ntu.org has some recent data. In general, federal income tax has gotten more progressive since the 50s. For example, the top 10% paid 49% of taxes in 1980 an

ntu.org has some recent data. In general, federal income tax has gotten more progressive since the 50s. For example, the top 10% paid 49% of taxes in 1980 and paid 70% in 2014. http://www.ntu.org/foundation/page/who-pays-income-taxes http://www.ntu.org/foundation/page/who-pays-income-taxes