Capital One Debit Card

Capital One Activate Card Online, by Phone or App Instructions

With over 55 million customers worldwide, Capital One is one of the most trusted financial institutions. One reason for that is that their credit cards come with low interest rates, and they often offer rewards for their most loyal clients. They also offer three convenient ways of activating the Capital One credit card: by phone, online through, or using the Capital One Mobile App. Whichever option you choose, the process is quick and easy. Most importantly, you can start using your card as soon as you activate it.

Activate Your Capital One Credit Card Online

When you go to, you will get two options — Sign In & Activate and Enroll & Activate. If you already have an account, choose the first option and log in using your username and password. Then, for the next step, you will need to have your credit card with you. To activate your Capital One credit card, you need to enter the three-digit security code on the back of your card. When you get a confirmation on the website that the activation process was successful, your card is ready to use.

If, on the other hand, you don’t have an account, choose the option Enroll and Activate. To register on the Capital One Website, you will need to provide some personal information: your Social Security number, date of birth, and your bank account number. Once you get online access, follow the steps above to activate your Capital One credit card.

Activate Your Capital One Credit Card by Phone

If you want to activate a Capital One credit card by phone, all you need to do is call the automated line for Capital One credit card activation. The number is 1 800 678 7820. As the line is automated, you just need to follow the instructions and your card will be activated in no time.

Activate Your Capital One Credit Card with a Mobile App

To activate your card through the Capital One mobile app, you’ll need to download it first. There is an available version for both iOS and Android. When you download the app, you can log in using the same username and password as for your Capital One online account. If you don’t already have one, see above how to register for an account. Then, when you open the app, go to your profile and then to Account Settings. You should see your new card there. Now all you need to do is just click on Activate credit card and your card is all set.

Tips for New Credit Card Users:

  • Sign the back of your card before using it.
  • Read your cardholder agreement carefully.
  • Use the Capital One mobile app to simplify your finances.
  • Set up a PIN. You should get a personal identification number along with your card, but if you don’t, you can use your online account to set it up.


Activating your Capital One credit card can be done easily. Whether you choose to do it online through, on the phone, or through an app, you’ll be able to use your card promptly.