I'm not aware of any Canadian studies on how much income of Canadian multinational corporations is put in tax havens and lost through tax evasion or avoidance. But there are some American studies, and the numbers are absolutely huge. There isn't any reason to believe that the numbers wouldn't be comparable in Canada.
We should undertake a study. A number of years ago, in one of its reports, the Auditor General suggested there were billions of dollars of Canadian tax revenue lost through the manipulation of transfer pricing by Canadian corporations. So Canada ought to look at the rules in its international tax system that permit that.
Canada should also be supporting the OECD and other international organizations that are trying to prevent harmful tax competition, reduce bank secrecy laws in tax haven countries, and increase the use of exchange of information from countries we've traditionally regarded as tax havens.
So it's a crucially important area.