Fonterra Cooperative Group is likely to be among some 20 New Zealand companies left dealing with increased red tape to comply with wide-ranging reforms to corporate tax rules proposed by the Organisation for Economic Cooperation and Development and expected to be endorsed by the world's 20 most powerful nations. The OECD/G20 Base Erosion and Profit Shifting project is targeting global tax losses estimated at US$100 billion to US$240 billion a year, or between 4 percent and 10 percent of global corporate tax revenue.