Labor's strong showing in Saturday's by-elections has convinced at least two crossbench senators they're doing the right thing opposing corporate tax cuts.
Independents Tim Storer and Derryn Hinch are both open to negotiation but they still oppose the coalition's plan to cut taxes for big businesses.
A spokesman for Senator Storer said the by-election results, where Labor campaigned on increasing health funding instead of giving big banks a tax handout, showed he was on the right track opposing the cuts.
But the South Australian senator is prepared to negotiate if the government can show evidence that corporate tax cuts will actually flow through to higher wages and business investment.
Senator Hinch has been pushing for companies with turnovers below $500 million a year to get the cut, meaning the banks would miss out.
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"My $500mill turnover compromise looks better by the day," Senator Hinch tweeted on Monday.
"It would help about 6000 companies. And not reward tax-avoiding multi-nationals and Royal Commission-tainted banks."
The government wants to cut the tax rate from 30 per cent to 25 per cent for companies with turnovers above $50 million a year, but so far hasn't got the eight cross bench votes required.
So far just four of the 10 crossbench senators are on board.
Liberal Democrats senator David Leyonhjelm confirmed he still plans to vote for the cut.
