The father is now receiving SSI. So, his 2 daughters are now receiving Social Security funds too.  Their mother has been made the Representative Payee for both girls. Each girl will receiving $543 per month. 

1) How do you determine how much rent/food do you charge each girl?

2) As for clothing that is easy.

3) I think both girls receive Mi-Child

4) You are allowed so much for  miscellaneous stuff.

5) Funds leftover are allowed to be put into a savings account under each girl's name.

Will any of these funds be considered taxable income to the Representative or an individual child?

Can the representative use a 529 to set aside any extra funds. 

Thank you for any assistance.