To estimate buying someone out, subtract the home loan balance from the agreed property value, then apply the equity share agreed in your property settlement. The loan you need can be much larger than that payout: it may also need to cover the existing mortgage and costs, less any cash you contribute. A 50/50 split is an example, not an automatic legal entitlement.
We’ll cover the key steps, including preparing your finances, negotiating the buyout terms, and completing the legal and financial transactions.
To learn more about how to calculate buying someone out of a house in Australia, you can watch the video below or read on for our detailed guide.
How To Buy Someone Out Of A Mortgage
When separating from a partner and deciding what to do with a shared home in Australia, there are usually three main options:
Buyout: One partner buys the other’s share of the house and becomes the sole owner.
Sell and Split: Sometimes it’s easier to just sell the house and divide the money. This gives both people a fresh start.
Keep Owning Together: In some cases, couples choose to keep owning the house jointly even after splitting up. This might be temporary or long-term
Here are some things to think about with each.
Buyout
Can you afford to pay the other person’s share and handle the mortgage alone?
Do you want to stay in the home for emotional reasons or to keep things stable for kids? While this is important, be careful you’re not sacrificing too much financially for emotional reasons.
Does the property work for your long-term plans? Staying could be good if you want to remain in the area.
Sell and Split
Selling can release equity and end joint ownership once settlement and the mortgage discharge are complete. The division still needs to follow your agreement or court order.
Consider whether the housing market is good for selling now.
Think about where you’ll live after selling – will you have enough money to buy or rent a new place?
Keep Owning Together
Keeping the house could provide consistency for kids. It could be temporary until selling is better. However, this can be messier and more difficult to manage.
If the market is bad for selling, waiting and co-owning allows more time.
If you choose this option, make sure you have agreed on a clear plan for selling the home or buying out your partner’s share of the house.
Making Your Decision
Compare keeping the home, selling and any temporary joint-ownership arrangement with your lawyer and broker. Include repayments, living costs and the practical effect on your household.
Ask about legal deadlines early. Generally, property applications after marriage have a 12 month limit from divorce becoming final; de facto applications generally have a 2 year limit from separation. Exceptions and jurisdictional rules apply. You do not need to wait for divorce to deal with property.
How The Family Law Act Influences The Property Split When Buying Out Your Ex
The Family Law Act 1975 generally governs property settlements after marriage and eligible de facto relationships. Western Australia has a separate framework for de facto property matters. Get advice on the rules and deadlines that apply to you.
A property settlement can include the home, other assets, superannuation and debts. Your share of the overall settlement is not necessarily the same percentage as your share of the house title. Agree the legal settlement before using a calculator result as the payout amount.
This means the final property split might not be exactly equal – especially if one person contributed more or has greater future needs.
Understanding how the Family Law Act works can help you calculate a fair buyout amount and avoid surprises during negotiations.
What Does "Just and Equitable" Really Mean?
The Family Law Act focuses on making the property split just and equitable, not necessarily equal. That means the court (or your legal team) will look at a range of factors before deciding who gets what share of the home.
Even if you’re not going to court, most lenders and lawyers will want to see that your buyout arrangement reflects these legal principles — especially if you’ll be refinancing the mortgage into your name alone.
Let’s look at the key things the law considers.
1. Financial Contributions
This is usually the starting point. It includes things like:
Paying the house deposit
Making mortgage repayments
Covering major renovations or upgrades
Paying rates, utilities, or insurance
If one person contributed more financially, that might increase their share of the equity.
2. Non-Financial Contributions
The Family Law Act also values unpaid efforts, such as:
Maintaining the home (repairs, gardening, cleaning)
Supporting your partner’s career or studies
Acting as the primary homemaker
Even if you didn’t earn an income, your contributions to the household still count.
3. Parenting and Homemaking Contributions
If one partner took time off work to care for children or managed most of the home duties, that’s also considered a significant contribution. These roles often impact future earning potential—and that’s factored in.
4. Future Needs of Each Partner
This part looks ahead. The law considers:
Your age and health
Your income and job security
Whether you’ll be the primary carer of any children
Any other financial obligations or dependants
For example, if you’ll have full-time care of the kids, you may be entitled to a larger share of the equity to support long-term stability.
5. Length of the Relationship
There is no automatic percentage based on the length of a relationship. A lawyer considers the whole financial history, contributions and current and future circumstances. The economic effect of family violence can also be relevant under the current law.
Why This Matters for Your Buyout
A lender needs enough documentation to understand the payout and approve the new loan. That is separate from your lawyer's job of advising whether the settlement is legally appropriate. Loan approval does not confirm that a property split is fair.
Understanding these factors can help you:
Avoid underpaying or overpaying during the buyout
Strengthen your refinancing case with the lender
Finalise the property transfer smoothly and legally
Step-by-Step Buying Someone Out Of A House
Step 1. Initial Preparation
If you decide that buying out your ex’s share of the home is the best option, here are some key steps to take first:
Get Your Finances in Order:
Talk to a mortgage broker to review your budget and what you can afford.
Look at your income, expenses, savings, loans, and more. This helps you know if you can handle the buyout.
Discuss options to get money for the buyout, like using savings or getting a loan.
Agree how to value the property with your solicitor. An independent registered valuer's report is different from an agent's price appraisal, and the lender may obtain its own valuation.
The valuation considers recent area sales, the home’s condition, market trends, and more. This info helps both the buyout and your future investment.
Make sure the valuer understands the local market and has experience valuing similar homes.
Learn About Your Mortgage Options:
If you have a joint mortgage, talk to your lender or broker about refinancing the loan into your name only.
They’ll check if your income, credit, and obligations allow you to qualify for a new loan.
Explore different products to see what loan terms may suit your new situation best.
After organising your finances, having the property valued, and researching mortgages, you’ll be in a better position to move ahead with the buyout process.
Step 2. Negotiating the Buyout
After getting your finances in order and obtaining a property valuation, the next big step is to negotiate the buyout details with your ex. This can be tricky, but having some support in place helps.
Communicate Openly and Fairly:
Have honest talks about what you both want and expect. Listen carefully to understand your ex’s views.
Any agreement must be fair to both of you — consider both legal rights and emotional attachments.
Remember, this impacts both your futures in big financial and emotional ways.
Get Professional Help:
Mediators facilitate talks, offer neutral advice, and guide you through disagreements.
Legal advisors make sure deals follow all laws properly and formalise contracts.
Many couples use both mediation to negotiate and lawyers to finalise agreements.
Set Things Up for Success:
Have all your financial information (budgets, valuations, etc.) handy to keep discussions fact-based.
Be prepared to compromise on some wishes and keep your expectations realistic.
Know that this process can be lengthy and emotional. Respect and patience matter.
Ask your lawyer to record the agreed payout, conditions and settlement timing before arranging the loan.
Step 3. Completing the Buyout
Once you’ve agreed on the buyout terms, it’s time to formalise everything legally and financially:
Transfer Ownership Legally:
Engage a conveyancer or property lawyer to handle the paperwork for transferring the title from both names into just your name.
A conveyancer or property lawyer handles filing the right documents properly.
They’ll organise a settlement date to finalise legal and financial transactions.
Refinance Your Home:
Ask the lender to approve a refinance or other agreed change that releases the outgoing borrower. Transferring the title or signing a private agreement does not by itself remove someone from the loan.
The lender decides if you can afford the full mortgage based on your finances.
Discuss the new loan’s interest rate, repayment term, and other conditions with your lender.
Document Everything:
Draft a contract outlining every buyout detail, like amounts and timelines.
Have your lawyer review to ensure it is binding and protects you.
Both of you sign the needed paperwork and file it with authorities.
Keep copies of all documents related to the buyout.
Completing all the legal, financial, and paperwork steps will ensure a smooth transition to you becoming the property’s sole owner
How To Calculate Buying Someone Out Of A House
The first step in calculating the cost of buying someone out of a house is to understand home equity.
Understand How Home Equity Works
Start with equity = agreed property value minus the current mortgage payout. Then calculate payout = equity multiplied by the other person's agreed share, adjusted for the wider settlement. Finally, estimate new loan = existing mortgage payout + buyout payment + financed costs - your cash contribution.
Equity is the portion of the home’s value that you truly own outright, not counting what’s owed on the mortgage.
To get the equity, first find the property’s current market value. Then subtract what is still owed on the mortgage.
For example: a $500K home with a $300K mortgage has $200K equity.
Home buyout calculator
How Valuation Impacts Equity
Themarket value can shift a lot based on market conditions, nearby sales, the state of repair of the home, and other factors.
So you need an independent, certified valuer to consider location, size, age, trends, and other things.
If the home’s valuation has increased since purchase, there will be more equity to split – which likely means a higher amount needed for the buyout.
If the loan exceeds the property value, there is a shortfall rather than positive equity to divide. A simple percentage calculation does not decide who must cover it. Confirm the settlement with your lawyer and the lender's valuation and usable equity assessment with your broker.
Factors That Affect The Buyout Price
Calculating a buyout involves more than basic math – factors like the remaining mortgage, home improvements, and the current housing market can all influence the final price.
Mortgage Amount Left:
The remaining mortgage owed directly lowers the total equity to split.
For example, an $800,000 home with a $300,000 mortgage has $500,000 in equity. One partner’s half share would be $250,000 – significantly more than if the mortgage were $500,000 (which would leave only $300,000 equity to split).
Also, remember that refinancing to take on the entire loan yourself will affect your budget (higher repayments, different loan terms, etc.).
Home Improvements:
Upgrades and renovations can raise the property value, increasing the equity and buyout price.
Keep records of major home projects to show the valuer and justify a higher price.
However, not all renovations add value – for example, an outdated kitchen remodel may no longer increase the property’s value in today’s market.
Shifting Housing Markets:
Property values can rise or fall as local demand and broader market conditions change.
Current market conditions will heavily influence the valuation; for instance, a sellers’ market versus a buyers’ market can lead to very different outcomes.
Even local developments (like new construction projects or major employers moving into the area) can affect your home’s value.
By considering all these factors, you can calculate a fair buyout amount. This diligence helps ensure your ex-partner receives their fair share.
Check to see if you are eligible for a home loan
Example 1: Buying Out The Family Home - Married Couple in Melbourne
Example only: assume a Melbourne home is valued at $880,000, the mortgage payout is $420,000 and the agreed division of this property's equity is 50/50.
Calculation
Amount
Equity: $880,000 less $420,000
$460,000
Payout for a 50% equity share
$230,000
Existing loan plus payout, before costs or cash contribution
$650,000
The remaining owner needs approval for the $650,000 loan, not just the $230,000 payout. With $30,000 cash contributed and no financed costs, the new loan would instead be $620,000. A Victorian relationship-breakdown duty exemption may apply if its conditions are met; legal and registration costs remain.
Example 2: Unit Buyout - De Facto Couple in Brisbane
Example only: assume a Brisbane unit is worth $590,000, the mortgage payout is $360,000 and the agreed equity split is 50/50.
Calculation
Amount
Equity: $590,000 less $360,000
$230,000
Payout for a 50% equity share
$115,000
Existing loan plus payout, before costs or cash contribution
$475,000
The remaining owner needs to support the full $475,000 loan and any costs they finance. Queensland duty relief depends on the relationship instrument and transfer meeting the rules; it is not created by the calculator choosing a 50/50 split.
Tax Implications Of Buying Out Your Partner
A relationship-breakdown transfer may qualify for duty relief and CGT rollover, but these are separate checks. Have your solicitor and tax adviser confirm both before setting the settlement amount.
Capital Gains Tax (CGT)
If the relationship-breakdown rollover conditions are met, the transferring person disregards the capital gain or loss on the eligible transfer. The person receiving the interest generally takes over its relevant cost base; the buyout value does not automatically become a new tax cost base.
Rollover defers the CGT issue rather than making every future sale tax free. Cost-base adjustments, each ownership interest, how the property was used and the main-residence rules can affect a later sale. Transfers under private arrangements may not qualify. Keep the records your tax adviser needs.
Stamp Duty When Buying Out Jointly Owned Property
Relationship-breakdown exemptions or nominal-duty rules can reduce transfer duty, depending on the state and the actual transfer. The people receiving the property, legal documents and connection to the settlement matter. A buyout between friends or siblings does not automatically receive relationship-breakdown relief.
Other Tax Considerations
If the property has been rented, used for a business or owned by a non-resident, ask for advice before assuming a main-residence exemption applies. Include any agreed tax adjustments in the wider settlement rather than treating the home equity figure as the whole agreement.
Breakdown Of Fees And Costs When Buying Out Your Ex
Get quotes for your transfer and a current mortgage payout figure. Costs vary with the lender, location and legal work; a fixed nationwide fee range can understate what a complex settlement needs.
Valuation: check whether the lender covers its valuation and whether you need a separate report for the property settlement.
Legal advice and settlement documents: ask what the quote includes and whether conveyancing, negotiations and consent-order work are separate. Avoid counting the same legal work twice.
Loan costs: allow for application, settlement, discharge and any fixed-rate break costs. Ask for a payout valid for the intended settlement date.
Duty and registration: confirm any exemption or nominal duty, plus current title and mortgage registration fees.
LMI: a new loan above 80% LVR may attract a new premium unless an exception applies. Check LMI waivers if relevant; a previous premium does not automatically transfer.
Cash buffer: keep an allowance for moving, repairs and bills after settlement.
Pros and Cons Of Buying Your Ex-Partner Out Of The House
Compare the practical benefits of keeping the home with the loan, costs and commitments you would take on.
Pros of Buying Out Your Ex
Buying out your ex has many pros - including keeping the family home
You keep the family home. Staying may avoid a move and let you keep familiar routines, provided the ongoing costs fit your budget.
You may avoid a sale and move. You still need to agree the payout, complete the legal transfer and arrange the finance.
Children may be able to stay near their school and friends. Consider their routines alongside the costs and the wider parenting arrangements.
You may avoid selling-agent and marketing costs by retaining the home. Compare those savings with the legal, lending and transfer costs of the buyout.
You become the sole registered owner once the transfer is completed. The property may still be mortgaged, and loan conditions and any court orders still apply.
You retain future changes in the property's value. That includes potential growth and the risk of a fall; neither the location nor past growth guarantees a future gain.
Once the transfer and loan changes are complete, you may have more control over a future sale. Existing orders, lender requirements and other legal obligations still matter.
Cons of Buying Out Your Partner From The House
You must qualify for a new loan on your own – Lenders will assess your income, expenses, and debts based on a single income now. This can make it harder to borrow the full amount needed. You might need a bigger deposit or an excellent credit history to get approved.
You might face stamp duty costs – In some states, stamp duty still applies to a buyout, even between ex-partners. While exemptions are available in many cases, they only apply under certain conditions (usually with the right legal orders in place). It’s important to get legal advice to know if you qualify for an exemption.
Settlement documents: ask your solicitor what orders or agreement are needed, and ask the lender what evidence it requires. The documents also affect eligibility for duty relief and CGT rollover.
You become responsible for the full remaining loan. Financing the buyout may increase the balance; repayments also depend on the new rate and term. Compare the lifetime cost before restarting a 30 year term.
You might get a higher interest rate – Refinancing the mortgage could result in a higher interest rate than you had before (especially if your financial situation has changed). This means you could pay more interest over the life of the loan. It’s wise to shop around and compare offers to get the best rate possible
The process can trigger emotional stress – Handling both a separation and a large financial negotiation simultaneously can be very stressful. Discussions about the house and money might reopen old wounds. Having a neutral third-party (like a mediator or counsellor) or a supportive advisor can make a big difference in keeping things civil and on track.
You bear all financial risks (and costs) alone – Once you buy out your partner, you’re solely responsible for the property. If expensive repairs are needed or the market declines, you’ll have to handle it without someone else sharing the burden. (Of course, you also keep all the profits if the property value rises – which is a trade-off.)
A property valuation may be required for the loan and a separate report may be needed for settlement. Confirm the scope and fee before ordering it.
It can be hard to agree on what’s fair – One of you might feel you deserve a larger share than the other. Personal feelings, differing valuations, and past financial contributions can all clash when determining a buyout figure. This is why having a mediator or legal advisor involved can be very helpful to reach an agreement.
Need Help Deciding?
Buying out your ex can be a smart move — but only if the numbers stack up. At Hunter Galloway, we’ve helped many Australians in similar situations weigh the pros and cons based on their unique circumstances.
Let’s run the numbers and help you move forward with clarity. Call us on 1300 088 065 to begin your free loan assessment now.
Would you like to learn about your situation?
Jurisdiction Matters: Why Your State Affects The Buyout Process
The state where the property is located determines duty and registration requirements. Ask your conveyancer to confirm the correct documents and any relief before you sign the transfer.
Confirm the settlement-of-property exemption and the applicable form and evidence.
Do not use a standard first-home-buyer calculator to decide the duty on a relationship-breakdown transfer. Any duty relief is separate from title registration and lender fees.
Frequently Asked Questions About Buying Out A Partner After Separation
Here are the top questions we get asked when someone is looking to buy out their ex-partner’s share of a property.
Can I buy my partner out without selling the house?
Yes, you can buy out your partner without selling the house. You’ll need to refinance and pay them their share based on a property valuation. Legal agreements, such as a consent order or binding financial agreement, are strongly recommended. Make sure to have the house professionally valued so you base the payout on a fair market price.
How is the buyout amount calculated?
The buyout amount is usually based on the property’s current market value. You subtract the remaining mortgage and split the equity according to your legal arrangement. A licensed valuer can help you get an accurate figure. Keep in mind this can be adjusted by any agreements you make (or court decisions) if it’s not a straight 50/50 split.
Do I need a lawyer to buy out my partner?
Independent legal advice is strongly recommended. A lawyer can explain the settlement, documentation, duty rules and deadlines; a tax adviser checks CGT. Legal advice is required for a binding financial agreement to meet its legal requirements. A broker assesses the loan, not your legal entitlement.
Can I use a guarantor to help buy out my ex?
A lender may consider a family guarantee for a deposit or security shortfall, subject to its policy. It cannot make up for insufficient borrower income. You still need to afford the full loan. Read how guarantor borrowing power works.
Do I have to pay stamp duty when buying out my partner?
You may qualify for relationship-breakdown relief if the state rules and transfer documents are satisfied. WA can charge nominal duty on an eligible transfer. Do not assume every buyout is exempt; ask your conveyancer to confirm.
What if my ex doesn't agree to the buyout?
A family lawyer can explain negotiation, dispute resolution and court options. Mediation may help where appropriate and safe, but it does not suit every situation. Get advice on any time limit while discussions continue.
How long does the process take?
The timing depends on agreement, valuations, finance and legal documents. Ask your broker and solicitor to work to an agreed settlement date; a disputed settlement can take much longer than the loan application itself.
Can I buy out a unit instead of a house?
Yes. Whether it’s a house or a unit, the process is the same. What matters most is the property value, your borrowing power, and the legal documentation.
Will my credit score be affected?
If you take on a new mortgage, lenders will assess your credit history. If you’ve missed payments during separation, it could impact your loan approval. Talk to your broker early to avoid surprises.
Can both partners stay on the loan?
They remain liable until the lender agrees to release or replace a borrower. The usual goal of a buyout is to transfer the title and refinance into the remaining owner's name, but a private agreement alone does not achieve that release.
Can I afford to buy out my partner after separation?
That depends on whether your accepted income can support the existing mortgage plus the payout and any financed costs, less your cash contribution. Lenders differ in their treatment of child support, maintenance and other income. Get an assessment before agreeing to an amount you need to borrow.
What If I'm not on the property title—can I still buy them out?
Being off the title does not by itself settle your entitlement to relationship property. Ask a family lawyer to assess the whole situation. Any transfer to you and any new loan need separate legal and lender approval.
Key Takeaways And Next Steps
Splitting up and buying out a shared home involves weighing your options carefully — considering financial trade-offs, legal requirements, emotional factors, and future plans.
Main Things to Remember:
Evaluate all alternatives – whether buying out, selling, or continuing to co-own temporarily – and choose thoughtfully.
Prepare thoroughly – get professional advice, understand the legal process, and organise your finances accordingly.
Negotiate fairly (and legally) – consider using mediators and involving lawyers to formalise agreements.
Calculate the buyout amount carefully, taking into account all the factors that could influence the property’s value (and each person’s share).
Address the emotional aspects, tax implications, and future planning concerns as part of the overall decision – don’t overlook any of these areas.
Get Professional Support
A family lawyer can advise on the settlement and transfer, a tax adviser on CGT, and a broker or lender on the finance. Ask each adviser to confirm their part before committing to a payout date.
How Can We Help You?
Start by confirming the proposed settlement with your solicitor, then check whether the finance is achievable.
Our team can check the finance while your solicitor handles the legal settlement. We would start with the property value, mortgage balance, proposed payout, your income and any savings you will contribute.
If you’re ready to get started, give us a call on 1300 088 065 or book a free assessment online to see how we can help make your property buyout (and refinance) a success.
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