Demat Accounts are like bank accounts and also operate like on, except they are for investment instruments. Just like once we open bank accounts and forget, its similar for Demat account. If you have no shares in your Demat or would no longer like to trade or invest, it is wiser to close the inactive Demat account.
For keeping the Demat account active, there are fees and maintenance charges.
First, it’s not entirely possible to close the Demat account online. One has to submit the application for ‘Closure of Account’ in person with a hard copy with the necessary documents. The closure form is available online which you can download so it’s not entirely offline either.