To pay a Target REDcard bill online, a person can log in to the Manage Your Bills section of the official Target website. One will have to register to use the online bill paying services, by signing up for Target's Free Online Bill Management.
Target REDcards can either be credit or debit cards, and both can be managed and paid online. Target REDcards are Visa cards that are subject to credit approval. Enrolling in online bill paying is free, and is only open to current REDcard holders. Instructions on how to apply for a Target credit or debit REDcard are also located on the Manage Your Bills section of the site.