Your credit card number is on the front of the card, usually in a row of 15 or 16 digits printed or embossed below your name.
The number runs horizontally across the middle or lower portion of the front face. On most cards, it is raised slightly so you can feel it — this raised printing is called embossing. Some newer cards print the number flat instead. Either way, it is the longest string of numbers visible on the card itself.
The card number is not the only number on your card, and mixing them up matters. Your card also displays an expiration date, a CVV security code, and sometimes a card ID number. Each one serves a different purpose, and merchants or payment systems may ask for different combinations depending on what you are doing.
Key Takeaways
- The credit card number is the 15 or 16-digit number on the front of your card, usually embossed or printed below your name.
- The expiration date (month and year) appears on the front lower right and tells you when the card stops working.
- The CVV is a 3 or 4-digit security code on the back of the card, used for online and phone purchases to verify you have the physical card.
- Never share your full card number, expiration date, or CVV together with anyone unless you initiated the transaction yourself.
- The card ID number, if present, is separate from the credit card number and is used by your bank for internal tracking.
The 15 or 16-Digit Card Number and What It Contains
The main credit card number is a sequence assigned by your bank or card issuer. The first digit or first few digits identify the card network — Visa cards start with 4, Mastercard with 5, American Express with 3, and Discover with 6. The next digits identify your specific bank and your account within that bank. The final digit is a check digit that the payment system uses to verify the number is real.
This number is what you enter when you make an online purchase, over the phone, or in person at a terminal. It is the number that appears on your monthly statement and the number you would give to a merchant if they ask for your card details. You should treat this number as sensitive information — do not share it in emails, texts, or with people you do not trust.
Visa and Discover cards have 16 digits. Mastercard and American Express cards have 16 digits as well, though American Express sometimes uses 15. The exact count depends on your card issuer, but the position on the card is always the same: front and center, below your name.
Where the Expiration Date Sits and Why It Matters
The expiration date appears on the front of the card in the lower right area, printed as two digits for the month and two for the year (for example, 08/26). This date tells you when your card stops working. On the last day of that month, the card will no longer process transactions.
Your bank sends you a replacement card before the expiration date arrives, usually 30 to 60 days before. The new card has a new expiration date, typically five years from the date it was issued. You need to enter the expiration date when you make online or phone purchases, and some in-person terminals ask for it as well.
If your card is lost or stolen, the expiration date does not protect you — the card number is what matters. However, if your card expires while you are in the middle of a subscription or recurring payment, that payment will fail unless you update your card information with the merchant.
The CVV Security Code on the Back
The CVV (Card Verification Value) or CVC (Card Verification Code) is a 3 or 4-digit number printed on the back of your card. For Visa, Mastercard, and Discover, it is 3 digits and appears in the signature strip area on the back right. For American Express, it is 4 digits and appears on the front of the card, above the card number on the right side.
The CVV is a security feature designed to verify that you have the physical card in your hand. When you make an online purchase or a phone purchase, the merchant asks for this code. They send it to your bank, which checks whether it matches the code on file. If someone has only your card number and expiration date but not the CVV, they cannot complete most online transactions.
Never share your CVV in an email or text message, and never enter it on a website unless you are certain the site is secure and legitimate. Your bank will never ask you for your CVV by phone or email. If someone contacts you asking for it, that is a sign of fraud.
The Card ID Number, If Your Card Has One
Some cards display a separate card ID number, usually a short sequence printed on the front near the card number or on the back. This number is different from the credit card number itself and is used by your bank for internal tracking and customer service purposes. If you call your bank, they may ask for this number to pull up your account quickly.
The card ID is not required for purchases and is not the same as your account number. You do not need to memorize it or share it with merchants. It exists mainly so your bank can identify which specific physical card you are using if you have multiple cards on the same account.
How to Protect Your Card Number
Your card number, expiration date, and CVV together are enough for someone to make online purchases in your name. Protect them by keeping your physical card in a secure location, not sharing photos of your card online, and never entering your information on unsecured websites.
When you shop online, look for a padlock icon in the browser address bar and make sure the URL starts with "https://" rather than "http://". These signs indicate the website is using encryption. If you are shopping on a public Wi-Fi network, use a VPN or wait until you are on a secure connection to enter payment information.
If your card is lost or stolen, contact your bank immediately. Most banks allow you to report fraud within a certain window and will not hold you responsible for unauthorized charges. The sooner you report it, the sooner they can cancel the card and issue a replacement.
What to Do If You Cannot Find Your Card Number
If your card is lost or damaged and you cannot see the number, you can find it in several places. Log into your online banking account or mobile app — your card number is usually displayed there. You can also call the customer service number on the back of a statement or on your bank's website, and a representative can read the number to you over the phone.
If you need to make a purchase before your replacement card arrives, ask your bank whether they offer a temporary card number or a digital wallet option. Many banks now let you add your card to Apple Pay, Google Pay, or Samsung Pay, which generates a temporary number for each transaction instead of using your actual card number.
Frequently Asked Questions
Is the card number the same as my account number?
No. Your account number is a separate identifier your bank uses internally. Your card number is tied to your account but is specific to that physical card. If you have multiple cards on the same account, each card has its own number.
Can someone use my card number without the CVV?
In person, yes — a merchant can run your card at a physical terminal without the CVV. Online or over the phone, most merchants require the CVV as an extra security step. However, some older or less secure websites may not ask for it, so the CVV alone is not a complete barrier to fraud.
What should I do if I accidentally shared my card number online?
Contact your bank immediately and report the incident. They can monitor your account for unauthorized activity and issue a replacement card if necessary. If you also shared your expiration date and CVV, ask your bank to cancel the card right away.
Why is my card number embossed instead of printed?
Embossing makes the number raised so it can be read by older card readers and imprinting machines. Newer cards often print the number flat because most transactions now happen online or through chip readers. Both methods are secure — the embossing is a legacy feature.
Can I use my card number without the physical card?
Yes, for online and phone purchases. For in-person purchases, most merchants now require the physical card or a digital wallet like Apple Pay. Some older merchants may still accept card-not-present transactions, but this is becoming less common.