Australian Home loan dilemma

[They know]

Can they know everything which goes on here, cant see it.  Got to be some benefit in living and working overseas or whats the point.  Its pointless being an expat if youre lumbered to pay 47% tax back to Australia !!!! No wonder theres less & less aussies working overseas now. 

[keeping rent secret]

It's risk is massive because of the size of the bet is massive.   Let's presume he borrows SG$1.5m to upgrade in Mosman.  If the AUD drops by say 10% against the SGD his SG bank may very well make a margin call to top up the $150K difference.  It has happened plenty of times before.

The AUD is near 20-30 year highs again.  Just need some uncertainty coming out of China and the AUD could tumble again.   

I'm borrowing from St George bank.  I want $800 k and they offered $400 k.  I have a $400 k stock portfolio to dip into if needed.  I need that $800 k.