Exam Exercise Four - 13 (Multiple Credits For Dependants) Ingrid Tower is a 45 year old widow. Her Net Income For Tax Purposes consists of rental income. She maintains a home for herself and her two children. Her 19 year old son has a physical disability that makes him wholly dependent on Ingrid for support. However, he does not qualify for the disability tax credit. He has no income of his own. Her daughter is 13 years old, is in good health, and has 2018 Net Income For Tax Purposes of $1,230. Determine Ms. Tower's maximum federal tax credits for 2018