To change your bank account in Zerodha, you have to follow these steps- - Go to the official Zerodha website  - Click on the 'Downloads & resources' link. It is in the footer 'Support' section. - After downloading the 'Account modification form' under the 'Change request forms', print it and fill it up.  - Add the relevant credentials with the new bank account and send the hard copy of the form to the Zerodha Office in Bangalore.