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rummage_au(Initiate)Initiate
9 Apr 2026

Hi,

I’m looking for some guidance on the tax treatment of interest deductibility for investment loan structures I’m considering.

I currently have an interest-only investment property loan in joint names, which is fully offset by funds sitting in the offset account. I’m exploring a couple of options and would appreciate your advice on how the interest deductibility would be treated in each case.

Option 1:

I use the offset funds to pay off the loan in full, and then redraw funds from the loan over time to invest in ETFs under my name only. These ETFs would generate regular income distributions.

  1. Would the interest on the redrawn amounts be tax-deductible in this case?
  2. My lender requires that redraw funds first go into the offset account before being transferred to a brokerage account — would this affect the ability to trace the use of funds for tax purposes?

Option 2:

Instead of paying down the loan, I leave the loan in place and use funds directly from the offset account to invest in ETFs.

  1. In this scenario, would the interest on the investment property loan remain tax-deductible?
  2. Given the loan is in joint names but the ETFs would be held in my name only, how should the interest deduction be claimed — jointly based on the loan, or solely by me based on the investment ownership?

I’d appreciate any guidance you can provide on the correct treatment for these scenarios.

Thanks very much for your help.

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3 replies
36 views
3 replies

All replies

YellowPotato(Taxicorn)Taxicorn
10 Apr 2026

Best to see a tax agent or ask ATO's technical advice/private ruling


Reading TR 2000/2 may help


Generally, deductibility of a loan is connected to the purpose and not what is used as security. The offset account is not a loan. Any changes to offset doesn't affect the purpose of the loan.


The interest is only a deduction if it's for an income producing asset. If it's not, it would form part of the cost base

Option 1 would change the purpose of the loan to purchasing ETFs, Option 2 - the loan purpose remains as purchasing the investment property.


For Option 1, I think all the interest for the purposes of purchasing ETF would be deductible for you regardless of the additional names on the loan,

rummage_au(Initiate)Initiate
10 Apr 2026

Thank you for your response. I really appreciate it.


Regarding Option 1, I had a follow-up question - My lender requires that any redraw funds are first deposited into the offset account before being transferred to a brokerage account. Would this affect the ability to trace the use of funds for tax purposes?


Do you happen to know if this could present any issues?


Thanks in advance.

KaraATO(Community Support)Community Support
14 Apr 2026

Hi @rummage_au,


You need to be able to able to clearly trace how the redrawn funds are used. To claim an interest deduction, you need to show a clear link between the borrowed money and the investment it was used for.


It's important to keep:

  • Detailed records showing the flow of funds from the redraw, through the offset account, and into the brokerage account.
  • Dates, amounts, and transaction records that clearly trace the funds to their ultimate investment use.

Offset accounts often have multiple transactions, so mixing investment funds with personal money can make tracing more difficult. We've responded to recent post that goes into this in more detail.


Because these arrangements can get complex, we can't give a definite yes or no. It might be worth speaking with a registered tax agent. They can review your specific arrangement and lender requirements.

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Investment Loan Tax Deduction using Investment Property Loan to buy ETFs | ATO Community