Tax brawl firms up as parties push for more relief

Both major parties are promising tax relief for Australian workers. (Diego Fedele/AAP PHOTOS)

Australians could be in for greater tax refunds which ever way the wind blows at the next election with the opposition flagging a new package to let workers keep more of what they earn.

Labor's revamped stage three tax cut package is up for debate in the Senate as the government challenges the opposition to vote for the change to their original policy.