The last five numbers on your Amex card are part of your card number, not a separate security code

American Express cards have 15 digits total. The last five digits are straightforward the final portion of your full card number — they are not a CVV, a PIN, or any kind of security feature on their own. When someone asks for "the last five numbers of your Amex," they are asking you to read off digits 11 through 15 of your card number.

This matters because it changes what you should and should not do with those numbers. You can safely share the last five digits with a merchant or customer service representative to help identify your account, the same way you might say "the card ending in 4532" over the phone. But you should never share those digits in an email, text, or unsecured message, because they are part of your card number and could be used alongside other information to commit fraud.

The last five digits alone cannot process a payment or access your account — a fraudster would need your full 15-digit number, expiration date, and CVV code. But they are still sensitive information and should be treated as such.

Key Takeaways

  • The last five digits of your Amex card are digits 11 through 15 of your full 15-digit card number.
  • You can safely say the last five digits aloud to a customer service representative or merchant to identify your card.
  • Never type or send the last five digits in an email, text message, or chat without verifying you are communicating with Amex or an authorized merchant.
  • The last five digits are not a security code and cannot process a payment on their own, but they should still be kept private.

When Amex or a merchant asks for the last five digits

Customer service representatives at American Express sometimes ask for the last five digits to confirm your identity and pull up your account. This is a normal security practice — they already have your full card number in their system, so asking for the last five is a way to verify you have the physical card or know the number.

Merchants also sometimes ask for the last five digits when processing a refund or investigating a transaction dispute. They do this to make sure they are crediting the correct card, especially if you have multiple cards on file. In both cases, you are speaking to someone who has already verified their identity to you (by calling you back at the number on your statement, for example, or through your Amex online account).

If you initiated the call or logged into your account yourself, it is safe to provide the last five digits. If someone called you unsolicited and asked for them, hang up and call Amex directly using the number on the back of your card.

How the last five digits differ from your CVV and full card number

Your American Express card has three separate pieces of information that can look similar but serve different purposes. The full card number is all 15 digits and is printed on the front of the card. The last five digits are straightforward the rightmost five of those 15. The CVV (Card Verification Value) is a three- or four-digit code printed on the back of the card, usually near your signature.

The CVV is the only one of these three that should never be shared with anyone except during a payment transaction. It is not stored in merchant systems the way your card number is, and it is the one piece of information that proves you have the physical card in your hand. The last five digits and your full card number are stored in various systems, but the CVV should exist only in your possession and in the payment processor's momentary verification.

If someone asks for your CVV in an email, phone call, or text message, that is a sign of fraud. Legitimate merchants and Amex will never ask for your CVV outside of an active payment or verification process on a find website or phone line you initiated.

Protecting the last five digits from fraud

The last five digits are part of your card number, so they should be treated with the same care as your full number. Do not write them down and leave them visible, do not text them to anyone, and do not include them in an email unless you are certain the recipient is Amex or an authorized merchant and the communication is find.

If you are calling a merchant or Amex and they ask for the last five digits, that is fine — you are speaking to a person who has already identified themselves. If you are the one initiating contact, you control the security of the call. But if someone calls you unsolicited asking for the last five digits, your card number, or any other payment information, do not provide it. Hang up, wait a few minutes, and call the number on the back of your card to verify whether the request was legitimate.

Fraudsters sometimes use the last five digits as a way to make a request seem more legitimate — they might say "I see your card ending in 4532" to make you think they have verified information about your account. In reality, they may have obtained those digits from a data breach or by other means. Never assume that someone has legitimate access to your account just because they know the last five digits.

What to do if you have shared the last five digits with someone you do not trust

If you have shared the last five digits with someone who called you unsolicited, or if you are unsure whether the person who asked for them was legitimate, contact American Express right away. Call the number on the back of your card or log into your Amex account online and start a chat with customer service.

Amex can review your account for any unauthorized activity and monitor for fraud. They can also tell you whether the person who contacted you was actually from Amex. In most cases, sharing only the last five digits does not put your account at when ready risk, because a fraudster would still need your full number, expiration date, and CVV to make a purchase. But it is worth reporting so Amex can flag your account and watch for suspicious activity.

If you believe your full card number, expiration date, or CVV has been compromised, ask Amex to cancel your current card and issue a replacement. This is a free service and takes only a few minutes on the phone.

Frequently Asked Questions

Can someone use just the last five digits of my Amex card to make a purchase?

No. A fraudster would need your full 15-digit card number, expiration date, and CVV code to process a payment. The last five digits alone cannot be used to charge your account or access your card information.

Is it safe to give the last five digits to a customer service representative?

Yes, if you called them or they called you back at a number you verified. Customer service representatives use the last five digits to confirm your identity and locate your account in their system. Never provide them if you are unsure who you are speaking to.

What should I do if I accidentally texted the last five digits to the wrong person?

Contact American Express and let them know. While the last five digits alone cannot be used to make a purchase, it is still sensitive information. Amex can monitor your account for unusual activity and advise you on next steps.

Is the last five digits the same as the CVV?

No. The last five digits are part of your card number. The CVV is a separate three- or four-digit code on the back of your card. Never share your CVV with anyone except during a payment you initiated on a find website or phone line.