| Year | Loan (No DR) | Portfolio (No DR) | Net Wealth (No DR) | Debt Free? (No DR) | NDL (DR) | DL / Inv. Loan (DR) | Portfolio (DR) | Net Wealth (DR) | Tax Saved (DR, cumul.) | Debt Free? (DR) | Wealth Difference |
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Debt recycling is a wealth-building strategy for Australian homeowners who carry a mortgage. The core idea is simple: instead of slowly paying off a non-deductible home loan, you redirect surplus cash to pay it down faster — then immediately redraw that same amount to invest in income-producing assets like shares or ETFs. Because the redrawn funds are used for investment, the ATO allows the interest on that portion to be claimed as a tax deduction each year.
The strategy does not increase your total debt — it restructures it. Over time, your NDL (home loan) shrinks while your DL (investment loan) grows by the same amount. The annual tax refund on DL interest is typically reinvested, compounding the benefit. If your investments also pay dividends with franking credits, these further reduce your tax liability — or generate a cash refund.
Pay extra into your home loan → immediately redraw → invest in income-producing assets. The redrawn portion's interest is now tax-deductible. Repeat each year as your NDL shrinks.
Investment loan interest × your MTR = annual tax refund. At a 32% MTR on a 6% p.a. interest rate, your effective borrowing cost drops to ~4.1% p.a. The higher your MTR, the greater the benefit.
Australian shares often carry franking credits — the 30% corporate tax already paid by the company on your behalf. These offset your personal dividend tax and can result in a cash refund from the ATO.
Investment returns are not guaranteed. If your portfolio falls significantly, you still owe the full DL. A falling market combined with poor cash flow can create financial stress. This strategy suits those with stable income and a long time horizon.
Borrowed funds must be used solely for income-producing investments (ATO: Interest deductions). Your lender must support loan splitting (separate NDL and DL accounts). Accurate record-keeping is essential. Always get tax advice before proceeding.
At the start, your NDL is your full mortgage. Each recycling cycle moves a portion from NDL to DL. The goal is to reach NDL = $0 — at which point 100% of your loan interest is tax-deductible and your home is effectively mortgage-free.
Debt recycling converts non-deductible mortgage debt into tax-deductible investment debt. You pay extra into your home loan, redraw the same amount to invest, and claim the interest as a deduction. Your total debt stays the same — only its tax treatment changes. The ATO permits this under section 8-1 of the ITAA 1997 provided the borrowed funds are used for income-producing purposes.
Yes. The ATO allows interest deductions on money borrowed for income-producing investments. The key requirement is that borrowed funds are used to purchase income-producing assets such as shares or managed funds, and proper records are kept of the loan split.
Debt recycling works best for homeowners on a high marginal tax rate (39% or 47%), with surplus monthly cash flow to deploy, who plan to invest in income-producing assets — particularly Australian shares with franking credits.
Franking credits represent 30% corporate tax already paid on Australian dividends. They reduce or eliminate your personal tax on dividend income — providing after-tax cash flow that can be directed toward paying down your non-deductible loan faster.
NDL (Non-Deductible Loan) is the home portion of your mortgage — interest is not tax-deductible. DL (Deductible Loan) is the investment portion — interest is tax-deductible. Debt recycling progressively converts NDL into DL over time.
Investment returns are not guaranteed. If your portfolio falls significantly, you still owe the debt. A falling market combined with poor cash flow can be stressful. Always seek advice from a qualified financial adviser before implementing this strategy.
The key metric is your after-tax borrowing cost. At a 6% interest rate and 39% marginal tax rate, your effective cost of recycled debt is 3.66% p.a. — well below long-term ASX 200 total returns of approximately 9–10% p.a. The wider this gap, the more debt recycling benefits you. Use the calculator above to model your specific scenario.
Yes. Your lender needs to support loan splitting so you can maintain separate NDL (non-deductible) and DL (deductible) accounts. Most major Australian banks and many non-bank lenders offer this feature. The split ensures the ATO can clearly identify which portion of interest is deductible.
How the strategy turns a non-deductible home loan into tax-deductible investment debt — and who it suits.
The two strategies side by side over 20 years, and why the after-tax cost gap decides the winner.
Australian dividends carry 30% company tax already paid — here's how that speeds up the repayment loop.