How much tax should big firms pay?
Apple's recent record profit has raised the question again of how much tax should the world's biggest companies pay?
The tech giant is just one of many multi-nationals under fire for what critics claim is tax avoidance - channelling revenue to different countries with lower tax rates.
But could that soon be a thing of the past? That's what the Organisation for Economic Cooperation and Development is hoping.
The BBC's Asia Business Report heard from KPMG's global head of tax, Greg Wiebe, who said the region's tax structures are in for a major upheaval.
29 Jan 2015