Your credit card PIN is a four-digit code that proves you are the cardholder when you use the card in person at an ATM or a PIN-enabled payment terminal.

The PIN (Personal Identification Number) is separate from your card number, expiration date, and CVV. It exists solely to verify your identity during in-person transactions. When you enter your PIN at a machine or terminal, the system checks it against the encrypted PIN stored by your card issuer. If the PIN matches, the transaction goes through. If it does not match after a set number of attempts (usually three), the card is temporarily blocked to prevent fraud.

Most credit cards do not require a PIN for everyday purchases at retail stores — you either swipe, insert, or tap the card, or you sign a receipt. The PIN is primarily for ATM cash withdrawals and, in some countries, for in-person debit-style transactions. In the United States, credit card PINs are less common than they are in Europe or Asia, where PIN-based payment is the standard.

Key Takeaways

  • Your credit card PIN is a four-digit code you set or receive from your card issuer, used to verify your identity at ATMs and PIN-enabled terminals.
  • The PIN is encrypted and stored separately from your card number, so knowing your card number does not reveal your PIN.
  • You can usually change your PIN through your card issuer's website, mobile app, or by calling customer service.
  • If you forget your PIN, you can reset it by contacting your card issuer directly; you will need to verify your identity first.
  • A blocked card from too many wrong PIN attempts typically unlocks within 24 hours, or you can call your issuer to unlock it sooner.

When You Actually Need to Enter Your PIN

You need your PIN when you withdraw cash from an ATM using your credit card. The machine prompts you to enter the code before dispensing money. Some credit cards allow cash advances at ATMs, while others do not — check your card's terms to confirm whether ATM withdrawals are available on your account.

In the United States, most retail transactions do not require a PIN. You can tap, insert, or swipe your card without entering a code. However, in other countries — particularly in Europe, the UK, Canada, and Australia — retailers often require a PIN for all in-person card payments, even small purchases. If you travel internationally, ask your card issuer whether your PIN will work abroad or whether you need to set one up before you leave.

Some merchants in the US do accept PIN-based credit card payments, though it is uncommon. Gas stations, for example, may offer a PIN option alongside the standard signature or contactless payment. The choice is usually yours.

How to Set or Change Your Credit Card PIN

If your card issuer assigned you a temporary PIN when you opened the account, you should change it to a code only you know. Most issuers let you set your PIN through their website or mobile app. Log in to your account, look for a "PIN" or "Security" section, and follow the prompts to create a new four-digit code.

If the website option is not available, call the customer service number on the back of your card. A representative will verify your identity by asking for your Social Security number, date of birth, or answers to security questions you set up when you opened the account. Once verified, they can set a new PIN over the phone or send you a temporary one by mail.

Choose a PIN that is not your birthday, anniversary, or any sequence that appears on your card. Do not use 1111, 0000, or other obvious patterns. Write it down and store it somewhere secure — not in your wallet or phone — or memorize it and do not write it down at all.

What Happens If You Forget Your PIN

If you forget your PIN and need to use it immediately, you have limited options. Most ATMs will not let you retry after three wrong attempts; the card becomes temporarily locked. You can usually try again after 24 hours, but that does not help if you need cash now.

The fastest solution is to call your card issuer's customer service line. Have your card and a form of ID ready. The representative will verify your identity and can either reset your PIN immediately or send you a temporary one. Some issuers will let you set a new PIN over the phone right then; others will mail a temporary code and ask you to change it online within a certain timeframe.

If you are traveling and locked out of your PIN, call your issuer's international customer service line (the number is usually on your statement or the back of your card). They can often unlock your card and reset your PIN while you wait, though the process may take a few minutes.

PIN Security and Fraud Protection

Your PIN is encrypted the moment you enter it into an ATM or terminal. The machine does not display it on the screen, and the card issuer never stores it in plain text. Even if someone steals your card number, they cannot use it to withdraw cash from an ATM without your PIN.

To keep your PIN secure, cover the keypad with your hand while you type, and never tell anyone your PIN — not a bank employee, not a family member, not a merchant. Legitimate card issuers and banks will never ask for your PIN by phone, email, or text. If someone contacts you claiming to be from your bank and asks for your PIN, hang up and call the number on your card or statement.

If you believe your PIN has been compromised, contact your card issuer immediately and request a new one. There is no charge for changing your PIN, and the issuer can do it while you are on the phone.

What Happens If You Enter the Wrong PIN Multiple Times

Most ATMs and PIN-enabled terminals allow three attempts before locking the card. After the third wrong entry, the machine displays a message saying your card is temporarily blocked and you cannot use it at that terminal or any other for a set period — usually 24 hours.

This block is a security measure to prevent someone from guessing your PIN through repeated attempts. You do not need to do anything; the card will unlock automatically after 24 hours. However, if you need to use your card sooner, call your card issuer's customer service line. A representative can unlock it immediately after verifying your identity.

The block applies only to PIN-based transactions. If your card is locked due to wrong PIN attempts, you can still use it for contactless payments, chip transactions, or swipe transactions that do not require a PIN — depending on what the merchant accepts.

PIN Versus Other Card Security Features

Your PIN is one layer of security, but it is not the only one. Your card also has a CVV (Card Verification Value) — a three- or four-digit code on the back used for online and phone purchases. The CVV is different from your PIN and serves a different purpose. The CVV proves you have the physical card when you cannot enter a PIN; the PIN proves you are the cardholder when you are using the card in person.

Your card number itself is not a security code. Merchants see it during transactions, and it appears on receipts and statements. Your PIN, by contrast, should never be shared or written down anywhere a merchant or anyone else can see it.

If your card is lost or stolen, the PIN protects your account from unauthorized ATM withdrawals, but it does not protect you from fraudulent purchases made without a PIN (such as online or phone orders). Contact your card issuer immediately if your card is lost or stolen, and they will cancel it and issue a replacement.

Frequently Asked Questions

Can I use my credit card PIN for online shopping?

No. Your PIN is only for in-person transactions at ATMs and PIN-enabled terminals. Online purchases use your card number, expiration date, and CVV instead. If a website asks for your PIN, it is not a legitimate payment page — stop and do not enter any information.

What if my card issuer never sent me a PIN?

Some issuers do not assign PINs by default, especially if you rarely use ATMs. Contact your card issuer and request one. They will either set a temporary PIN and mail it to you, or let you create one over the phone or through your online account.

Is my PIN the same as my online banking password?

No. Your PIN is for the card itself; your online banking password is for accessing your account on the issuer's website or app. They are separate codes, and you should never use the same code for both. If your password is compromised, your PIN remains secure, and vice versa.

Can I change my PIN whenever I want?

Yes. You can change your PIN as often as you like through your card issuer's website, app, or by calling customer service. There is no limit on how many times you can change it, and there is no charge.

What should I do if I see an ATM transaction I did not make?

Contact your card issuer immediately and report the unauthorized withdrawal. Provide the date, time, location, and amount. The issuer will investigate and, if the transaction is confirmed as fraudulent, will reverse the charge and issue you a new card with a new PIN.