Complete Guide to De Facto Relationships in Australia

What qualifies as a de facto relationship under Australian law?

The Family Law Act 1975, which is the governing legislation over family law in Australia, defines a de facto relationship in Section 4AA.

A de facto relationship is a domestic relationship between two adults – including both opposite-sex and same-sex couples – who are not legally married.

This arrangement is also described as living together on a “genuine domestic basis”.

There is no clear, one size fits all definition of genuine domestic basis, however, some factors that could influence this include how long you’ve lived together, whether you share finances or if one person is financially reliant on the other, and if you have any children together.

What qualifies as a de facto relationship in Australia is the same in each state and territory, however, there are differences in the way de facto relationships can be registered in each state, as well as differences in how de facto legal matters like parenting disputes and property matters may be resolved in Western Australia.

Are same-sex de facto relationships recognised in Australia?

Yes.

The Family Law Act 1975 specifically includes that de facto relationships can be between two people of the same sex as per section 4AA.

Changes to Australian Federal laws that were introduced in 2009 regarding the rights of same-sex couples saw the recognition of same-sex de facto relationships.

What is the process for registering a de facto relationship in Australia?

Registering a de facto relationship can be done online and by providing supporting documentation which is usually identification information.

It’s important to note that you can register a de facto relationship in every state and territory of Australia except for Western Australia and Northern Territory.

The below links will take you to the relevant state authorities for relationship registration:

• Australian Capital Territory (ACT) – Civil Partnership Registration
• New South Wales (NSW) – Relationship Register
• Queensland (QLD) – Civil Partnership Registration
• South Australia (SA) – Relationship Register
• Tasmania (TAS) – Significant Relationship Register
• Victoria (VIC) – Domestic Relationship Register

Before registering a relationship, if you’re unsure of anything or wish to know how this could impact your situation, you can always seek legal advice from a family law expert.

Do de facto couples have the same legal rights as married couples?

A couple in a genuine de facto relationship have essentially equal rights and responsibilities as married couples in Australia.

This includes claims that relate to family law matters, like property settlements, financial support and parenting arrangements.

The main difference when it comes to de facto relationships versus marriages in Australia is that you need to prove the existence of the de facto relationship if it is not registered, whereas the marriage is proven by a marriage certificate.

This is why understanding your de facto status matters – it directly affects your ability to access important legal protections.

For example, if your relationship ends, being recognised as a de facto couple allows you to pursue a property settlement, seek spousal maintenance, and divide superannuation.

If you’re applying for a partner visa, your de facto status is central to your application.

And when it comes to estate planning, your entitlements to your partner’s superannuation death benefits or their estate upon death can depend entirely on whether your relationship is legally recognised.

In short, the legal rights are there – but you may need to take steps to ensure your relationship can be proven when it counts.

How long do two people need to live together to be considered in a de facto relationship?

There is a common belief that a couple needs to live together for a set period of time to be considered in a de facto relationship.

This is not necessarily true as a variety of factors can influence the status of a de facto relationship.

However, it’s important to note that the Family Law Act will not usually apply unless the couple has been living together for at least two years or if there is a child of the relationship.

What about relationships shorter than two years?

If your relationship lasted less than two years, you don’t have children together, and the relationship is not registered, the Family Court generally does not have the power to make property orders or hear a property claim.

This is sometimes referred to as a short-term de facto relationship.

However, there is an exception.

The Court may agree to hear a claim if you or your partner made significant financial or non-financial contributions to the relationship and it would cause a serious injustice if you were prevented from making a property claim.

For example, if one partner gave up their career to support the household during a short relationship and the other partner benefited significantly, the Court may consider this an exceptional circumstance.

Can a de facto relationship exist if the couple is not living together?

While we mentioned above that the Act doesn’t usually apply unless the couple has been living together for two years and the definition of a de facto relationship involves the couple living together on a genuine domestic basis, it’s important to understand that it doesn’t necessarily mean living together on a full-time basis.

Living together on a genuine domestic basis can be applied in a more holistic manner and includes how the couple have merged their lives and if there is a mutual intention to share a life together.

Factors such as living together half or less than half of the time, as well as the existence of a sexual relationship, financial dependence and parenting can all play a part.

A couple that is simply dating causally for a long period of time is unlikely to be recognised as a de facto relationship.

Can a de facto relationship be legally recognised if one or both partners are still legally married to someone else?

If you’re in a de facto relationship but you or your partner are still legally married, it’s still possible that you’re in a de facto relationship that will be recognised legally.

When a married couple ends their relationship, while a divorce is a common outcome, it’s also quite common for people to separate and not formally end their marriage. This could be due to a lot of reasons including just simply not wanting to complete the process.

This can cause complications if the de facto relationship ends and you wish to make a claim for a property settlement, and we recommend seeking legal advice if you find yourself in this situation.

If you or your de facto partner are married to someone else and you wish to marry one another, then the married party will need to get divorced, otherwise, the married party could be charged with the offence of bigamy. Learn more about bigamy here.

How does a de facto relationship affect government benefits and entitlements, like Centrelink payments?

Being in a de facto relationship can have an impact on your eligibility for and/or payment amount if you receive government benefits such as various payments from Centrelink.

If you do receive these types of payments as part of the registration for the payment type, it is likely that you will need to advise your relationship status.

If you’re found to be in a relationship and have not disclosed this information, it could result in you being required to repay the benefits you have received.

What evidence can be used to prove a de facto relationship?

The factors that define a de facto relationship – such as shared finances, cohabitation, and mutual commitment – are outlined earlier in this guide.

But when it comes to actually demonstrating those factors, you’ll need supporting evidence that demonstrates the genuine nature of your relationship.

Courts and other bodies don’t rely on a single factor; instead, they look at the overall picture.

Some of the types of evidence that can help establish your de facto relationship include:

• Joint financial records such as shared bank accounts, joint credit cards, or evidence that you split bills and household expenses together
• Shared property arrangements like a joint lease, mortgage documents, or utility accounts in both names
• Photographs of you and your partner at family gatherings, holidays, celebrations, and everyday life
• Travel records such as flight bookings, hotel reservations, or holiday itineraries made together
• Communication records including messages, emails, or social media posts that reflect your relationship
• Statutory declarations or affidavits from family members, friends, or colleagues who can speak to the nature of your relationship from an outside perspective

When gathering evidence, it helps to keep things organised.

You might create separate folders for financial records, living arrangements, social evidence, and third-party statements.

It’s also a good idea to ensure your documents consistently reflect your relationship timeline.

As a general rule, more evidence is better than less, so hold on to anything that could be relevant, even if it seems minor on its own.

What can you do if your de facto relationship is disputed?

Sometimes, the existence of a de facto relationship may not be immediately accepted. This can happen in a number of situations – for example, during a property settlement where one partner disputes the relationship to avoid financial obligations, or in immigration matters where authorities require further proof that the relationship is genuine. Disputes can also arise with third parties, such as family members or the executor of a will, when legal entitlements depend on your de facto status.

If your de facto relationship is being challenged, here are some steps to consider:

• Seek legal advice – A family lawyer can assess your situation, explain your rights, and help you understand the best path forward.
• Strengthen your evidence – If your existing evidence isn’t sufficient, you may need to gather additional records of shared finances, living arrangements, or statements from people who can confirm your relationship.
• Consider mediation – If the dispute is between you and your former partner, such as during a property settlement, mediation can provide a structured environment to work through disagreements without going to court.
• Apply to the Court – If mediation doesn’t resolve things, or if the dispute involves a government body like immigration, you may need to file a court application. A judge will review the evidence and determine whether your relationship meets the legal criteria.
• Prepare for a hearing – Going to court can feel overwhelming, but with proper preparation and the guidance of a family lawyer, you can present your case clearly and effectively.

What happens if a de facto partner has children from a previous relationship – does a de facto partner have any rights or responsibilities?

If your de facto partner (or you) has children from a previous relationship, you may be able to play an important role in that child’s life however there are some important things that you must be aware of.

Every relationship and family dynamic is unique, and though you’re in a relationship with that child’s parent, it doesn’t automatically mean you have parental responsibility, which means that you won’t have a legal say in certain aspects of the child’s life.

Parental responsibility is something that could be granted through an agreement or court order, however, if the child’s other biological parent is alive, it is unlikely.

When it comes to custody rights and visitation, the most important thing is that the best interests of the child are considered and looked after.

It’s usually encouraged that a child has a relationship with both of their parents, however, it’s not uncommon for a de facto partner to be considered and included in parenting arrangements.

If you wish to play a hands-on parenting role in your de facto partner’s child’s life, we recommend seeking legal advice on child arrangements that may be able to be made through parenting plans and consent orders, though this is truly dependent on the unique circumstances of your situation.

Can a de facto partner be recognised as a legal parent of a child born during the relationship?

Yes, if a child is born to the de facto partners, then the de facto partners will both be legal parents of that child.

The responsibilities of the parents of a child are not dependent on whether the parents were married or not.

It is the same for the rights of a child, it doesn’t matter if their parents were married or not at the time of their birth.

The child has the right to be cared for, protected from harm and to have a meaningful relationship with both parents.

If the child is from a previous relationship, then the de facto partner is not a legal parent, unless in circumstances where they have adopted the child.

How is parental responsibility determined for children in de facto relationships?

Parental responsibility in de facto relationships is determined in the same way as it is for married couples – by considering the best interests of the child.

Biological parents have automatic parental responsibility, regardless of their relationship status.

In many cases, both biological parents share equal parental responsibility. However, if a de facto partner has a significant and ongoing relationship with the child, they may also be granted parental responsibility.

Can a de facto partner adopt their partner’s child from a previous relationship?

Yes, it is possible for a de facto partner to adopt their partner’s child from a previous relationship, however, adoption is not a simple process and definitely requires legal advice.

Adoption is a legal process that establishes a permanent and legal parent-child relationship between the child and the adoptive parent.

To be able to proceed with adoption, certain criteria and procedures must be met and adoption laws may vary between different states and territories.

Adoption is a significant legal step and should be approached with careful consideration.

Seeking legal advice from professional family lawyers who specialise in adoption is highly recommended.

Do de facto partners have the same rights and obligations as couples who were married when it comes to child support?

Child support is not dependent on whether the parents who had the child were married, in a de facto relationship, or not in a relationship at all, when the child was conceived.

Providing for a child financially is the duty of the biological parents of the child.

A person who starts a de facto relationship with a person who already has children does not have a legal obligation to support those children except in special circumstances.

De facto relationships don’t just raise questions about parenting – they can also have a significant impact on your finances, property, and estate planning.

Below, we answer some of the most common financial questions for de facto couples in Australia.

Can a de facto partner be held responsible for their partner’s debts?

Generally, a de facto partner is not automatically responsible for debts that were incurred solely by their partner. If your partner took out a personal loan or credit card debt in their own name, that obligation belongs to them.

However, there are circumstances where you could become liable.

For example, if you and your partner took out a joint loan together – such as a joint mortgage or a shared credit card – then you are both responsible for that debt. The same applies if you acted as a guarantor for your partner’s loan.

It’s also important to understand that when a de facto relationship ends and a property settlement claim is made, the debts and liabilities of both partners – whether separate or joint – are typically included in the overall asset pool.

This means that even debts in one partner’s name may be factored into how assets are divided.

The court considers the complete financial picture when determining what is fair.

Do de facto partners have rights to each other’s superannuation?

In a de facto relationship, your super is generally treated as your own during the relationship. However, things change when the relationship ends.

If a property settlement is claimed after separation, each partner’s superannuation is likely to be included in the overall asset pool because it is considered property under Australian family law.

This means that super can potentially be split between the parties, just as it can when a married couple separates.

During the relationship, a partner can also nominate their de facto partner as a beneficiary for any death benefits associated with their super fund. If your relationship is registered, this can make it easier for the super fund to recognise your entitlement if a claim needs to be made.

Can a de facto partner inherit from their deceased partner’s estate?

In Australia, a de facto partner can potentially inherit from their deceased partner’s estate, but it is not an automatic entitlement. What happens depends on several factors, including whether a valid will exists and the nature of your relationship.

If your partner left a valid will that names you as a beneficiary, you can inherit according to the terms of that will, just like any other named beneficiary.

If your partner died without leaving a will – which is known as dying intestate – an administrator will be appointed to distribute the estate.

In most states and territories, the surviving de facto partner is likely to inherit some or all of the estate, provided the relationship can be proven.

If the deceased had children, the de facto partner will typically receive a portion of the estate, with the remainder going to the children.

If your partner left a will but did not adequately provide for you, you may still have the option to make a claim against the estate.

This is done through what’s known as a family provision application, where you can ask the court to consider whether you should receive a share or a greater share of the estate.

Can a de facto partner contest a will?

Yes, it is possible for a de facto partner to contest a will in Australia if they were not included as a beneficiary or if they believe they have not been adequately provided for.

Australian law provides for eligible persons – including de facto partners – to make a family provision claim. To do so, you would generally need to establish valid grounds, such as demonstrating that:

• You were in a genuine de facto relationship with the deceased at the time of their death
• You were financially dependent on the deceased, or the deceased had a moral obligation to make provision for you
• The will does not adequately provide for your proper maintenance, education, or advancement in life

Contesting a will is a complex legal process and the outcome depends on the unique circumstances of each case. Being able to prove your de facto relationship – for example, by showing proof of registration – is a significant part of this process.

If your de facto relationship has ended or you’re considering separation, you may have questions about the process and your entitlements.

Here are the most common questions we’re asked about de facto break ups.

How do you formally end a de facto relationship?

Unlike a marriage, there is no formal legal process required to end a de facto relationship.

You don’t need to apply for a divorce or file any paperwork with a court.

The relationship is typically considered to have ended when both partners have mutually agreed that the relationship is over, or when one partner has clearly communicated that the relationship has ended.

However, while the relationship itself may end informally, there are important legal matters that may still need to be resolved.

If you and your former partner share property, assets, debts, or children, you will need to make arrangements regarding :

• The division of property and assets
• Parenting arrangements for any children
• Any claims for financial support or spousal maintenance

These arrangements can be reached through informal discussions, or with the assistance of mediation or dispute resolution services.

There are also options to formalise your arrangements through binding financial agreements or consent orders.

How is property divided when a de facto relationship ends?

When a de facto relationship ends, the former partners have the opportunity to make a claim on the property and assets of the relationship.

This process works in a very similar way to how property is divided when a married couple separates.

First, it helps to understand what “property” includes under family law. Property is a broad term and can cover:

• Bank accounts and savings
• Real estate (including the family home)
• Shares and other investments
• Business assets and interests
• Personal property, including vehicles
• Debts and liabilities
• Superannuation

The parties to a de facto relationship can come to an agreement on how they will divide their property and assets privately.

If they are unable to come to an agreement, they can apply for a property settlement through the court.

When the court is involved, it will generally follow a four-step process:

• Identify and value all property – including any property held by either partner before the relationship began and any property acquired after separation
• Assess the contributions made by each partner, including both financial contributions (such as income and assets brought into the relationship) and non-financial contributions (such as caring for children or maintaining the home)
• Consider the future needs of each partner – including factors like age, health, earning capacity, and the care of any children
• Determine whether the proposed division is fair and equitable to both parties

Important : there is a two-year time limit. A claim for a de facto property settlement must be made within two years of the date of separation. It may be possible to seek permission from the court to make a claim after this period, but permission is not always granted.

Are de facto partners entitled to spousal maintenance after separation?

De facto partners may be entitled to spousal maintenance – also known as financial support – from their former partner after separation.

However, it is not an automatic entitlement.

Spousal maintenance is generally available where one partner is unable to adequately support themselves financially following the end of the relationship, and the other partner has the capacity to provide that support.

Factors the court may consider include:

• Each partner’s income, assets, and financial resources
• Each partner’s earning capacity and ability to work
• Whether one partner has caring responsibilities for children that limit their ability to earn an income
• The age and health of each partner
• The standard of living that was reasonable during the relationship

An application for spousal maintenance can be made in a similar way to how married couples seek financial support after divorce. Learn more about Spousal Maintenance here.

Whether you’re currently in a de facto relationship or planning for the future, there are legal steps you can take to protect your interests.

How can de facto partners protect their assets?

One of the most effective ways for de facto couples to protect their assets and financial interests is by entering into a binding financial agreement (BFA).

A BFA allows you and your partner to set out in advance how your assets, property, financial matters, and liabilities would be handled if the relationship were to end.

The key things to know about binding financial agreements for de facto couples:

• A BFA can be made before a relationship begins, during the relationship, or even after it has ended
• The agreement can cover a wide range of financial matters, including property, savings, superannuation, debts, and spousal maintenance
• Before a BFA can be entered into, both parties must receive independent legal advice from separate lawyers – this is a legal requirement
• A properly executed BFA can help avoid lengthy and costly court proceedings if the relationship breaks down

Binding financial agreements are similar to what many people refer to as a “prenup” for married couples, and they offer the same type of forward-looking financial protection for de facto partners.

It’s worth noting that if a BFA is not properly executed – for example, if the legal advice requirements aren’t met – it can be challenged and potentially set aside by a court.

This is why getting expert legal advice is essential when preparing a BFA.