Rich will continue to pay more tax: PM

Malcolm Turnbull insists high-income earners will continue to pay the bulk of income tax under his government's plan to restructure the system.

An analysis of the plan - which reduces the number of income tax brackets from five to four - shows the top 10 per cent of earners getting 40 per cent of the value of its tax cuts, while the bottom 30 per cent of earners will get just 7 per cent.

"We have a very progressive tax system and people on higher incomes pay more tax than people on lower incomes, in fact a lot more tax," the prime minister told ABC radio on Thursday.