Interest on your home loan is not tax deductible. Interest on money borrowed to buy income-producing investments generally is. Debt recycling is the strategy of gradually converting the first kind of debt into the second, so that over time your non-deductible home loan shrinks, a deductible investment loan grows in its place, and you build an investment portfolio along the way.
Done properly, your total debt does not increase. What changes is the tax treatment of that debt and the fact that you now own assets you did not own before. Done poorly, the deduction can be lost on day one, or the strategy can turn a manageable mortgage into a leveraged position that has to be unwound at the worst possible time.
This guide explains how debt recycling works in Australia, what the ATO requires, how the 2026 tax reforms change the arithmetic, and who the strategy genuinely suits.
Debt recycling at a glance
Most homeowners with surplus cash flow are choosing between three broad approaches. The table below compares them.
| Pay down the home loan only | Invest surplus cash, no borrowing | Debt recycling | |
|---|---|---|---|
| Total debt | Falls steadily | Falls at the scheduled rate | Stays roughly the same until the home loan is cleared |
| Interest deductible? | No | No (no investment debt) | Yes, on the investment portion |
| Investment exposure | None outside super | Grows slowly from surplus | Grows with each recycled amount |
| Return on each dollar | Guaranteed, equal to the home loan rate, tax free | Market returns, after tax | Market returns plus a tax deduction, less investment loan interest |
| Risk level | Lowest | Moderate | Higher, because it is borrowed money |
| Admin and tax complexity | Minimal | Moderate | High, requires disciplined loan structuring and record keeping |
| Typically suits | Lower tax rates, low risk tolerance, short horizon | Those wanting market exposure without gearing | Higher tax rates, stable income, long horizon, comfort with volatility |
If you are still weighing the first two options, our guide on whether to pay off your mortgage or invest covers that decision in detail. Debt recycling is, in effect, a way of doing both at once.
How debt recycling works
The mechanics rest on a simple principle in Australian tax law. Whether interest is deductible depends on what the borrowed money is used for, not on what secures the loan. A loan secured against your home but used to buy income-producing shares produces deductible interest. A loan secured against an investment property but used to buy a car does not.
Debt recycling uses that principle in a repeating cycle:
- Pay down the home loan. You make an extra repayment, from savings, surplus income, a bonus, or investment income, onto your non-deductible home loan.
- Re-borrow the same amount through a separate loan split. The lender sets up (or increases) a dedicated investment split, so the amount you just repaid is available to borrow again, but in a separate account.
- Invest the borrowed funds directly. The money moves straight from the investment split into income-producing assets, usually a diversified portfolio of shares, ETFs or managed funds.
- Direct the investment income back to the home loan. Dividends and distributions, along with any tax refund generated by the interest deduction, go onto the non-deductible loan, and the cycle repeats.
Each lap of the cycle shifts a little more of your debt from non-deductible to deductible. Over several years the home loan is extinguished and what remains is an investment loan backed by a portfolio you own.
A simple illustration
Consider a household with a $600,000 home loan and $60,000 sitting in an offset account. The main income earner is on the 37% marginal rate, or 39% including the Medicare levy.
Under a debt recycling approach, the $60,000 is paid onto the home loan, reducing it to $540,000. The lender then establishes a separate $60,000 investment split, which is drawn and invested directly into a diversified share portfolio. Total debt is still $600,000.
Assuming an interest rate of 6.0% on the investment split, annual interest is $3,600. At a 39% marginal rate, the deduction is worth about $1,404 a year in reduced tax. If the portfolio pays a 4% yield, that is $2,400 of income (plus any franking credits), which is directed back to the home loan along with the tax saving. The next year, those amounts are re-borrowed through the investment split and invested, and the cycle continues.
The figures here are assumptions for illustration only. Actual rates, yields and tax outcomes will differ, and investment returns are not guaranteed.
The loan structure is where most people go wrong
The ATO looks at the use of borrowed funds, and it traces that use. If the trail is muddy, the deduction is at risk. Getting the structure right before the first dollar moves is more important than any investment decision.
Use a separate split, never a mixed loan
If investment borrowing and private borrowing sit in the same loan account, every repayment is apportioned across both purposes. Over time the deductible portion becomes difficult to calculate and easy to dispute. A dedicated investment split, used for nothing else, keeps the deductible debt clean. The ATO’s ruling on line of credit and redraw facilities (TR 2000/2) explains how mixed-purpose accounts are treated, and it is the reason advisers insist on separation.
Redraw, not offset
This is the most common and costly error. Withdrawing money from an offset account is spending your own money. No new borrowing occurs, so no deductible debt is created, even if every dollar is invested. Debt recycling requires a genuine new borrowing, which means paying the money onto the loan and then drawing it back out of a separate investment split.
An offset account still has a role. It is the right place for an emergency buffer that sits outside the strategy.
Invest directly from the investment split
Funds should move from the investment split to the investment platform or broker, ideally in a single transfer. Routing the money through an everyday transaction account, even briefly, creates a tracing problem, particularly if other money moves through the same account in the meantime.
Keep interest payments separate too
Pay investment loan interest from your own cash flow rather than capitalising it onto the investment split. Arrangements designed to capitalise investment interest while accelerating repayment of the home loan have been successfully challenged under the general anti-avoidance rules in Part IVA, most notably in the High Court’s decision in FCT v Hart. The ATO’s ruling on linked and split loan facilities (TR 98/22) sets out its view.
Check what your lender will actually allow
Not every lender offers multiple splits with redraw on each, and some price investment-purpose splits differently from owner-occupied lending. The structure needs to be confirmed with your lender or mortgage broker before you start, not after the first drawdown.
What to invest in
Debt recycling only works if the borrowed money is used to produce assessable income. In practice, most strategies invest in a diversified portfolio of Australian and international shares, held either directly, through ETFs, or through managed funds. If you are newer to share investing, our guide on what it means to invest in shares is a good starting point.
A few principles apply specifically to a geared portfolio:
Diversification matters more, not less. When the money is borrowed, concentration risk is magnified. A broad, low-cost portfolio is usually more appropriate than a handful of individual stocks. Our comparison of managed funds and ETFs covers the trade-offs between vehicles, and global diversification is worth considering for anyone heavily exposed to the Australian economy through their home and job.
Income matters to the cycle. Dividends and distributions are what feed the next round of recycling. Australian shares paying franked dividends can be particularly effective, because the franking credits reduce the tax payable on the income.
Think carefully about dividend reinvestment. Reinvesting distributions automatically keeps money in the market, but it starves the recycling cycle and creates a long trail of small parcels for tax purposes. Our article on dividend reinvestment plans and the cost base problem explains why. In most debt recycling strategies, income is paid out and directed to the home loan instead.
Build it like any other portfolio. Asset allocation, rebalancing and fee control all still apply. Our step-by-step guide on how to build an investment portfolio covers the framework.
How the 2026 tax reforms affect debt recycling
The Treasury Laws Amendment (Tax Reform No. 1) Bill 2026 passed Parliament in June 2026. Two of its measures are directly relevant to anyone considering debt recycling.
Negative gearing restrictions on residential property
From 1 July 2027, net rental losses from established residential property acquired after 7:30pm (AEST) on 12 May 2026 can no longer be offset against salary and other income. Properties acquired before Budget night are grandfathered, and new builds remain eligible.
The practical effect is that recycling debt into an established residential investment property bought after Budget night loses much of its annual cash flow benefit, because the losses no longer reduce tax on your wages in the year they arise. Recycling into income-producing shares and ETFs is not affected by this measure, and the deductibility of interest on borrowings used to buy shares is unchanged. Our article on how the negative gearing changes affect property investors covers the detail.
Replacement of the 50% CGT discount
Also from 1 July 2027, the 50% CGT discount for individuals, trusts and partnerships is replaced with cost base indexation and a 30% minimum tax rate on net capital gains. Gains accrued before that date retain access to the discount under transitional rules.
Because a debt recycling portfolio is built to be held for a long time and eventually sold, the exit matters. Anyone modelling the strategy now should model it under the new rules, not the old ones, and the question of whose name the investments are held in deserves fresh attention. Our guide to the end of the 50% CGT discount explains the new framework.
Neither measure removes the case for debt recycling into shares. Both change the numbers enough that a projection built on the old settings will overstate the benefit.
The risks you are actually taking on
Debt recycling is often marketed as a tax strategy. It is more accurately an investment strategy funded by borrowing, with a tax benefit attached. The risks are those of gearing.
Market falls hurt more. Your debt stays fixed while your portfolio value moves. A 30% market fall can leave the portfolio worth less than the loan used to buy it. That is survivable if you can hold on, and damaging if you are forced to sell. Our article on what happens to shares during a market crash puts historical falls in context.
Interest rates can rise. The deduction softens the cost of interest but does not remove it. If rates rise faster than portfolio income, the strategy costs more each year to run.
Your income can stop. Illness, injury or redundancy does not reduce the loan. Anyone running a leveraged strategy should have their personal insurance reviewed as part of it, along with an emergency fund held outside the strategy.
Behaviour is the biggest variable. The strategy only works if you stay invested through downturns. Selling in a panic crystallises losses on borrowed money. Our guides on staying invested during volatility and why investors make emotional decisions are worth reading before you commit.
Record keeping errors are costly. One misdirected drawdown or a single private purchase from the investment split can contaminate the deductible debt. The errors are easy to make and hard to fix.
Who debt recycling suits
The strategy works best when several conditions are met at the same time:
- A higher marginal tax rate. The deduction is worth your marginal rate. At 37% or 45% (plus the Medicare levy) the benefit is meaningful. At lower rates it is thinner, and the risk-reward balance shifts towards simply repaying the home loan.
- Genuine surplus cash flow. You need enough spare income to keep reducing the home loan while also meeting interest on the investment split.
- A long investment horizon. Ten years or more is a reasonable minimum, enough to work through at least one full market cycle.
- Stable, secure income. Because the debt remains whatever happens to your job.
- Comfort with volatility. Watching a borrowed portfolio fall in value is a different experience from watching your own savings fall.
- Adequate protection in place. A cash buffer, appropriate insurance and an up-to-date will.
It is generally less suitable for people close to retirement, those with variable or insecure income, anyone who would need to sell investments to meet living costs, and households already stretched by their current repayments.
Starting with a lump sum or existing investments
Many people begin debt recycling with money already sitting in an offset or savings account. The decision between investing the full recycled amount immediately or drawing and investing it in stages is the same one any investor faces, and our guide on lump sum investing versus dollar cost averaging walks through it.
Some investors also hold shares or managed funds in their own names, bought with savings rather than borrowed money. Selling those investments, paying the proceeds onto the home loan and re-borrowing to buy them back converts that equity into deductible debt. It is a legitimate approach, but the sale is a CGT event and the timing matters, particularly with the CGT changes commencing on 1 July 2027. Which parcels are sold also affects the tax outcome, as explained in our guide on which share parcel to sell. Our article on CGT-aware rebalancing before 30 June 2027 covers the transition window in more detail.
Where professional advice adds value
Debt recycling sits across three disciplines. The lending structure needs to be right, the investment strategy needs to suit your risk profile and timeframe, and the tax treatment needs to hold up if the ATO ever asks questions. The errors that cost the deduction, such as using an offset instead of a redraw, drawing before the split is in place, or routing funds through an everyday account, are usually made in the first few weeks and are difficult to reverse.
A financial adviser can model whether the strategy makes sense for your income, tax rate and goals under the current rules, recommend an appropriate portfolio, and coordinate with your mortgage broker and tax agent so the structure is set up correctly from the start. Just as importantly, a good adviser will tell you when debt recycling is not the right fit and a simpler approach would serve you better.
If you are considering debt recycling and would like to understand whether it suits your situation, our investment advice and portfolio structuring team in Adelaide can help you work through the numbers. You can also read more about how Money Path approaches investment strategy.
Frequently asked questions
Is debt recycling legal in Australia?
Yes. Debt recycling relies on the ordinary deductibility of interest under section 8-1 of the Income Tax Assessment Act 1997, where money is borrowed to produce assessable income. What can cross the line is artificially engineering extra deductions, such as capitalising investment loan interest as part of an arrangement to accelerate repayment of the home loan, which has been successfully challenged under the Part IVA anti-avoidance rules.
Can I use my offset account for debt recycling?
No. Withdrawing from an offset account is spending your own money, not borrowing, so no deductible debt is created. Debt recycling requires a genuine new borrowing, which means paying money onto the loan and drawing it back through a separate investment split. An offset account is still useful for holding your emergency buffer.
Does debt recycling reduce how much I owe?
Not on its own. Your total debt stays broadly the same while the strategy runs. What changes is the mix between non-deductible and deductible debt, and the fact that you now hold an investment portfolio you did not previously own. Total debt only falls when you use surplus cash flow or investment proceeds to repay it.
Is debt recycling worth it on a 30% tax rate?
It can be, but the benefit is smaller. The deduction is worth your marginal rate plus the Medicare levy, so at 32% the after-tax cost of investment interest is materially higher than at 39% or 47%. At lower rates, the case rests more heavily on long-term investment returns exceeding the after-tax borrowing cost, and the guaranteed return from simply repaying the home loan becomes relatively more attractive.
Can I use debt recycling to buy an investment property?
You can, and the interest remains deductible against rental income. However, from 1 July 2027, net rental losses on established residential property acquired after 12 May 2026 can no longer be offset against salary and other income. That removes much of the annual tax benefit for established property bought after Budget night. New builds and properties acquired before Budget night are not affected, and shares are not affected at all.
Can I sell my existing shares to start debt recycling?
Yes. Selling investments you own outright, paying the proceeds onto the home loan and re-borrowing through an investment split to buy them back converts that equity into deductible debt. The sale is a CGT event, so the tax cost needs to be weighed against the future deductions, and the timing should be considered in light of the CGT changes that start on 1 July 2027.
What happens to the deduction if I sell the investments later?
Once the investments are sold, the borrowed money is no longer being used to produce income, so interest on that portion of the loan generally stops being deductible. The usual approach is to use the sale proceeds to repay the investment split. If the proceeds are used for a private purpose instead, such as renovating your home, the remaining loan interest becomes non-deductible.
General advice warning. This article contains general information only and does not take into account your objectives, financial situation or needs. It is not tax advice or a recommendation to enter into any borrowing or investment arrangement. Debt recycling is a leveraged strategy that can magnify losses as well as gains. Examples are illustrative only and based on assumptions that may not reflect your circumstances. Tax law, including the measures in the Treasury Laws Amendment (Tax Reform No. 1) Bill 2026, may be subject to further amendment and ATO guidance. You should consider whether the information is appropriate for you and seek personal financial and taxation advice before acting on any of it. Money Path Pty Ltd is a Corporate Authorised Representative (No. 001306822) of Australia National Investment Group, AFSL 522028.
