Note: Tax rates include normal tax of 3 percent plus applicable surtax, and the maximum effective tax rate on net income was 87.2 percent. Reductions for 1950 were 13 percent of total normal tax and surtax up to $400, 9 percent of tax from $400 to $100,000, and 7.3 percent of tax in excess of $100,000. Last law to change rates was the Revenue Act of 1950."