Scott Morrison has told international business leaders he would not compromise on his plan to cut personal income tax.
The prime minister used his address at a business lunch in Singapore to reinforce his plan to create more than 1.25 million jobs over the next five years and lower tax.
"Our plan is for less tax, not more," Mr Morrison said in Singapore on Friday, at the tail end of a three-nation trip.
"Ten million Australians will receive personal income tax relief in the next financial year.
"Legislating our personal income tax plan in full - I underscore, in full - will be the first substantive business in the new parliament."
He said the government intended to "keep faith with the will of the Australian people" expressed at the election who "supported our full income tax plan because it reflected the aspirations of Australians".
Labor leader Anthony Albanese said on Friday he'd had a "preliminary discussion" with his party's leadership, but had yet to come to a final position on the tax cuts legislation, which is expected to be put to parliament when it opens on July 2.
"We're not going to finalise that position until we have a look at exactly what the proposal is that the government brings forward in its legislation," he said.
He has already signalled support for the first stage of the tax cuts, which would provide immediate relief for low and middle income earners.
But Labor has yet to decide on whether to back stages two and three, which would deliver more tax cuts in 2022 and lead to the flattening of the 32.5 per cent marginal tax rate to 30 per cent in 2024.
The tax cuts should have a clear run in the lower house, where Mr Morrison is set to govern with 77 seats in the 151-seat parliament.
But the government may face resistance in the Senate, where it will need the support of crossbenchers or Labor to pass laws.
Greens leader Richard Di Natale warned Mr Albanese that inequality would worsen if Labor supported "Scott Morrison's flat tax system".
"Now is not the time for more tax cuts - now is the time for a massive investment in public services and infrastructure that will work for the wellbeing of everyone in the community, not just the wealthy few," Senator Di Natale said.
He said another good use of the money would be boosting Newstart payments, which would ensure people can live with dignity and help the local economy.
