The international community must do more to make the world's richest companies and individuals pay their "fair" share of taxes, Brazil and France's finance ministers say. Brazil, which is chairing the G20 this year, has been pushing for the group of nations which together account for 80 percent of the world's economy to adopt a shared stance on preventing tax-dodging by billionaires by the summer. "We think it is very difficult for a tax, a fair tax on the super-rich, to achieve its goals exclusively at the national level," Brazilian finance minister Fernando Haddad says during a press conference on the sidelines of the IMF and World Bank meetings in Washington. Sitting alongside Haddad at the IMF event in Washington, French finance minister Bruno Le Maire backs calls for a crackdown on tax avoidance. "This is a need if we want to complete that total of a whole of the international taxation system to get a fair and efficient taxation system for the 21st century," he says. IMAGES AND SOUNDBITES