A joint home loan is a mortgage taken out by two or more borrowers who share responsibility for repaying the debt. Unlike a single-applicant loan where one person bears full responsibility, a joint loan combines the financial profiles of all applicants, typically resulting in greater borrowing capacity and potentially better loan terms.
In Australia, joint home loans are most commonly taken out by couples (whether married, in a de facto relationship, or engaged), but they are not limited to romantic partners. Parents and children, siblings, friends, and business partners can all apply for a joint home loan together. The key requirement is that all parties agree to share the financial obligation and meet the lender’s eligibility criteria.
The primary advantage of a joint loan is increased borrowing power. When two incomes are assessed together, the combined serviceability is typically much higher than either individual could achieve alone. In expensive property markets like Melbourne and Geelong, this additional capacity can mean the difference between purchasing a suitable home and being priced out entirely.
When purchasing property with another person, you must choose how the ownership will be structured. This decision has significant legal and financial implications that extend well beyond the mortgage itself.
| Feature | Joint Tenants | Tenants in Common |
|---|---|---|
| Ownership shares | Equal shares only | Can be unequal (e.g. 70/30) |
| Right of survivorship | Yes: share passes to surviving owner | No: share passes via the will |
| Can sell your share independently | No: must sever tenancy first | Yes: can sell or transfer your share |
| Best suited for | Married couples, de facto partners | Friends, siblings, investors, unequal contributors |
| Tax implications | Income and CGT split equally | Income and CGT split per ownership share |
When you apply for a joint home loan, lenders assess the combined financial position of all applicants. This includes each borrower’s income, employment history, existing debts, credit history, and living expenses. The assessment process is more complex than a single application because the lender must evaluate each person individually while also considering the combined picture.
Both applicants’ incomes are used to calculate serviceability (the ability to meet repayments). For a couple earning $80,000 and $65,000 respectively, the combined income of $145,000 would be assessed against the proposed repayments plus existing commitments. This combined assessment typically allows borrowers to qualify for a significantly larger loan than either could access individually.
However, the assessment also considers each person’s existing debts and liabilities. If one applicant has a car loan, credit card debt, or HECS-HELP obligation, these are factored into the overall calculation. A co-borrower with significant existing debt could actually reduce your combined borrowing power compared to applying alone, which is why it is important to understand each person’s full financial position before applying together.
of Australian home loans are held by two or more borrowers, reflecting the importance of combined borrowing power in today’s property market
One of the most important concepts to understand with a joint home loan is joint and several liability. This legal principle means that each borrower is individually responsible for the entire loan amount, not just their proportional share. If one borrower stops making repayments, the other must cover the full amount to avoid default.
This has significant implications in several scenarios. If a couple separates and one party refuses to contribute to repayments, the other is still legally obligated to pay the full mortgage. If you take out a joint loan with a friend who loses their job and cannot pay, you become responsible for their share. The lender does not care about private arrangements between borrowers. They can pursue any borrower for the full outstanding amount.
Joint and several liability also affects your credit report. If the loan falls into arrears, all borrowers will receive negative marks on their credit files, regardless of who was supposed to be making the payments. This can impact your ability to obtain credit in the future, including future home loans, car loans, and even credit cards.
Sarah and her sister Emma purchased a townhouse together in Torquay as tenants in common with a 60/40 split reflecting their different deposit contributions. They established a co-ownership agreement covering how expenses would be shared, what would happen if one wanted to sell, and how disputes would be resolved. When Emma later decided to move interstate, the agreement provided a clear framework for Sarah to buy out Emma’s share at an independently assessed market value, avoiding a potentially difficult family dispute.
The dynamics of a joint home purchase differ significantly depending on the relationship between the co-borrowers. Each arrangement comes with unique advantages and risks that should be carefully considered before proceeding.
Buying with a spouse or partner is the most common form of joint home purchase in Australia. Couples typically hold property as joint tenants, ensuring automatic transfer of ownership if one partner passes away. The arrangement is generally simpler because couples share a household, make financial decisions together, and have aligned long-term goals. However, even couples should discuss what happens to the property in the event of separation, as de facto couples and married couples have different legal rights under family law.
Buying with friends has become increasingly popular as property prices rise, particularly among younger Australians struggling to enter the market alone. Friends pooling resources can access better properties or enter the market sooner than they could individually. However, friendships can change over time, and financial disagreements are one of the most common causes of relationship breakdown. A comprehensive co-ownership agreement is essential, covering contribution amounts, expense sharing, maintenance responsibilities, and exit strategies.
Buying with parents or family is another growing trend. Parents may co-purchase with adult children to help them enter the property market without providing a guarantor arrangement. This can work well when there is a clear understanding of each party’s contribution, ownership share, and intended timeline. Tax implications should be carefully considered, particularly if the parents already own their own home and the co-purchased property may attract capital gains tax when eventually sold.
Relationship breakdown is one of the most challenging situations involving a joint home loan. When a couple separates, they typically have three main options for dealing with the jointly owned property and the associated mortgage.
The first option is for one party to buy out the other. This involves refinancing the loan into one person’s name and compensating the departing party for their share of equity. The remaining borrower must demonstrate sufficient income to service the loan independently, which can be challenging if the household previously relied on two incomes. The departing party needs to be formally removed from both the loan and the property title.
The second option is to sell the property and divide the proceeds. This is often the cleanest solution, though it may not be ideal if the market conditions are unfavourable or if one party wishes to remain in the home, particularly when children are involved. The proceeds after repaying the mortgage and selling costs are divided according to the ownership structure or as agreed between the parties.
The third option is to retain the property jointly while one person moves out. This is sometimes used as a temporary arrangement while market conditions improve or children finish school. However, maintaining a joint financial commitment with an ex-partner can be stressful and is generally not recommended as a long-term solution.
A co-ownership agreement (sometimes called a co-habitation agreement or property co-ownership deed) is a legally binding document that sets out the rights and obligations of all parties in a joint property purchase. While not legally required, it is strongly recommended for any joint purchase, particularly between non-married partners, friends, or family members.
A comprehensive co-ownership agreement should cover the ownership structure and each party’s share, how mortgage repayments and ongoing costs will be split, responsibility for maintenance and repairs, what happens if one party wants to sell their share, how the property will be valued if one party buys out the other, dispute resolution procedures, and what happens if one party cannot meet their financial obligations.
The cost of having a solicitor prepare a co-ownership agreement typically ranges from $1,000 to $3,000, which is modest compared to the potential cost of a property dispute. Without an agreement, disagreements about the property may need to be resolved through mediation or court proceedings, which can cost tens of thousands of dollars and damage relationships irreparably.
When buying with someone other than a spouse, each party should obtain independent legal advice before signing any agreements. This ensures everyone understands their rights and obligations without any potential conflict of interest. Many solicitors offer a fixed-fee service for reviewing co-ownership agreements, making this an affordable precaution.
The way you structure joint property ownership has direct consequences for your tax obligations. Understanding these implications before purchasing can help you choose the most tax-effective arrangement for your circumstances.
For owner-occupied properties, the tax implications of joint ownership are relatively simple. Mortgage interest on your principal residence is not tax-deductible in Australia, so the ownership split does not affect your income tax. However, if you later sell the property and it has been your main residence throughout, the capital gains tax exemption applies regardless of the ownership structure.
For investment properties, the ownership structure becomes much more significant. Rental income and deductible expenses (including mortgage interest, depreciation, and maintenance) are split according to the ownership share. If you hold as joint tenants, everything is split 50/50. If you hold as tenants in common with unequal shares, the income and deductions follow the ownership percentages. This means couples with significantly different incomes can potentially optimise their tax position by allocating a larger ownership share to the lower-income earner, though the ATO scrutinises arrangements that appear to be primarily tax-motivated.
Capital gains tax also follows the ownership structure. When an investment property is sold, each owner is assessed on their proportional share of the capital gain. If you have held the property for more than 12 months, each individual owner can apply the 50% CGT discount to their share. This means the ownership split can affect the total tax paid on the sale, particularly if the co-owners have different marginal tax rates or different access to capital losses from other investments.
Stamp duty considerations also apply. When one party buys out the other’s share of a jointly owned property, stamp duty is typically payable on the transferred portion. In Victoria, this can represent a significant cost, particularly for higher-value properties. Some exemptions may apply in the case of relationship breakdown, but these vary by state and specific circumstances. Professional tax and legal advice is essential to work through these complexities.
A mortgage broker helps with the joint home loan process by working through the complexities that arise when multiple borrowers are involved. Different lenders have varying policies on how they assess joint applications, and a broker’s knowledge of these nuances can make the difference between approval and rejection.
For example, some lenders are more favourable toward non-traditional joint applications such as friends or siblings purchasing together, while others prefer to lend only to couples. Some lenders will accept unequal income splits more readily, while others require both borrowers to meet minimum income thresholds independently. A broker who understands these differences can match your specific situation to the most suitable lender, saving time and avoiding unnecessary credit enquiries that could affect your credit score.
At Mortgage & Finance Advisory, we regularly help joint borrowers across Geelong, Melbourne, and regional Victoria structure their applications for the best possible outcome. Whether you are buying with a partner, a friend, or a family member, our team can compare options across 60+ lenders and advise on the ownership structure that best serves your financial goals. Contact us on 03 9020 2699 for a confidential discussion about your joint home loan options.
Yes, most lenders will allow up to four borrowers on a single home loan application, though some lenders have stricter limits. Each borrower’s income and debts are assessed, and all parties are jointly and severally liable. Having more borrowers increases borrowing power but also increases the complexity of the arrangement. A co-ownership agreement becomes even more important with three or more parties.
Removing a borrower from a joint loan requires refinancing the mortgage into the remaining borrower’s name. The remaining borrower must demonstrate they can service the loan independently. The lender will conduct a full reassessment, including income verification and property valuation. Both parties must agree to the change, and the departing borrower should also be removed from the property title to avoid ongoing liability.
Yes. When you are a co-borrower on a joint loan, the full loan amount appears as a liability on your credit file. If you later apply for another loan (for example, to purchase an investment property), the lender will factor in the full joint loan repayment as an existing commitment. Some lenders may only count your proportional share if you can demonstrate through bank statements that you only pay a percentage of the repayments.
Unmarried couples can take out joint home loans and many do. However, it is particularly important for unmarried couples to have a co-ownership agreement in place, as the legal protections available to married couples under the Family Law Act may not automatically apply to de facto relationships in all circumstances. Seek legal advice specific to your state and your relationship status before proceeding.
Our experienced brokers compare options across 60+ lenders to find the right solution for your situation.
Director & Senior Finance Broker
With years of experience in mortgage broking and finance, Melanie helps clients across Geelong, the Surf Coast, Melbourne and regional Victoria navigate the complexities of home loans and business finance. Contact our team on 03 9020 2699.
