To close a Capital One 360 account, you should first ensure that there are no pending transactions or negative balances. It is often advisable to withdraw or transfer any remaining funds from the account to another bank or account to prevent issues during the closure process. Once you have emptied the account, you can typically submit a request for closure through the Capital One 360 online banking platform. There may be an option to close the account in the account settings or preferences section. Alternatively, closure requests can sometimes be made through customer support channels. For the most accurate and updated information regarding this process, including specific instructions, it is best to refer to the Capital One 360 website or look for contact information to reach out for assistance directly.