Symantec Corporation, a major international software company, goes to the US Tax Court in June to fight a $832 million tax bill.
The bill, which is twice as much as its profits last year, stems from a company it acquired in 2005. Symantec bought Veritas Software Corporation as part of its strategy to broaden its appeal to larger business customers.
Symantec inherited a tax dispute over cost sharing between Veritas and its Irish subsidiary. Symantec's chief executive John Thompson said the business had conformed with the law.
"The IRS is over-reaching a bit here but we will see how the court decides," he said to the Marketwatch website.