When you get a new credit card in the mail, you may receive instructions for both activating and registering your card. Activating and registering a credit card are two separate actions. Credit card activation confirms that you’ve received your card. You can’t start using your credit card until you activate it. When you register your credit card, you typically gain access to online and mobile account tools that may make managing your credit easier.
How to Register a Credit Card
5 min read
Last Updated: January 13, 2026
Next steps
See if you're pre-approved
View all Discover credit cards
See rates, rewards and other info
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