Determine the maximum contribution that can be made to a Keogh plan in each of the following cases. In all instances, the individual is self-employed, and the self-employment tax reduction has already been taken.

Required:

1. Self-employment income of $61,600.
2. Self-employment income of $61,600 and wage income of $31,500.
3. Self-employment income of $120,000.
4. Self-employment income of $318,000.

Determine the maximum contribution that can be made to a Keogh plan in each of the following cases. In all instances, the individual is self-employed, and the self-employment tax reduction has already been taken. Required: a. Self-employment income of $61,600. b. Self-employment income of $61,600 and wage income of $31,500. c. Self-employment income of $120,000. d. Self-employment income of $318,000