The countries with most voting power are now the United States ( 15.85 % ) , Japan ( 6.84 % ) , China ( 4.42 % ) , Germany ( 4.00 % ) , France ( 3.75 % ) and the United Kingdom ( 3.75 % ) . The countries with most voting power are now the United States ( 15.85 % ) , Japan ( 6.84 % ) , China ( 4.42 % ) , Germany ( 4.00 % ) , the United Kingdom ( 3.75 % ) , and France ( 3.75 % ) .