Thenew laws would allow a first home buyer to opt in to a land tax rather than an upfront stamp duty for properties under $1.5 million butLabor has vowed to overturn the laws if it wins the election.
Perrottet,who has driven the policy,has promised the new opt-in scheme would be in place from January 16 but amendments to the laws will slow down its passage through parliament.
The upper house will debate the new laws this week after a parliamentary committee held a snap inquiry into the policy. The committee will table its report to parliament this week,but it will be a summation of evidence from experts rather than providing recommendations.
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The government does not control the upper house and will rely on One Nation,the Shooters,Fishers and Farmers and the Animal Justice Party to pass the legislation.
NSW Treasury analysis shows a first home buyer who opts to pay property tax rather than stamp duty on a $1.5-million apartment could be ahead financially for 60 years.
Perrottet is eager for the legislation to pass this week but Greens upper house MP Abigail Boyd said her party would move an amendment which,if successful,would force it back to the lower house for further debate.