Can the account opening fee be refunded?

The account opening fee is non-refundable. However, a refund request can be made if Zerodha fails to open the account after ten working days of collecting all the necessary documents. Zerodha depends on the exchanges, KYC Registration Agency (KRA), and other third parties to open an account. The account may also be put on hold for rectifications. See, Why was the account opening application put on hold?

If the account opening fee was paid multiple times, create a ticket along with the payment proof. The refund will be credited to the bank account within seven working days. Contact the bank if the refund is not credited after seven working days.