Yes. You can link your existing DP with your trading account at Upstox. We recommend you only link your existing demat account if you are mostly into intraday trading. It is also recommended you open a new demat account with Upstox. This will make buying & selling of shares seamless for you. If you wish to link an existing demat account, it too can be done. However if you can buy shares through your Upstox account but you will need to sell those through your existing demat provider.While selling shares through other brokers linked to the DP account, any charges that the other broker charges may apply.Upstox on the other hand doesn't charge you when you buy shares. A mere charge of ₹15 per scrip is charged when you sell your shares using an Upstox demat account. Open an online demat account with Upstox.