This data is based on the wages of a single, childless worker making the average salary in their country in 2014. Data for South Africa, China, Brazil, Indonesia and India comes from 2013. The U.S. local tax data is based on combined local and state taxes paid by individuals in Detroit, Michigan. Local and state taxes in this area tend to be lower than average. The U.S. data does not include Medicare contributions. The Chinese data is calculated based on the average urban worker, who pays more than the average rural worker. Due to rounding, some numbers differ by one tenth of a percentage point.