Hi

You have not mentioned the category you belong to, so I am  assuming  you from general category

It's quite difficult to predict how much marks is required to take admission in self finance/management quota seats in chennai as

cut off marks for medical colleges keeps changing every year depending upon various factors like number of students that appeared in the exam, kind of marks obtained by them , toughness level of the examination etc.

But when we go through previous data then it suggests that to get management quota seat in private medical college in chennai you should score at least around 400 marks in NEET 2020 examination

For example,

in neet 2019,  391 marks  for general category got a management quota seat in Tagore Medical College and Hospital, Chennai under Tamil nadu state quota

By now you must have calculated your expected score in neet 2020,  to get the list of colleges in which you have chances, you can go through our college predictor

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

It gives you a personalized report with top college in which you have chances for admission , with the help of predicted colleges you can make better choice while filling your choices of colleges during your counselling

Thankyou