THE Turnbull government attack on Labor's negative gearing policy could be bolstered by a report's claim that such changes would lift rents by at least 10%.
A report by BIS Shrapnel to be released today models the impact of one of key changes Labor has proposed - limiting negative gearing to new properties.
The Property Council of Australia has launched a campaign against changes to property tax breaks, but BIS Shrapnel declined to name who had commissioned the report.
Labor would remove negative gearing from established homes and cut the capital gains tax discount to 25%, from July 2017. BIS Shrapnel modelled the change from July this year, but with no change to CGT.
It found the impacts could include a 10% jump in average rent, a $1.65 billion fall in government revenue and a drop in construction of 7200 homes a year.
Despite not examining the impact of potentially billions of dollars in savings through a CGT discount, the BIS Shrapnel report said "in other words, the impact would go well beyond any saving of the income tax concession".
While Labor has relied on modelling from the left-leaning McKell Institute to back its policy, that modelling does not exactly mirror Labor's proposals.
Opposition Leader Bill Shorten again refused yesterday to say whether the party had fully modelled its proposed changes.
Prime Minister Malcolm Turnbull has not released any tax proposals ahead of the May budget and a potential double dissolution election, despite indicating he would at various times since becoming PM.
He told Question Time yesterday that Labor's proposal would not only reduce the value of properties up for sale, but "progressively" reduce the value of other housing.
Former Commonwealth Bank CEO David Murray says Labor's negative gearing plan may be good for the economy if it improves housing affordability.
Numerous economic experts have called for limits on negative gearing.
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