David Pocock wants stage-three tax cuts revisited in light of shrinking workforce

The Greens have said they will use their balance of power in the Senate to push the government to dump the cuts. Pocock, who can make or break government legislation, said the flat tax rate legislated to come into effect mid-next year was not something the nation could afford.

The treasurer, Jim Chalmers, has released sections of the latest population statement, due to be published in full on Friday, which showed Australia was continuing to face a demographic challenge due to its ageing population.

That has led weight to speculation the government may be considering at least delaying the cuts.