Joint Home Loans for Couples: What You Need to Know

By Jason Given · 2026-08-16 · 7 min read

Why most couples apply jointly

The main reason couples apply for a home loan together is borrowing capacity. Two incomes are better than one when it comes to how much a lender will approve.

Here is a simple example. Partner A earns $85,000 and Partner B earns $65,000. Individually, each might borrow enough for a modest apartment. Jointly, they borrow based on $150,000 combined income - potentially $100,000 to $200,000 more than either could borrow alone. That difference often means the gap between a unit in an outer suburb and a house in a location you actually want to live.

Lenders assess both incomes, both sets of debts, and combined living expenses. The calculation is not simply "add both salaries together" - it is more nuanced than that. Existing commitments like car loans, HECS-HELP debts, credit card limits, and personal loans all reduce your combined capacity. But in most cases, two applicants still come out well ahead of one.

Joint applications also mean both credit histories are assessed. If both partners have clean credit, this is a positive - it gives the lender more confidence. But if one partner has marks on their credit file, it can work against the application. More on that below.

When a solo application is better

Joint is not always the stronger option. There are several situations where applying as a single borrower produces a better outcome:

• ✓Poor credit history. If one partner has defaults, late payments, or court judgments on their credit file, including them on the application can result in a decline - even if the other partner has perfect credit. In this case, a solo application from the stronger borrower avoids the issue entirely.
• ✓Significant existing debts. If one partner has a large car loan, personal loan, or high HECS-HELP balance, those debts reduce borrowing capacity. Sometimes the reduction outweighs the benefit of the second income. A solo application from the partner with fewer debts can produce a higher approval amount.
• ✓Temporary visa. If one partner is on a temporary visa with limited work rights, many lenders will not accept their income at all - or will only use a portion of it. A solo application from the Australian citizen or permanent resident may be cleaner and faster.
• ✓Probation or recent job change. Most lenders want to see that you have passed your probation period. If one partner has just started a new role, their income may not be accepted. Waiting a few months or applying solo avoids this hurdle.

Lendology assesses both options - joint and solo - and recommends the one that gives you the best outcome. There is no guesswork involved. We run the numbers both ways before submitting anything to a lender.

Grant eligibility for couples

South Australia has some of the best first home buyer incentives in the country. But the eligibility rules for couples have a common catch that trips people up.

• ✓First Home Owner Grant ($15,000 for new builds): Both partners must be first home buyers. If one partner has previously owned residential property anywhere in Australia, neither of you qualifies. It does not matter if the property was sold years ago or was inherited - prior ownership disqualifies the couple.
• ✓First Home Guarantee (5% deposit, no LMI): The income cap is $200,000 combined for couples. Both must be first home buyers. This scheme lets you buy with just a 5% deposit without paying Lenders Mortgage Insurance - a saving of $8,000 to $15,000 on most Adelaide purchases.
• ✓Stamp duty concession (SA): Both partners must be first home buyers for the concession to apply. The concession can save you several thousand dollars on properties under $650,000.

De facto couples are treated the same as married couples for all of these grants and schemes. You may need to provide evidence of your relationship - a shared lease, joint bank account, or statutory declaration is usually sufficient.

Ownership structures explained

When you buy a property together, you need to decide how ownership is structured. There are two options in South Australia:

• 1.Joint tenants - equal ownership with right of survivorship. If one partner dies, the other automatically inherits their share. This is the most common structure for couples buying a home together. It is simple and provides automatic protection.
• 2.Tenants in common - specified shares that can be unequal (e.g. 60/40 or 70/30). There is no automatic right of survivorship - each partner's share forms part of their estate. This structure is more common for investment properties or where one partner is contributing significantly more to the deposit.

The ownership structure is separate from the loan. Both borrowers are equally liable for repayments regardless of the ownership split. If you own 30% of the property, you are still 100% responsible for the mortgage if your partner stops paying.

Your conveyancer will set up the ownership structure at settlement. It is worth discussing this early - particularly if your contributions to the deposit are unequal or if you have children from a previous relationship.

What happens if things change

Nobody buys a home planning for a breakup, but it is sensible to understand what happens if circumstances change.

If you separate, both names remain on the mortgage until it is refinanced or the property is sold. Both parties remain legally responsible for repayments regardless of who lives in the property. Missing payments affects both credit scores.

One partner can buy out the other by refinancing the mortgage into their sole name. This requires the remaining partner to qualify for the full loan on their own income. If they cannot qualify alone, the property usually needs to be sold.

A property settlement - through Consent Orders or a Binding Financial Agreement - determines how the property and debt are divided. This is a legal process, and you will need a family lawyer to formalise the arrangement.

Lendology helps with the refinancing side of separation. We work with clients going through property settlements regularly and can advise on what is achievable from a lending perspective before you finalise your legal agreement. See our guide to buying out your partner or our separation finance page for more detail.