No, having a negative balance in your demat account would affect your CIBIL score. Your CIBIL score is based on your credit transactions history i.e your short-term or long-term loans and credit card payments. However, maintaining a good CIBIL score is important for raising a loan in the future. You can maintain your score by timely payments of your loan and reducing your credit card payments.

To open a Demat account visit - https://www.kotaksecurities.com