It seems much better to put any spare money (from your job) to super via salary sacrifice then it does to take it and put it on your IP loan. I've put my notes/calculations below. Just after some confirmation I'm not missing something here or made a mistake in calculations?
I've attached two calculations, the first with 9% projected super fund return, and the 2nd with a 5% super fund return. In the latter the super fund return is set to the same value (5%) as the IP interest rate.
The reason the Salary Sacrifice is so much better is:
* tax on initial amount is 15% as opposed to 37% tax
* over recent years super funds returning ~9% per year, whereas IR on IP loans are around 5% only
* savings on putting against IP loan is even less than the IR noting you would have got some negative gearing benefit too (assuming the IP is negatively geared)
Case 1 - 9% Super Return
Case 2 - 5% Super Return
I've attached two calculations, the first with 9% projected super fund return, and the 2nd with a 5% super fund return. In the latter the super fund return is set to the same value (5%) as the IP interest rate.
The reason the Salary Sacrifice is so much better is:
* tax on initial amount is 15% as opposed to 37% tax
* over recent years super funds returning ~9% per year, whereas IR on IP loans are around 5% only
* savings on putting against IP loan is even less than the IR noting you would have got some negative gearing benefit too (assuming the IP is negatively geared)
Case 1 - 9% Super Return
Case 2 - 5% Super Return