In addition to paying your account through the website, you can activate alerts and manage your account. Then, follow the prompts to make the payment. Have your checking account number and your bank routing number handy.Once you’ve registered, you can log in to your Best Buy account online with your user ID and password.Provide the credit card number, your name, the card’s security code and the last four digits of your Social Security number.Visit the credit card registration page on Citibank’s website.To pay your bill online, you’ll need to use your My Best Buy credit card login.
