i born in Karnataka, but completed SSC in Maharashtra. Do i need domicile certificate for CET ???
See if your Father/Mother is in the service of Govt. of India or Govt. of Maharashtra then you can get the Domicile. Also if you have done your SSC from a disputed region of Maharastra-Karnataka then also you can get a domicile of Maharastra. If your parents is a domicile of Maharastra then also you will get the domicile. Apart from this there are no provisions which can be appropriate for your state.
Also you can refer this link for Domicile rules in Maharastra:
Maharastra Domicile Rules Answered by Priyanka Sarkar
I hope this answer helps. All the very best for your future endeavors!