When a child turns age 18, treat the child's earned income as nonexempt for the first whole fiscal month that the child is age 18.
Example: A high school student turns age 18 on 03/16. April is the first month that the earned income becomes nonexempt and is used to figure the April FS amount.
Prorate the total earnings equally among the working members if a child's earnings cannot be separated from other working members. Exclude the child's prorated share from the total amount.