Labor MP Ed Husic has again taken aim at IT giant Apple in parliament, this time over how much tax its Australian operations pay.

"We cannot afford to have some businesses paying their fair share and others having a lighter load," Mr Husic told the Federation Chamber, an offshoot of the House of Representatives, on Wednesday.

He said Apple generated $6 billion in revenue in 2011 but only paid $40 million in tax - less than one per cent of its turnover.

Its profit for the year was reported to be just $99 million.

"While they generated $6 billion in revenue, they apparently racked up ... $5.5 billion in costs. How?" Mr Husic told parliament.