G20 ministers urge tighter tax rules for multinationals The world's major economies need to deepen cooperation on tax collection as companies seek to minimise the amount they pay to governments, G20 finance ministers say. The issue has become controversial in many countries, with multinational firms from Google to Starbucks facing accusations of not contributing appropriately to the economies where they make their money, and multi-billion-dollar merger proposals being partly driven by tax considerations. IMAGES AND SOUNDBITES