The Separation Trap: Why Thousands of Australian Couples Can't Afford to Break Up

A new national survey has put a number on something Australian family lawyers and mortgage brokers have been seeing anecdotally for years: couples who have already emotionally separated - but are still living under the same roof because neither of them can afford to leave.

The Real Insurance Separation Report 2026, which surveyed more than 1,200 separated Australians, found that two in five respondents delayed the decision to leave a relationship because they simply couldn't afford to go. For women, the figure was worse - 46% cited money as the reason they stayed put, rising to 77% among Gen Z respondents and 61% among Gen Y. Separate reporting on practitioner case data found up to one in six people had stayed with an ex-partner specifically to avoid relocation costs or to save money.

This isn't a story about relationships. It's a story about mortgages - and it has a very specific mechanical cause that most people don't find out about until they're in the middle of it.

The New Data: A Housing-Driven Relationship Trap

Call it the separation trap: the point where a couple's relationship has ended, but their finances haven't caught up. Around 42% of separating couples in the survey reported being forced to keep living together because they couldn't fund a separate life on a single income, and the average cost of formally separating - legal fees, asset division, mediation - now sits above $18,000. Nearly half of Australians take on new debt after a split.

What's changed isn't people's willingness to separate. It's that housing costs and mortgage repayments have outpaced the ability of a single income to absorb what two incomes were carrying. A relationship that might have cleanly split into two households five years ago now often can't, because neither party can independently qualify for - or afford - a home loan at today's rates and today's prices.

Why the Mortgage Is the Real Handcuff

Here's the detail almost nobody realises until a lawyer tells them: moving out of the house does not take your name off the mortgage. Neither does a verbal agreement, nor even a signed property settlement on its own. The joint loan stays exactly as it was - both parties still fully liable - until the lender formally refinances it into one name.

That refinance is assessed by the bank as a fresh application. The remaining borrower has to prove, on their income alone, that they can service the full mortgage and fund whatever payout is owed to their ex-partner if there isn't enough equity to cover it outright. A single applicant faces exactly the same property prices as a couple did - with roughly half the borrowing power. That gap is precisely what's stalling so many separations at the "we've decided, but we can't execute it" stage.

The Three Paths Out

Once a couple accepts they need to formally deal with the mortgage, there are really only three routes:

• Buy out your ex-partner's share. You refinance into your name only; the new loan pays out the old joint mortgage plus any equity owed to your ex-partner. This is the most common path when one party wants to keep the home - usually for the kids' stability - and can qualify solo.
• Sell and split the proceeds. The cleanest option financially, but it means re-entering the market from scratch, often at a worse borrowing position than either party had as a couple.
• Continue co-owning, at least for now. Some separated couples formally agree (via consent orders) to keep the property until children finish school or the market improves, with one party paying rent or an occupation fee to the other. This defers the mortgage problem rather than solving it.

Whichever path is chosen, getting a Binding Financial Agreement or Family Court Consent Orders in place matters for more than legal certainty - in most states it's also what allows the State Revenue Office to waive stamp duty on the buyout. A simple handshake or a solicitor's letter typically isn't enough.

The Strategist's View: What Actually Determines Whether You Can Buy Out Your Ex

Lenders don't just look at your income when you apply to buy out a partner. They look at the full picture: your existing debts, any child support paid or received, dependants and care arrangements, and the specific terms of your settlement. Two people on identical salaries can get very different outcomes depending on those details.

Before assuming you can't afford to stay in the family home, or that you'll be forced to sell, it's worth actually running the numbers rather than guessing:

• Use a borrowing power estimator to see what a single income can realistically support before you commit to a path.
• If your solo borrowing power falls just short of what's needed to buy out your ex-partner, a family member acting as a limited guarantor can sometimes bridge the gap without needing a bigger cash payout upfront.
• Model the actual repayments on the mortgage calculator before, not after, signing consent orders - the numbers on paper and the numbers on a bank's serviceability calculator are rarely identical.

The couples most likely to get stuck in the separation trap are the ones who treat the mortgage as an afterthought to the emotional decision. The ones who get out cleanly are the ones who get a proper serviceability assessment done before they finalise how the settlement is structured - because the structure itself can be the difference between qualifying and not.