Bank codes demystified: IBAN and SWIFT

Banks and other financial institutions keep track of your money using a system of unique codes assigned to each bank or account they do business with. Different countries use different systems, and the two most common are SWIFT and IBAN codes, sometimes also referred to as BIC and IBAN codes.

SWIFT codes vs. IBAN numbers

What is a SWIFT code?

SWIFT is simply a worldwide bank ID. A SWIFT code can also be referred to as a BIC or Bank Identifier Code but is, more often than not, referred to as SWIFT.

Unlike IBAN, which identifies specific bank accounts, SWIFT refers to a specific bank only — including banks in Ireland. Some 40,000 banks and offices worldwide are part of the SWIFT network.

What does a SWIFT code look like?

A SWIFT number is an alphanumeric number containing information that identifies a bank and branch. It can be 8 or 11 characters long, depending on which bank office it refers to.

An example of a SWIFT code is this one for Bank of Ireland: BOFIIE2DXXX.

We can break down this SWIFT code to discover:

• A four-letter bank code.
• A two-letter country code.
• A two-letter location code.
• A three-digit branch code.

Where can I find my SWIFT code?

In Ireland, you can find your SWIFT number on your bank statement, by signing in to your online banking system or by calling your bank.

If you’re sending money internationally and need a SWIFT number, ask your recipient for the SWIFT number of the bank to which their account belongs.

What is an IBAN code?

Short for International Bank Account Number, an IBAN code is a unique number assigned to specific bank accounts involved in international business. Though not exclusive to Europe, IBAN is used in most European countries including Ireland. Not all countries use IBAN numbers, such as the United States, but specifying the IBAN number will usually make for faster transactions.

What does an IBAN code look like?

An IBAN number is an alphanumeric number containing information that identifies a bank, country and account number. With lengths fixed by country, IBAN codes can be up to 34 characters.

An example of an IBAN code at Allied Irish Banks is IE 79 BOFI 931152 123456 78.

Breaking down our Ireland IBAN code, we find:

• A two-letter country code.
• A two-digit transaction number.
• A four-letter bank code.
• A six-digit bank sort code.
• A unique number specific to the bank account.

Where can I find my IBAN number?

You can find your IBAN number on your bank statement or by signing in to your online banking system.

If you’re sending money internationally and need an IBAN number, ask your recipient for the IBAN number of their deposit account.

Bottom line

The mysterious IBAN and SWIFT codes are anything but: They identify specific banks among the many financial transactions conducted worldwide among bank accounts. And they’re especially important when it comes to international money transfers.

Learn more about getting the best rates and fees to friends, family and businesses abroad in our guide to international money transfers.

Frequently asked questions

• Are SWIFT and BIC codes the same thing?

  Yes. The confusion stems from the fact that the SWIFT system also handles bank identifier codes — or BIC. A bank’s BIC will be the same as its SWIFT code.

• Do banks in Ireland use IBANs?

  Yes. Banks in Ireland use IBANs to identify specific banks or account numbers. SWIFT codes are also used.

• How do I make a wire transfer?

  To initiate a wire transfer, visit your local bank, go to a money transfer office or use an online money transfer specialist. Generally, you’ll complete a form indicating your personal banking information, your recipient’s name and banking information and the amount you’re sending. Once your transaction is complete, you’ll typically receive a tracking number to confirm that your recipient received your funds.