Labor facing fresh pain on carbon tax

The government has revelled in Labor discomfort over a leaked document canvassing climate policy options including a new carbon tax.

Bill Shorten has dismissed reports of Labor supporting a carbon tax as "complete rubbish". (AAP) Source: AAP

Labor can expect more pain from a leaked internal document canvassing climate policy options which was ruthlessly lampooned as the carbon tax rising from the dead.

Opposition Leader Bill Shorten dismissed reports of a new Labor carbon tax as "complete rubbish".

But the government pounced on the leaked document, with Treasurer Joe Hockey saying someone obviously wanted to "kill Bill".

Prime Minister Tony Abbott said Labor can't be trusted not to introduce a "triple-whammy tax".

"It shows Bill Shorten is in every respect a carbon copy of Kevin Rudd and Julia Gillard," he said.

The document was leaked to the Sydney Daily Telegraph which devoted its front page to a caricature of Mr Shorten, Julia Gillard Kevin Rudd as zombies rising from the dead by a tombstone marked "RIP carbon tax 1.7.12 - 17.7.14."