Your daughter will get nothing for claiming a dependent if she did not work. The child-related credits like additional child tax credit are based on having income from working. So, claiming her child with only food stamps would be useless.
If you have supported your daughter and her child then you should be able to claim both of them as your dependents and file as HOH.
IRS interview to help determine who can be claimed:
https://www.irs.gov/help/ita/who-can-i-claim-as-a-dependent
Am I Head of Household?
https://ttlc.intuit.com/questions/1894553-do-i-qualify-for-head-of-household
https://ttlc.intuit.com/questions/2900097-what-is-a-qualifying-person-for-head-of-household
If you qualify as Head of Household, when you enter your marital status (single or married filing separately) into MyInfo, and then enter your qualifying dependent, TurboTax will offer HOH as your filing status.
To claim a grandchild as your dependent
When you enter the child’s name in My Info, you will be asked “What’s your relationship to [child’s name]?”
Choose “another person”
a drop down menu will appear that lets you choose grandchild
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
