My wife has account in zerodha and has been opened 2 years back. But due to some personal reason we couldn’t start trading. But now I want to start investing in Coin- direct mutual fund. But my query is since I am going to transfer the fund first time to my demat account, as per my knowledge it will be deducted 600 as annual maintenance(previous 2 financial years). Also this is my first demat account and I am curious about BSDA. Can I convert my demat account to BSDA to avoid the maintenance charge. Could you please help me on this?