Private preschools and kindergartens
Tuition
Nursery schools, preschools, and private kindergartens do not have to pay business and occupation (B&O) tax on income earned from caring for children under eight years old who are not in first grade or above.
You must include these amounts in gross income reported under the Child Care classification and then take an “Other” deduction with a description such as “Privately operated kindergartens, preschools, etc.”
You may not deduct amounts received for children eight years or older or enrolled in or above the first grade.