Prime Minister Scott Morrison has revealed another $66 billion in spending to help the Australian economy through the coronavirus pandemic.

The second package brings the total spend to $189 billion, including $90 billion from the Reserve Bank, worth about 10 per cent of the size of the Australian economy. It includes giving workers early access to $20,000 worth of superannuation funds if they fall into hardship due to the virus.

"We will be focusing on those in the front line, those who will be feeling the first blows of the economic impact of the coronavirus," Mr Morrison said on Sunday.

"We will be supercharging our safety net and supporting the most vulnerable to the impacts of the crisis, those who will feel those first blows."