A $66 billion economic lifeline is being thrown at Australians as the nation braces for an end to life as it knows it, amid a looming coronavirus lockdown of the worst hit parts of the country.

The Prime Minister has announced a second-stage $66 billion economic stimulus package and urged people to cancel all non-essential travel in a bid to protect Australia in the face of the coronavirus pandemic.

The National Cabinet, which brings together the Prime Minister, premiers and chief ministers, will meet tonight to find a way to force Australians to adhere to social distancing, following the temporary closure of Bondi Beach after people failed to adhere to government spacing requirements.

"The measures that we will be considering tonight means that state premiers and chief ministers may have to take far more draconian measures to enforce social distancing," Prime Minister Scott Morrison said.

On the economic front, small businesses will receive cash payments up to $100,000 and some welfare recipients will receive another $750.

Additional measures include:

Temporarily doubling the Jobseeker Payment, previously called Newstart

Temporarily doubling the Jobseeker Payment, previously called Newstart Allowing people to access $10,000 from their superannuation in 2019-20 and 2020-21

Allowing people to access $10,000 from their superannuation in 2019-20 and 2020-21 Guaranteeing unsecured small business loans up to $250,000

Guaranteeing unsecured small business loans up to $250,000 Reducing deeming rates by a further 0.25 per cent

"We cannot prevent all the many hardships, many sacrifices that we will face in the months ahead," Mr Morrison said.

"And while these hardships and sacrifices may break our hearts on occasion, we must not let them break our spirit and we must not let them break our resolves as Australians."

It builds on the measures included in the first $17.6 billion economic stimulus package announced more than a week ago.

Taking into account the first round of stimulus measures, and those announced by the Reserve Bank this week, the total economic assistance package is worth $189 billion, according to the Government, equivalent to 9.7 per cent of Australia's gross domestic product.

The Prime Minister was set to meet with Opposition Leader Anthony Albanese on Sunday to discuss when the Parliament would sit during the next six months.

A reduced number of politicians will return to Parliament House on Monday to pass legislation required to implement the stimulus measures.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 1 minute 35 seconds 1 m 35 s PM unveils a raft of new measures for small businesses and workers who lose their job

Cash for welfare recipients

The second $750 payment will be automatically paid to an estimated 5 million people on July 13. The first $750 payment, announced in the first stimulus package, will be paid on March 31.

The Government will temporarily double the Jobseeker Payment, previously called Newstart, providing people with an additional $550 a fortnight.

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The payment will be available to sole traders and casual workers, provided they meet income tests. The Government will waive asset tests and waiting periods to access the Jobseeker Payment.

"The nature of these payments and the purpose of these payments are changing," the Prime Minister said.

"This is clearly saying that we expect this to go on for some time and we know that those vulnerable groups may need additional income support during those periods."

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 8 minutes 54 seconds 8 m Treasurer Josh Frydenberg outlines the details of second stimulus package

Support for small business

Not-for-profits and small businesses with a turnover under $50 million will receive a tax-free cash payment of up to $100,000, with a minimum payment of $20,000 for eligible companies.

The payments will be delivered by the Tax Office as a credit on activity statements from late April.

The Government expects 690,000 businesses employing 7.8 million people and 30,0000 not-for-profits will be eligible for measures in the stimulus package.

The Commonwealth is also offering to guarantee unsecured loans of up to $250,000 for up to three years.

Access to superannuation

The Government will allow people to access up to $10,000 from their superannuation this financial year and in 2020-21.

People will not pay tax on the money they access, and withdrawals will not affect Centrelink or veterans' payments.

There will also be a temporary 50-per-cent reduction in superannuation minimum drawdown requirements for account-based pensions in 2019-20 and 2020-21.

Looming travel restrictions

Ahead of National Cabinet, Victoria and New South Wales confirmed they were on the verge of dramatic lockdowns in the worst coronavirus-hit communities.

Mr Morrison said people could continue to go to the supermarket and work, but all interstate and long-distance trips should be cancelled.

South Australia will close its borders at 4pm on Tuesday, a move like those announced in the Northern Territory and Tasmania.

"The more Australians themselves assist us in this fight against the virus to protect lives and livelihoods, the more and better able we are to ensure that Australia comes out stronger on the other side," Mr Morrison said.

"It is a simple plea, we need you.

"We need you to do your bit when it comes to social distancing and keeping that healthy distancing, to respecting and following the rules that we are setting down, but more stronger measures will be coming and they will be coming in more localised areas to deal with outbreaks."

School closures set for discussion

Victoria wants an agreement to close schools from Tuesday, and if the other states do not agree, it will go it alone.

The Prime Minister said any national decision about schools would be based on the advice of health experts.

"It is still the case, and the evidence is, that the incidence of the coronavirus amongst younger people is far lower than it is for the rest of the population, and so the health risk to children is less than to other parts of the population," he said.

"It is also still the fact that if there were widespread school closures across the country, that that would seriously impact and disrupt the health workforce that is needed to save lives."