the child, under section 60CC of the Family Law Act. Since the May 2024 reforms there is no longer a presumption of equal shared parental responsibility. The other parent’s behaviour counts only where it affects the child’s safety and needs, and only when it is proved by evidence.