The $2.5 billion taxpayer rescue of Australia’s largest aluminium smelter has raised questions over whether public funds are backing uncompetitive manufacturers.

Anthony Albanese and NSW Premier Chris Minns are poised to sign a bailout agreement for the beleaguered Tomago aluminium smelter, ending months of uncertainty for workers.

Australia’s biggest aluminium smelter is set to receive a major bailout package following long-running crisis talks with the federal and NSW governments.