Separating from a partner is rarely simple, but in Sydney’s high-stakes property market, the stakes are even higher for those who aren’t married. Unlike a marriage, where a certificate provides immediate legal standing, de facto partners often face a “threshold test” before they can even begin a property settlement.
If you are going through a de facto separation in Sydney, simply saying you were a couple isn’t enough. To protect your financial future, you must prove your relationship meets specific criteria under the Family Law Act 1975.
This guide breaks down the five critical elements you must establish to ensure your assets are protected and your legal rights are upheld.
See more: Why a Conveyancer Brisbane Matters for First-Home Buyers
What is a De Facto Relationship in NSW?
In New South Wales, a de facto relationship exists when two people who are not married or related by family live together as a couple on a “genuine domestic basis.” This applies to both same-sex and opposite-sex couples.
However, the law doesn’t automatically grant property rights the moment you move in together. To seek a court-ordered property division, you generally need to meet one of the “gateway” requirements:
- The relationship lasted at least two years.
- There is a child of the relationship.
- The relationship was officially registered in NSW.
- One party made substantial contributions, and a failure to make an order would result in serious injustice.
De Facto Separation in Sydney: 5 Things You Must Prove
To secure a financial settlement, the court looks beyond the emotional connection. You must provide evidence across these five pillars to prove a “genuine domestic basis” existed.
1. The Nature and Extent of Common Residence
Living under the same roof is the most common indicator of a de facto relationship. However, it isn’t always about whose name is on the deed.
- What to prove: That you shared a home and a “common life” within that home.
- Evidence: Joint lease agreements, utility bills in both names, or mail sent to both partners at the same Sydney address.
- Expert Tip: Even if you maintained separate residences (e.g., for work or study), you can still be considered de facto if you spent significant time together and shared domestic life.
2. Financial Interdependence and Support
The court wants to see how your lives were financially intertwined. This is often the most scrutinized area during a de facto separation in Sydney.
- What to prove: That you acted as a single economic unit rather than two individuals splitting a bill.
- Evidence: Joint bank accounts, shared credit cards, or one partner paying the other’s car loan or health insurance.
- Real-World Example: If you paid the rent while your partner paid for all groceries and travel, this demonstrates a degree of financial interdependence.
3. Ownership and Use of Property
It doesn’t matter if an asset is only in one person’s name. The court looks at how assets were acquired and used during the relationship.
- What to prove: Mutual commitment to the acquisition of assets.
- Evidence: Using one partner’s savings to renovate a house owned by the other, or buying a car that both partners used daily.

4. The Degree of Mutual Commitment to a Shared Life
This is the “emotional and intentional” pillar. It differentiates a long-term dating arrangement from a de facto partnership.
- What to prove: An intention to build a future together.
- Evidence: Being listed as a “spouse” on tax returns, being each other’s emergency contact, or naming each other as beneficiaries in a Will or Superannuation fund.
5. Public Aspects and Reputation
How did the Sydney community perceive you? If you told the world you were single but claimed to be de facto in private, your legal case may weaken.
- What to prove: That family, friends, and government agencies recognized you as a couple.
- Evidence: Joint invitations to weddings, travel records (booking hotels as a couple), and statutory declarations from friends or neighbors.
Proving a De Facto Relationship: An Evidence Checklist
To protect your financial future, start gathering these documents as soon as possible. Separation lawyers in Sydney recommend organizing evidence chronologically to show the progression of the relationship.
| Category | Recommended Evidence |
| Living Arrangements | Lease agreements, bond lodgments, home insurance policies. |
| Finances | Joint bank statements, evidence of money transfers between accounts. |
| Government | Centrelink letters, Medicare cards (if on the same card), ATO records. |
| Social | Photos of holidays, flight bookings, invites addressed to “The [Name] Family.” |
| Future Planning | Wills, Life Insurance policies naming the partner as beneficiary. |
Why You Need a Separation Lawyer in Sydney
De facto relationship laws in NSW are complex because there is no “separation certificate.” The date of separation is critical because you have exactly two years from that date to file for a property settlement.
If you miss this window, you may lose your right to claim your fair share of assets, including the family home and superannuation. A specialist lawyer can help:
- Define the Separation Date: Especially if you are “separated under one roof.”
- Verify De Facto Status: Ensuring you meet the “gateway” criteria.
- Asset Valuation: Identifying what is “relationship property” versus “initial contributions.”
Common Mistakes to Avoid During Separation
- Waiting too long: The two-year clock starts the day you separate. Don’t wait until the 23rd month to seek legal advice.
- Hiding Assets: Full and frank disclosure is a legal requirement. Hiding a crypto wallet or a secret savings account can lead to heavy penalties.
- Assuming 50/50 is Automatic: Unlike some international jurisdictions, Australia does not have an automatic 50/50 split. The division is based on contributions (financial and non-financial) and future needs.
Frequently Asked Questions
What if we lived together for less than two years?
You can still be considered de facto if you have a child together or if you made significant financial contributions to your partner’s property.
Can I be de facto if my partner is still legally married to someone else?
Yes. Under the Family Law Act, a person can be in a de facto relationship even if they are legally married to another person or in another de facto relationship.
Does “Separated Under One Roof” count?
Yes, but it is harder to prove. You will need to show a change in the “nature of the household,” such as sleeping in separate rooms, not cooking for each other, and notifying family/friends of the split.
How do I protect my superannuation?
In a de facto separation in Sydney, superannuation is treated as property. It can be split between partners, but you will need a formal court order or a Binding Financial Agreement (BFA) to do so.
What is a Binding Financial Agreement (BFA)?
Often called a “prenup,” a BFA is a legal document that outlines how assets will be split if you separate. It is the best way to avoid a court battle.
Conclusion: Securing Your Financial Future
Understanding de facto separation in Sydney is the first step toward protecting what you’ve worked hard to build. By proving the nature of your residence, your financial interdependence, and your mutual commitment, you position yourself for a fair and equitable property settlement.
Don’t leave your future to chance. If you are navigating the end of a relationship, consult with separation lawyers in Sydney who specialize in de facto relationship laws in NSW. The right evidence and legal strategy today can save you years of financial stress tomorrow.
Internal Linking Suggestions:
- Property Settlement Checklist for Sydney Couples
- Understanding Spousal Maintenance in NSW
- How to Draft a Binding Financial Agreement
Authoritative References:
- Family Law Act 1975 (Commonwealth)
- Federal Circuit and Family Court of Australia (FCFCOA)