A bank sort code is a six-digit number that identifies the specific branch of a bank where your account is held.

In the United Kingdom and Ireland, every bank branch has its own sort code. When you make a payment to someone else's account—whether by bank transfer, standing order, or direct debit—you need three pieces of information: the recipient's name, their account number, and their sort code. The sort code tells the payment system which branch to send the money to, and the account number identifies the specific account at that branch. Without the correct sort code, the payment may be delayed, sent to the wrong account, or rejected entirely.

Sort codes are written as three pairs of numbers separated by hyphens: for example, 20-17-80. You can find your own sort code on your debit card, in your online banking app, on paper statements, or by calling your bank. If you are sending money to someone else, you should ask them for their sort code directly or check any official documents they give you—never guess or use a number you find online without confirming it with the person or their bank.

Key Takeaways

  • A sort code is a six-digit number that identifies which branch of a bank holds an account, and you need it to send money to someone else.
  • Sort codes are formatted as three pairs of numbers (for example, 20-17-80) and appear on debit cards, statements, and in online banking.
  • The sort code works alongside the account number and account holder's name to route a payment to the correct place.
  • If you use the wrong sort code, the payment may arrive late, go to the wrong account, or be rejected by the bank.

Where to find your own sort code

Your sort code appears in several places. The easiest is your debit card: look at the bottom left corner, where you will see a series of numbers. The first six digits are your sort code. If you do not have your card handy, log into your online banking app or website—most banks display your sort code on the account details page or in a section labeled "Account Information" or "Payment Details."

Paper statements also show your sort code, usually near the top of the page alongside your account number. If you cannot find it anywhere, call your bank's customer service number (on the back of your card or on their website) and ask them to confirm your sort code. They will ask you to verify your identity before giving it to you.

How sort codes route your payment

When you enter a sort code into a payment form, the banking system uses it to identify the destination branch. The first two digits of the sort code identify the bank itself (for example, 20 might represent a major high street bank), and the last four digits pinpoint the specific branch. The payment system then uses the account number to find the right account within that branch.

This routing happens automatically and usually takes one to two working days for a standard bank transfer in the UK. If you use Faster Payments (a same-day service offered by most UK banks), the sort code and account number are processed the same way but the money arrives within a few hours instead. The sort code is essential to both routes—without it, the bank cannot locate the destination account.

What happens if you use the wrong sort code

If you enter an incorrect sort code, one of three things typically happens. The payment may be rejected outright by the receiving bank, which will send it back to you with an error message. Alternatively, the payment might be sent to a different branch of the same bank, where it will sit in a suspense account until someone notices the mismatch and either returns it or tries to match it to an account. In rare cases, the money might reach an account at the wrong branch, and you will have to contact that bank to retrieve it.

The process of recovering a misdirected payment can take several weeks. This is why it is crucial to double-check the sort code before you confirm a payment, especially for large amounts. If you are unsure, contact the recipient directly or call your bank and ask them to verify the sort code before you send the money.

Sort codes versus account numbers and IBANs

A sort code is not the same as an account number. Your account number is eight digits long and identifies your specific account; the sort code identifies the branch. Together, they form a complete address for your account within the UK banking system. You need both to receive a payment.

An IBAN (International Bank Account Number) is used for payments outside the UK and Ireland. An IBAN includes the sort code and account number but also adds a country code and check digits, making it longer (typically 22 characters for a UK account). If you are sending money internationally, you will usually need the IBAN rather than the sort code alone, though some banks still ask for both.

Sort codes for different types of accounts

Every type of bank account—current accounts, savings accounts, business accounts—has its own sort code. If you hold multiple accounts at the same branch, they may share the same sort code but will have different account numbers. If you hold accounts at different branches of the same bank, each account will have a different sort code.

Some specialist banks and building societies use sort codes in the same way as high street banks. Online-only banks also have sort codes, even though they do not have physical branches—the sort code still identifies which processing center handles the account. When you open a new account, your bank will provide the sort code as part of your account details.

Keeping your sort code safe

Your sort code is not secret information in the way your PIN or password is. It is printed on your debit card and statements, and you will share it with anyone who needs to send you money. However, you should never give out your sort code along with your account number and full name to someone you do not trust, because that combination could allow them to set up a direct debit or standing order against your account.

If you receive a message asking for your sort code, account number, and name together, verify that the request is genuine before responding. Your bank will never ask for these details by email or text. If you are unsure, hang up and call your bank directly using the number on the back of your card.

Frequently Asked Questions

Can I use someone's sort code to send them money if I do not know their account number?

No. You need both the sort code and the account number to send a payment. The sort code alone only identifies the branch; the account number identifies the specific account at that branch. Without the account number, the bank cannot process the transfer.

Do I need a sort code to receive money from abroad?

For payments from outside the UK and Ireland, the sender will usually need your IBAN instead of your sort code, though the IBAN contains your sort code as part of it. Ask the person sending you money which details they need—they should tell you whether to provide your sort code, account number, IBAN, or all three.

What if my bank does not show a sort code on my debit card?

Some newer debit cards do not print the sort code on the front. Check your statements, log into your online banking, or call your bank to find it. Every UK bank account has a sort code, even if it is not displayed on the card itself.

Can the same sort code belong to two different banks?

No. Sort codes are unique to each bank branch. Two different banks will never share the same sort code, which is why it is essential for routing payments correctly.

If I give someone my sort code and account number, can they take money from my account?

They cannot withdraw money directly, but they could set up a direct debit or standing order, which is why you should only share these details with people and organizations you trust. If you notice an unauthorized direct debit, contact your bank immediately to cancel it and request a refund.