Major tax reform probably 'a bridge too far': CBA

Commonwealth Bank economist Luke Yeaman isn't optimistic about major tax reform. (Lukas Coch/AAP PHOTOS)

A leading economist has poured cold water on hopes that the federal government could pull off a major tax overhaul at its productivity summit.

At the same time Luke Yeaman has urged Treasurer Jim Chalmers to consider increasing means testing to raise more revenue.