Greens leader Adam Bandt wants the prime minister to impose a six per cent tax on billionaires' wealth and introduce a new super profits tax on big corporations making excessive profits.

Mr Bandt argues one in three of Australia's biggest corporations pay no tax, and while the country's billionaires increased their wealth by a third during the coronavirus pandemic, many ordinary citizens have suffered.

He believes it is time to make the mega rich pay their fair share of tax, but Mr Morrison dismissed the proposals during Question Time on Tuesday.

"I won't be listening to the Greens and neither will the treasurer and the Australian people who value their jobs and the strength of the economy, which is what actually pays for essential services," the prime minister said.

"This seems to be something that escapes (Mr Bandt) and the Greens, and I suspect many who sit on that side."

Despite grim debt and deficit forecasts stretched across the horizon, the prime minister said the Liberal Party would always favour lower taxes, arguing higher levies would strike out business enterprise and initiative.

"We believe that Australians should keep more of what they earn," Mr Morrison said.

"We believe a dollar kept in the hands of an Australian family is better than a dollar kept in the hands of the government."

Australian Associated Press