Plans to undo Labor's tax-break reforms and net-zero commitments have dominated a key address by Angus Taylor.
The opposition leader fronted a Liberal Party federal council meeting in Melbourne on Saturday, with the national gathering of party heavyweights an opportunity for him to firm up support and confidence after taking the top job in February.
Since his ascension, Pauline Hanson's One Nation has claimed a historic victory in the Farrer by-election and the outspoken right-wing senator has surged in popularity.
"Ours is the only party capable of defeating and replacing this rotten Labor government," Mr Taylor told the meeting.
Accusing Prime Minister Anthony Albanese of starting a war on aspiration with the recent federal budget, Mr Taylor promised to scrap sweeping reforms to negative gearing, capital gains taxes and trusts, which he labelled "toxic".