"Minerals Resource Rent Tax (MRRT) is a profits-based tax that raises more revenue when profits are higher and less when they are lower, " he explained.

BBC: Australia collects $130m revenue from mining tax

"It's clear revenues from resource rent taxes have taken a massive hit from the impact of continued global instability, commodity price volatility and a high dollar, " Mr Swan said.

BBC: Australia collects $130m revenue from mining tax

Julia Gillard, the prime minister of Australia, scored a political victory when the lower house of parliament passed the controversial Minerals Resource Rent Tax, which will subject mining companies to a higher levy on annual profits.

ECONOMIST: Politics this week

Those who provide complicated corporate applications such as enterprise-resource planning will rent out their service.

ECONOMIST: Software