How To Buy An Investment Property To Pay Off Your Home Loan
Buy an investment property in a market set up for above average capital growth, let it do its work for a 3-5 years, sell, and use the profit to pay down the debt on your mortgage. It's one of the more powerful levers I talk to clients about, because I used the same strategy just last year.
Renovating your own home is NOT the strategy.
Your home's growth is real, but it's trapped. Unless you sell it, which defeats the purpose, because you still need somewhere to live, or refinance it, which adds debt rather than removing it, a more valuable home doesn't put a single dollar toward its own mortgage. Renovating your own home can lift its value, but that value just sits there. It doesn't generate income, there's no rental income to offset your interest repayments, so there's no potential tax deduction for the renovation cost.
An investment property is different precisely because you don't live in it. You have rental income to help wit holding it and the value can potentially go up, through the market, through renovation, or both, and when you sell, the profit is cash you can actually pay down your owner occupied debt with... or buy a Ferrari. The choice is yours.
It's not that an investment property is inherently better than your home; it's that you can still have a place to live while you invest.
Get honest about the growth assumption
A lot of this strategy is based on strong, fast growth, sometimes people throw around figures like 15% growth a year for three to five years running. Sustained double-digit growth, year after year, tends to show up in specific boom windows in specific locations, it isn't the long-run norm, and building a debt-payoff plan around it as your base case is a good way to be disappointed. Take a look at the Distribution of House Price Index, If you were to time the market in Sydney back in 2013 - 2016, the average growth was 14% p.a. But there were markets in Sydney that did more than that. That was just the average. Another example is has just happened, Perth since 2022. The Perth market right now in 2026, it is now unlikely to grow enough for this strategy to work well - Best to look somewhere else.
Proof that this strategy works with my own portfolio: I was able to pay off my mortgage on one of my investment properties by selling a property I bought in 2023 for $385,000. It sold for $785,000... Then I paid down my mortgage on my unit in Darwin which had a debt level of ~$275,000. After agent fees and marketing. The unit was paid off and the rent was ALL income. I still had some money to buy my dream motorcycle (KTM Duke 990, for those who care).
The tax change that just moved the goalposts
This is the part I'd want any client to understand before committing to a hold-and-sell timeline, because it's brand new. Legislation replacing the 50% Capital Gains Tax discount. From 1 July 2027, the old discount is being replaced with cost base indexation plus a 30% minimum tax on the gain, for individuals and trusts, according to AusTax.tools' summary of the enacted law. Growth you've already banked up to 30 June 2027 keeps the old 50% discount under a deemed-sale mechanism, it's only growth after that date that falls under the new rules.
On top of that, negative gearing on residential property investments is being limited to new builds only, from 1 July 2027, and the cutoff for which properties are affected is tied to Budget night, 12 May 2026, per Baker McKenzie's analysis.
This doesn't mean the strategy isn't viable. It does mean the after-tax profit you're counting on to pay down your home loan needs to be modelled properly, with current numbers, by a tax professional, not estimated off last year's rules. You can still make great profit if done right.
Renovation and development: a real accelerant, and a real time cost
Adding value through renovation or a small development can meaningfully speed up the growth side of this equation, beyond what the market gives you for free. But I'll be direct here: running a renovation or development properly is a genuine mental load. Managing trades, approvals, budgets and timelines on top of a full-time job and a family is where I've seen this strategy go sideways, I managed and executed my own renovation myself but was extremely time consuming and I burnt out multiple times - mind you I tried to save every penny so I did everything myself except electrical, because I didn't want to die. But without that renovation I wouldn't have achieved the price I did, but I could have spent more money to get someone else to manage everything and kept at my day job.
If you're time-poor, the fix isn't to avoid renovation or development altogether, it's to build the right team around you before you start: a buyer's agent to find the right property, a builder or project manager who actually project-manages, and someone keeping the numbers honest along the way. The strategy still works. It just isn't a strategy you should be running by yourself at 6pm after work.
More debt, to pay down debt..!?!?
Start with an owner-occupied property worth $1,000,000 with an existing home loan of $500,000.
The homeowner then completes an equity top-up or refinance for an additional $150,000, increasing the owner-occupied debt to: $500,000 + $150,000 = $650,000
That $150,000 is then used toward the deposit and purchase costs on a $600,000 investment property.
Assumptions:
Owner-occupied property value: $1,000,000
Original home loan: $500,000
Equity release: $150,000
Home loan after equity release: $650,000
Investment property purchase: $600,000
Investment loan: $480,000
Investment property value after 5 years: $1,000,000
Gross capital growth: $400,000
Assume approximately $30,000 in purchase costs and $25,000 in selling costs.
This gives a simplified capital gain of: $1,000,000 − $600,000 − $30,000 − $25,000 = $345,000
Using simplified tax: $345,000 × 30% = $103,500 estimated tax
After selling the investment property:
$1,000,000 sale price
− $480,000 investment loan
− $25,000 selling costs
− $103,500 estimated tax
= $391,500 remaining
That $391,500 could then be directed back into the owner-occupied loan.
$650,000 − $391,500 = approximately $258,500 remaining home loan debt.
So, in this simplified example, the homeowner starts with $500,000 of owner-occupied debt, accesses equity to purchase an investment property, and five years later could potentially reduce the home loan to around $259,000.
That is approximately $241,000 less owner-occupied debt than where they started, despite initially increasing the loan to fund the investment purchase.
You couldn't pay that off with your wage. Imagine you did this with 2 investment properties!
This is a simplified example only. Actual capital gains tax, inflation indexation, transaction costs, interest, rental income, holding costs and tax outcomes will depend on individual circumstances.
Conclusion
Using investment property growth to pay down your home loan is a legitimate, well-used strategy, but it rests on three things going right: a realistic growth assumption rather than a best-case one, a clear-eyed read on how the current tax rules apply to your specific timeline, and a support team if renovation or development is part of the plan. Get those three right and it's genuinely one of the more effective ways to bring your home loan down faster than repayments alone ever could.
I would recommend joining a community around renovations, that's what I did and helped me with the confidence too. The community that helped me because they have local meet-ups often and I would definitely recommend
->> Renovation Mastery by Belinda Smith
If you're thinking about this, what's the timeline you're actually working with, and have you run it past your accountant and your mortgage broker?
This article contains general information only and doesn't take into account your personal financial situation, needs or objectives. It isn't personal financial, legal or tax advice. Capital gains tax and negative gearing rules have recently changed and are complex, speak with a registered tax accountant about how the current rules apply to your specific circumstances and timeline before acting on any strategy discussed here.