A report released by the G20's Financial Stability Board is calling on Australian legislators and finance managers to implement measures that will minimize the country's dependence on the big four banks.

Australia's primary banking institutions - Westpac, CBA, NAB and ANZ are currently heavily engaged in the commodities expansion with a total of $30 billion in direct loans to the mining industry, according to reports from "The Australian".

As a result, the mining segment may draw in considerable foreign investment that can lead to over-exposure of the industry and banks to international markets in case of another financial downturn, according to "The Australian".

The G20 study disclosed that important structural changes are being implemented in the country as a result of the sudden growth of mining and peaking of trade.

There is an increasing apprehension that economic growth might slow down should the global economy go back into a state of recession.

Right now, the post-crisis period poses a test for the Australian government.

"It is a situation wherein the domestic monetary policy is being squeezed together with a moderately high household liability set against the background of an unstable world financial system," the G20 report stated.

The brisk demand for products from Asian economies has made possible the nation experiencing a commodity-motivated outpouring of investments.

Nonetheless, focus is needed amid the unpredictable and recurring price changes.

The report also mentioned the need for government and regulatory agencies to watch out for surprises and be ready in the event of any serious monetary problems.

A banking analyst from the Nomura group commented that bank revenues may be put in jeopardy in case the country's economy slows down and prices of commodities collapse.

However, an official from the National Australia Bank said that the bank was positive that the mining boom will remain upbeat notwithstanding the structural changes in the market.

The banks have infused approximately $30 billion in the form of direct loans to mining projects.