What are peoples thoughts on the following strategy. Lets say you have a property/s and substantial amount in the offset account. At a current interest rate of 4%, every 100K in the offset would save you $4000 in interest. Lets say, if you could, invest 100K of your money from the offset account in the share market, in particularly the ETF known as VAS. It has a current year return of ~7.15% after the fee. So that is $7150/yr. This equates to $3150 gain for the year after taking into account the additional 4K you would pay in interest after pulling out the funds from the offset account. The VAS dividends have a high franking component, so I presume minimal tax paid, and because you have 4k further interest repayments on your IP, you would then have a furrther tax deduction to your benefit. Would this be a good strategy?