Gday Voodoo,
my wife and l have done this twice in Vic in 1993 and 2000.
1/ Put your ppor into one persons name,you or mrs V ,it dosnt matter.There will be some legal costs but in Vic no stamp duty is payable on transfers between spouses(at least in 2000)
2/ Mr V buys the ppor of mrs v "at arms length" that is at fair market value , not an inflated price.
3/Mrs v takes her cash (cgt free) and buys your new ppor and you top up that money with a non deductable loan if you require more money.
4/With your new house (your old ppor) now a renter ,the loan you got to buy it of mrs v becomes deductable becouse you borrowed the money to buy the house (old ppor) as a renter.
Two points to rember,
lt dosnt matter what you have used for security or if both your names apear on the loan docs just as long as the loan is to buy a property to rent.
Thats a simplified version and of course you will seek legal advice and not take my word for it as l have no formal qualifications to give financial advice to anyone.
MITCH