What is a card number on UK debit and credit cards? (2024)

Got your first debit or credit card? You’ll need to know how it works, including what the different numbers mean.

Read on for everything you need to know, as we’ve put together an at-a-glance guide to card numbers for UK debit cards and credit cards.

And if you’re still shopping around for a new debit card, make sure to check out the Wise card from Wise, a money services provider. It works in multiple countries worldwide, letting you spend in the local currency for low fees and great exchange rates.

Please see the Terms of Use for your region or visit for the most up-to-date information on pricing and fees.

What is the card number on a debit and credit card?

The long number on the front or back of your debit or credit card is unique to your card and account. However, it’s different from your account number.

Debit and credit card numbers are usually 16 digits long, broken up into four groups of four numbers. This differs from your account number, which on a standard bank account is usually 8 digits long.

Issuer Identifier Number (IIN)

The Issuer Identification Number or IIN is the first 8 digits of your 16 digit card number. It is used to identify which company issued the card, and to help financial institutions to route transactions correctly.

Unique account number

Following the IIN, the next digits of your debit or credit card number are made up of your unique account number. This is the number used to identify that particular card and account.

Verification digit

The very last number on your debit or credit card long number is called the verification digit, or ‘check digit’. This is used to validate the card number, to check it’s been entered correctly (for example, when shopping online) and that the card is authentic.

Expiration date on a credit and debit cards

UK debit and credit card numbers also feature expiration dates, which is when the card expires and can no longer be used.

This number will be displayed in this format: MM/YY. So, a card expiring in January 2025 will have an expiration date of 01/25.

What is the CVV number on a debit or credit card?

On debit and credit cards, the Card Verification Value (CVV) is usually found on the back, next to the signature box.

So, what is a CVV number on a credit card used for? It’s primarily for online shopping, to prove to the merchant that you have the physical card. This helps to keep you safe when paying for things online, and to prevent fraud.

📚 Read more: UK travel credit cards you can use abroad

What is a sort code on a debit card?

Many debit cards also include a sort code. This refers to the current account that the card is linked to, and it is used to identify the bank, building society or other account provider.

Wondering what is the account number on a card? You should find it next to your sort code, and it’s an 8-digit number identifying your bank account.

What is a roll number on a bank card?

If your debit card is linked to an account held with a building society, it may also feature a roll number. These are only used for UK building society accounts, and they can be anywhere up to 18 characters long.

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Please see the Terms of Use for your region or visit for the most up-to-date information on pricing and fees.

And that’s it - the lowdown on UK debit and credit card numbers, from the long number right through to all the other important digits on your card.

Please see terms of use and product availability for your region or visit Wise fees and pricing for the most up to date pricing and fee information.

This publication is provided for general information purposes and does not constitute legal, tax or other professional advice from Wise Payments Limited or its subsidiaries and its affiliates, and it is not intended as a substitute for obtaining advice from a financial advisor or any other professional.

We make no representations, warranties or guarantees, whether expressed or implied, that the content in the publication is accurate, complete or up to date.

What is a card number on UK debit and credit cards? (2024)

FAQs

What is a card number on UK debit and credit cards? ›

The long number on the front or back of your debit or credit card is unique to your card and account. However, it's different from your account number. Debit and credit card numbers are usually 16 digits long, broken up into four groups of four numbers.

What is my card number UK? ›

This is the long number on the front of your card. It's usually 16-19 digits long and is unique to you.

How to tell if a card number is credit or debit? ›

You can't tell whether a card is associated with a debit or credit account based on numbers alone. Still, you can usually find that out by looking at the card as most of them have a “credit” or “debit” label somewhere on the card.

How long is a card number UK? ›

The card number is the unique 16-digit number displayed on either the front or back of debit cards. You can find the cardholder's name on the front or back of your card.

What is the difference between a debit card and a credit card in the UK? ›

A debit card is linked to your bank account. It's usually your money that you're spending or withdrawing, unless you have an overdraft, which is a type of credit linked to your account. A credit card is a standalone account giving you access to a pre-agreed credit limit.

How many digits is a UK debit card number? ›

What is the card number on a debit and credit card? The long number on the front or back of your debit or credit card is unique to your card and account. However, it's different from your account number. Debit and credit card numbers are usually 16 digits long, broken up into four groups of four numbers.

What are the different numbers on a debit card in the UK? ›

The front of a debit card usually has a 16-digit Card Number, an 8-digit Account Number, a 6-digit sort code, the cardholder's name and the card's expiry date.

What part of a debit card is the card number? ›

You can usually find your debit card number printed or embossed on the front of the card, commonly around the center. Other essential card info is the: Expiration date—includes a month and a year, usually printed below the card number.

Where is the card number on a debit card? ›

Your 16-digit card number is usually printed on the front of your debit card. It is a long number that can be found embossed or printed on the card, usually in the middle. You can also find your card number on your bank account statements or transaction history if you have access to those documents online.

What is the debit card number example? ›

One of the most important parts of a debit card and often referred to as 'the long card number' (and also known as a Permanent Account Number or PAN), the card number consists of 16 digits in sections of four, for example, 1234 5678 9876 5432 and is required when making a purchase over the phone or online.

How many digits is an account number in the UK? ›

In the UK, most bank account numbers typically contain eight digits. Some UK banks do have shorter account numbers, but here the number '0' can be added in front to reach eight digits.

What is a UK virtual card number? ›

A virtual credit card is a temporary credit card number that you can use when shopping online. It does not exist as a physical card and you cannot use it to withdraw cash at an ATM. Just like a standard credit card, your virtual card will have a randomly generated 16-digit card number, a CVV code and an expiry date.

What is the sort code and account number in the UK? ›

Account numbers are eight digits long and sort codes are six digits long. You may be able to find your account number and sort code printed on your debit card, but not all debit cards will show these details. Account numbers and sort codes are used by financial institutions in the UK to facilitate money transfers.

What debit card is used in UK? ›

All major credit and debit providers are accepted across the UK, especially Visa and MasterCard. American Express and Diners Club may not be accepted in all restaurants, bars, cafes, and shops. In general though,, you'll be able to use your card in most places.

What is a debit card in the UK? ›

A debit card lets you spend the money that's available in your account. It helps you stay in control because your account balance is updated almost instantly with every payment you make. A credit card lets you borrow money to spend, up to an agreed limit, and pay it back later.

How does a debit card work UK? ›

It allows you access to the money in your bank account. This includes making purchases from your account or withdrawing cash from an ATM (cash machine). An alternative to a debit card would be to physically go to your bank and withdraw cash.

How do I find my 16-digit debit card number without a card? ›

There are several ways to retrieve your debit card number without the physical card, including using online or mobile banking, contacting your bank's customer service, accessing your account statements or transaction history, or visiting your bank's local branch.

How to find your 16-digit card number online? ›

Method 3: Online Bank Statement
  1. Log in to your net banking or mobile banking app.
  2. Search for your transaction history.
  3. Choose the transaction where you have used your debit card.
  4. You can find the debit card number by checking the transaction details.

What card number is 4111 1111 1111 1111 CVV? ›

Windcave eCommerce test details

We recommend using the test card 4111 1111 1111 1111 for Visa, 5431 1111 1111 1111 for MasterCard, 3711 1111 1111 114 for Amex, and 3600 0000 0000 08 for Diners. These can be used with any expiry date, 3 digit (4 digit for Amex) CVC and are suitable only for Windcave test accounts.

How do I find my card number? ›

Besides your physical card, you can usually find your card number on billing statements and in your profile online or in your bank's mobile app. Your credit card account number by itself usually isn't available for you to view. This helps protect your information.

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