The richest people in Australia have effectively doubled their collective Wealth during the COVID-19 pandemic, earning an eye-watering $205 million a day over two years.

That is according to a new report by global anti-poverty charity Oxfam that claimed the 47 Billionaires in Australia doubled their collective wealth during the pandemic to a combined $255 billion.

When broken down over two years, that equates to the 47 billionaires earning $205 million a day or $2376 every second of the global crisis.

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As a result, there is now more wealth in possession of 47 Australian billionaires than there is in the poorest 30 per cent of residents, estimated to be around 7.7 million people.

Oxfam Australia's Chief Executive Lyn Morgain said the divide between the megarich and poor has blown out during the global crisis.

"The record-breaking nature of the growth in their wealth means that while many have been pushed to the brink, billionaires have had a terrific pandemic," Ms Morgain said.

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Mining magnate Gina Rinehart remains Australia's richest person with an estimated personal net worth of more than $22 billion, followed by Software entrepreneurs Mike Cannon-Brookes and Scott Farquhar each with a shade over $19.5 billion, according to Oxfam estimates.

A full list of Australia's top 10 billionaires as estimated by Oxfam can be found below.

The report also dealt with wealth on a global scale, finding that the world's ten richest men – including current top spot holder Elon Musk – made a collective $1.6 billion a day during the pandemic or $18,750 per second.

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If those top 10 richest men were to lose 99.9 per cent of their wealth, they would still be richer than 99 per cent of all people on Earth.

Ms Morgain blamed Australia's economic landscape for the widening divide between rich and poor, arguing the system enables the uber-rich to more easily grow their wealth.

"Inequality at such pace and scale is happening by choice, not chance," she said.

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Mirroring a growing movement in the United States, Ms Morgain called for a "wealth tax" that would see higher tax rates imposed on the ultra-rich.

"It's time for the Australian Government to take this issue seriously and take action to close the gap between the rich and poor. We have calculated that an annual $30 billion wealth tax would have a massive impact," she said.

"For example, it could cover close to half the cost of achieving the World Health Organization's mid2022 vaccination goal for lower income countries, helping protect all people, including Australians, from further variants and preventing millions of people around the world being pushed into greater hardship and poverty,"

AUSTRALIA TOP 10 RICHEST PEOPLE: OXFAM REPORT

1. Gina Rinehart – $22.2 Billion (Mining)

2. Mike Cannon-Brookes – $19.6 Billion (Software)

3. Scott Farquhar – $19.5 Billion (Software)

4. Andrew Forrest – $18.6 Billion (Mining)

5. Harry Triguboff – $10.1 Billion (Real estate)

6. Anthony Pratt – $10.0 Billion (Manufacturing)

7. John, Alan & Bruce Wilson – $6.6 Billion (Retail)

8. Melanie Perkins – $6.5 Billion (Software)

9. Cliff Obrecht – $6.5 Billion (Software)

10. Richard White – $5.5 Billion (Software)