Hello candidate,

It's true that the income as well as the e w s certificate belongs from the area where your family is residing and not at the particular place in which the candidate is residing. So, as your father has been living in Bihar and has been working there for the past years so the income certificate avails for Bihar Valli and is not applicable to provide you e w s reservation in Karnataka.

Hope you found it helpful. if you have any further queries feel free to post it here.