The tabling of documents in the Legislative Assembly has sparked a political row over the impact the ACT government's tax reforms will have on household rates.
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The Canberra Liberals, who staked their 2012 election campaign on a claim household rates would triple under Labor's reforms, say modelling tabled in the Assembly on Thursday proves their point. But the government has rejected the suggestion, saying its modelling does not factor in population growth, nor separate revenue collected from household, commercial and rural rates.
The government tabled the documents, which paint several scenarios to show how much general rates revenue might grow over a 20-year period, after the Canberra Liberals requested the data.
The Liberals said throughout last year's election campaign that a table in the Quinlan tax review ''clearly'' showed rates tripling over 10 years, a claim that led the economist behind the reforms to say his work was being ''misrepresented''.
Opposition Leader Jeremy Hanson said on Thursday that under one scenario in the government's new modelling the revenue from general rates grew by four times in 20 years and in the highest scenario it grew by 7.6 times.
''The documents provided in the Assembly today by Andrew Barr show that there is no scenario under which this government does not plan to triple rates,'' Mr Hanson said.
''What these documents show is that Andrew Barr and Katy Gallagher lied to the community during the last election.
Mr Barr denied the modelling showed that rates would at least triple. He said the Liberals' claims did not take into account the fact that a growing population would increase revenue because more households and businesses would pay rates.
''There will be an extra 80,000 households over the timeframe,'' Mr Barr said.
''Rather than $300 million worth of rates being collected off 130,000 households and 15,000 business, in 2032 - when the revenue will be much higher - there will have been 20 years of population growth.''