- ^ "1921 Income Tax Act" (PDF). HiddenMysteries.org.
The United States Revenue Act of 1921 (ch. 136, 42 Stat. 227, November 23, 1921) was the first Republican tax reduction following their landslide victory in the 1920 federal elections. New Secretary of the Treasury Andrew Mellon argued that significant tax reduction was necessary in order to spur economic expansion and restore prosperity.
Mellon obtained repeal of the wartime excess profits tax. The top marginal rate on individuals fell from 73 to 58 percent by 1922, and preferential treatment for capital gains was introduced at a rate of 12.5 percent. Mellon had hoped for more significant tax reduction.
In 1921 a rate of 10 percent was levied on the net income of corporations and 12.5 percent levied thereafter.
A Normal Tax and a Surtax were levied against the net income of individuals as shown in the following table.
| Revenue Act of 1921 Normal Tax and Surtax on Individuals | |||||
| Net Income | Normal Rate | Surtax applicable to 1921 |
Surtax applicable to 1922 and thereafter | ||
| (dollars) | (percent) | Surtax Rate (percent) |
Combined Rate (percent) |
Surtax Rate (percent) |
Combined Rate (percent) |
| 0 | 4 | 0 | 4 | 0 | 4 |
| 4,000 | 8 | 0 | 8 | 0 | 8 |
| 5,000 | 8 | 1 | 9 | 0 | 8 |
| 6,000 | 8 | 2 | 10 | 1 | 9 |
| 8,000 | 8 | 3 | 11 | 1 | 9 |
| 10,000 | 8 | 4 | 12 | 2 | 10 |
| 12,000 | 8 | 5 | 13 | 3 | 11 |
| 14,000 | 8 | 6 | 14 | 4 | 12 |
| 16,000 | 8 | 7 | 15 | 5 | 13 |
| 18,000 | 8 | 8 | 16 | 6 | 14 |
| 20,000 | 8 | 9 | 17 | 8 | 16 |
| 22,000 | 8 | 10 | 18 | 9 | 17 |
| 24,000 | 8 | 11 | 19 | 10 | 18 |
| 26,000 | 8 | 12 | 20 | 11 | 19 |
| 28,000 | 8 | 13 | 21 | 12 | 20 |
| 30,000 | 8 | 14 | 22 | 13 | 21 |
| 32,000 | 8 | 15 | 23 | 15 | 23 |
| 34,000 | 8 | 16 | 24 | 15 | 23 |
| 36,000 | 8 | 17 | 25 | 16 | 24 |
| 38,000 | 8 | 18 | 26 | 17 | 25 |
| 40,000 | 8 | 19 | 27 | 18 | 26 |
| 42,000 | 8 | 20 | 28 | 19 | 27 |
| 44,000 | 8 | 21 | 29 | 20 | 28 |
| 46,000 | 8 | 22 | 30 | 21 | 29 |
| 48,000 | 8 | 23 | 31 | 22 | 30 |
| 50,000 | 8 | 24 | 32 | 23 | 31 |
| 52,000 | 8 | 25 | 33 | 24 | 32 |
| 54,000 | 8 | 26 | 34 | 25 | 33 |
| 56,000 | 8 | 27 | 35 | 26 | 34 |
| 58,000 | 8 | 28 | 36 | 27 | 35 |
| 60,000 | 8 | 29 | 37 | 28 | 36 |
| 62,000 | 8 | 30 | 38 | 29 | 37 |
| 64,000 | 8 | 31 | 39 | 30 | 38 |
| 66,000 | 8 | 32 | 40 | 31 | 39 |
| 68,000 | 8 | 33 | 41 | 32 | 40 |
| 70,000 | 8 | 34 | 42 | 33 | 41 |
| 72,000 | 8 | 35 | 43 | 34 | 42 |
| 74,000 | 8 | 36 | 44 | 35 | 43 |
| 76,000 | 8 | 37 | 45 | 36 | 44 |
| 78,000 | 8 | 38 | 46 | 37 | 45 |
| 80,000 | 8 | 39 | 47 | 38 | 46 |
| 82,000 | 8 | 40 | 48 | 39 | 47 |
| 84,000 | 8 | 41 | 49 | 40 | 48 |
| 86,000 | 8 | 42 | 50 | 41 | 49 |
| 88,000 | 8 | 43 | 51 | 42 | 50 |
| 90,000 | 8 | 44 | 52 | 43 | 51 |
| 92,000 | 8 | 45 | 53 | 44 | 52 |
| 94,000 | 8 | 46 | 54 | 45 | 53 |
| 96,000 | 8 | 47 | 55 | 46 | 54 |
| 98,000 | 8 | 48 | 56 | 47 | 55 |
| 100,000 | 8 | 52 | 60 | 48 | 56 |
| 150,000 | 8 | 56 | 64 | 49 | 57 |
| 200,000 | 8 | 60 | 68 | 50 | 58 |
| 300,000 | 8 | 63 | 71 | ||
| 500,000 | 8 | 64 | 72 | ||
| 1,000,000 | 8 | 65 | 73 | ||
