To activate a CitiBank Debit card, open the Citibank website in your browser.
Then, find the sign-on button in the top right corner. You should set up online access when you apply for the checking account. When the home page is open, find the login form. Then, in the login form, type your user ID and password. Click on the blue Sign-on button. On the dashboard of your CitiBank account, you can see the balances of your CitiBank accounts.
These can include checking and credit accounts. Find your checking account and click on it. On the checking account page in the “I want to” section, click on the “View all services button.” On the banking services page, click “Activate ATM debit card.” Verify your information on the “Activate your card” page and click the blue “Activate Now.” Wait a few moments, and you should see the “Success” page with confirmation that your debit card has been activated. That is how you can activate a CitiBank debit card online.