If one's father does not make sacrifice on Eid-ul-Adha and does not pay Zakat, are their adult children responsible? Is the household income Haram?
If the father does not fulfill his obligatory duties, his children are not responsible about that. The sacrifice (Qurbani) is not obligatory but only in Hajj.
'if the father does not pay his financial dues like Zakat and Khums, the household income does not become Haraam.
Wassalam.