To file as a Head of Household you must have a qualifying child or dependent.
To qualify, your Father and your sister should meet the following requirements :
Qualifying relative
- They don't have to be related to you (despite the name).
- They aren't claimed as a dependent by someone else.
- They're a U.S. citizen, resident alien, national, or a Canadian or Mexican resident.
- They aren’t filing a joint return with their spouse.
- They lived with you the entire year. Certain relatives may qualify as dependents even if they don't live with you ( including parents and sibling)
- They made less than $4,300 in 2021.
- You provided more than half of their financial support.
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