@rniccola1 ,
You can be a dependent of your adult child if your adult child provides more than half your support, and if your taxable income is less than $4150. Social security is not taxable income but it is included in support. There is a support worksheet in publication 501 that may help. https://www.irs.gov/forms-pubs/about-publication-501
Briefly, add up your total support needs; travel, clothing, entertainment, medical care. Your food and housing would be a portion of the food bill, utilities, insurance, and rent for the home where you live with your daughter. (If 5 people live in the home, 1/5 of the expenses count as your support.) After adding up all your support needs, determine who pays for them (you, your daughter, charities, government aid, and so on). If your daughter provides more than half your total support, she can claim you as a dependent.
It is not necessary that you live in the same home as your adult child for her to claim you as a dependent. But the fact that you do live there more than half the year will allow her to use you as a qualifying person for head of household status, if she is otherwise eligible (unmarried, maintaining her own home, etc.)
