Senior Labor frontbencher Anthony Albanese has moved to impose higher income tax rates on top earners by amending the party's policy platform to adopt consideration of the "Buffett rule".

If adopted, the measure would potentially capture about 100,000 people, or the top 1 per cent of taxpayers who earn over $300,000.

The rule, named after US billionaire Warren Buffett, targets tax avoidance and minimisation by applying a minimum income tax threshold on total income. This eliminates how much people can deduct from their income using measures like gifts and donations, deductions on interest earnings and negative gearing.

Anthony Albanese addressed the ALP National Conference in Melbourne on Friday. Andrew Meares

The conference passed the motion, which only urges a Labor government to give consideration to adopting the rule.

Mr Albanese cited a proposal by the Australia Institute think-tank to place a 35 per cent minimum income tax on people earning over $300,000 a year. This would raise $2.5 billion a year.