I’m buying a textbook online from my college bookstore. Arriving at the payment method page it asks for Name (card name), expiration date, card security code, and account number. I’m confused as I’ve never been asked for my account number, which I assume is my bank account number, when shopping online. My question is, do I enter my account number or is it possibly an error on the site and I’m supposed to enter my card number?



Your account number is the 16 digit CARD number on the front of the card. That is the ONLY account number for a credit card, and the website treats EVERY Visa/MasterCard as a credit card.