CVV2 on Visa, MasterCard, or Discover

CVV2 location on card back

The number is printed on your Visa, MasterCard, and Discover cards in the signature section on the back of the card. It is the last 3 digits AFTER the card number.

CVV2 on American Express

CVV2 location on American Express card front

American Express cards show the CVV2 printed above the imprinted card number on the front of the card. American Express also calls this the CID number.