If you have never logged in to the Citi credit card website, you will see an option at Citi.com to register. When you click that link, it prompts you to provide personal information and account-specific information over a four-step process. You should have your Citi card handy, as the site prompts you to enter the card information, among other things. The site also prompts you to choose a user ID and password. Choose a user ID that you can remember and a password that is fairly complex. Many different banks and other online institutions advise using a combination of numbers, lower-case letters and upper-case letters (and special characters such as exclamation points, dollar signs, and others, where they are allowed). This minimizes the threat of fraudulent access to the account.
After you have set up your account, you can log in with your newly created ID and password. On the homepage after you log in successfully, you can see a link to make a payment. After clicking that link, you can specify the amount you want to pay towards your balance and when you would like Citi to process that payment.Learn more about Credit & Lending