You sound like you are not a fan of negative gearing?
In case you don't understand, yes there is a tax benefit of about 10% of any out of pocket expenses that are NOT covered by the income received in the form of rent, for example rent received is $400 pw, out of pockets are $420 per week, so 10% of $20 is claimable. That $20 reduces your taxable income for that period,so you pay less tax, so 30% of $20 is

??
BUT!!!! and this is a BIG but, when the property is sold you pay 30% of any capital you make, so you make $100,000 'profit' for example, there goes $30k in Capital Gains Tax, so any gain through negative gearing is quickly lost.
Also of GREAT importance, is that up to 80% of all rental houses are owned my 'mum and dad' investors, people who were told there would be NO age pension so that they better look after themselves, so they bought houses to support themselves in retirement
Now if those 'mum and dad' investors didn't own rental houses, who would own them? and what would the rental market look like if the 'mum's and dad's' didn't own them? Would there be more or less houses available for rent?
I was actually in favour of the Shorten plan of cutting the negative gearing for existing properties and only having it for new properties, this would have slowed down the competition to buy existing houses as the 'mum and dad' investors wouldn't be buying them as much and would have increased the new house market, which increases employment with all its flow on benefits, and increases the rental house market, but that is not to be