Former prime minister and treasurer Paul Keating has come to the defence of tax changes in the federal budget, as a Labor premier says workers are still paying too much.
Mr Keating said capital gains tax changes in the budget were "structurally sound", despite concerns from business owners it could stifle investment.
The Albanese government's fifth budget replaces the 50 per cent discount on capital gains held for more than a year with a rate based on inflation.