SYDNEY - Australia's mining boom will slow more sharply than expected and could be over within two years due to easing demand from China and falling prices, a leading economic forecaster warned Monday.
Mining exports to industrialising Asian nations, chiefly China, helped Australia weather the global crisis without entering recession and prompted Canberra to promise a budget surplus for the 2012-13 fiscal year starting July 1.
But Australia's leading private-sector budget forecaster Deloitte Access Economics said the surplus plans could be undone as China slows and with coal and iron ore prices dropping.
Its June quarterly business outlook said while the mining sector continued to drive economic growth and provide a buffer from problems in Europe and China, it would not last forever.
"The strong bit of Australia's two-speed economy won't stay strong for more than another two years or so," Deloitte said, referring to the mining boom.
In an interview with ABC radio, Deloitte director Chris Richardson said demand in key markets for Australian minerals was slowing.
"China is slowing, India is slowing, Brazil is slowing. And you're seeing those prices come off at the same time as costs have risen in Australia in recent years," he said.
"It does not mean that the investment boom goes away tomorrow. You know there's a lot of petrol left in the tank for another year or two years still to come.
"But beyond that the strong bit of Australia's economy is starting to be called into question."
Trade Minister Craig Emerson insisted a decline in mineral prices had been factored into the budget as well as a drop in capital gains tax revenue caused by a stock market still impacted by the global financial crisis.
"We are returning the budget to surplus," he said.
Despite the warning, Richardson said the Australian economy remained a global standout.
"We judge ourselves against our own experience and Australia has done so well for so long that, you know, we want to keep doing better and that's a tough yardstick," he said.
"If we were in the US or the UK or Europe or Japan and looking at Australia then, you know, there should be I think a fair amount of jealousy there."
Australia's economy expanded by 3.2 percent in the year to June 2012.
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