Senstie, your setup should easily be tax deductible, obviously avoiding mixing business/investment and personal funds in the same account.
I received a private ruling on a similar yet more primative setup using a investment loan with a redraw facility. I was able to redraw funds into a seperate simple savings account to be used for investment related expenses such as rates, insurance etc.
In much the same way a 'new borrowing' of $40k taken from the loan into a offset account to pay 'investment expenses' would be considered deductible.
The only issue the ATO would have (which they seem to chuck in most private rulings related to this) is related to Hart's case and tax avoidance schemes which doesn't really relate to your situation. Either way, a private ruling would be benficial if you're worried or if an accountant can't give you an answer.
I received a private ruling on a similar yet more primative setup using a investment loan with a redraw facility. I was able to redraw funds into a seperate simple savings account to be used for investment related expenses such as rates, insurance etc.
In much the same way a 'new borrowing' of $40k taken from the loan into a offset account to pay 'investment expenses' would be considered deductible.
The only issue the ATO would have (which they seem to chuck in most private rulings related to this) is related to Hart's case and tax avoidance schemes which doesn't really relate to your situation. Either way, a private ruling would be benficial if you're worried or if an accountant can't give you an answer.