The former Labour prime minister said that only Europe could prompt an "unwilling" US into a global effort to stamp out evasion costing USD 7 trillion a year by drawing up a tax haven blacklist and ensuring there were "no treasure islands for the money launderers".
"Ifwe are to ensure no hiding places for tax evaders, no safe haven for tax avoiders and no treasure islands for the money launderers who hide an estimated USD 7.5 trillion (5.2 trillion pounds) of global wealth, we need the automatic exchange of tax information worldwide," he said.
Britain cannot achieve this on its own. And with America currently resisting reciprocal tax arrangements, collective action by all 28 countries of the European Union to blacklist avoiders, impose sanctions and even levy withholding taxes - on our own overseas territories, if necessary - is currently the one game in town, Brown said.
Tax evasion has become a potent political issue since the onset of the global financial and economic crisis eight years ago. Most developed countries have seen an upsurge in voter anger at the ability of rich individuals and multinational companies to find ways of avoiding tax during a period of austerity.