Currency War of 2009–11 dollar, with Goldman Sachs saying the real is the most over valued currency in the world. In October 2010, Brazil began increasing her capital controls, doubling a tax on foreign purchases of fixed-income assets to 4 percent so as to curb the real's appreciation to a two-year. On 18 October, Brazil sought to curb the real's gains by raising taxed capital inflow on fixed-income assets by 2% to 6% and taxed inflows for margin deposits on futures to 6% from 0.38%. Chile said it would implement capital controls to curb gains in the Chilean peso, which had strengthened the most
Brazil–China relations policy in relation to the so-called Currency war. Brazil has called for China to allow a faster appreciation of its currency, which would help other countries to better compete against Chinese exports. Brazil also criticised US policy, saying both China and the US should seek to avoid escalating economic tension concerning trade and currency. Trade between China and Brazil was worth almost $80 US Dollars as of 2014. China is expanding economic ties into Latin America, and Brazil falls into that category. China is investing a Brazilian electric transmission line from the Amazon, as well as importing Brazilian planes and