An IBAN is your bank account number in a format that works across borders

An IBAN (International Bank Account Number) is a standardized account identifier that lets banks in different countries send and receive money to your account. It combines your country code, bank code, and account number into one long string of letters and numbers. When someone outside your country needs to pay you—or when you need to send money internationally—an IBAN is often the routing information they'll ask for instead of a domestic account number.

IBANs exist because each country's banking system used to have its own way of identifying accounts. A German bank couldn't easily read a UK account number, and vice versa. The IBAN standard, created in 1997, solved that by giving every account a consistent format that any bank in any country can read. Today, most countries in Europe, the Middle East, Africa, and parts of Asia use IBANs. The United States does not—U.S. banks use routing numbers and account numbers instead.

Key Takeaways

  • An IBAN is a standardized account number format used for international transfers; U.S. banks do not issue IBANs.
  • Your IBAN contains your country code, bank identifier, and account number, and is typically 15 to 34 characters long depending on your country.
  • You can find your IBAN on your bank statement, in your online banking portal, or by calling your bank directly.
  • International transfers using an IBAN are slower and more expensive than domestic transfers, and may take three to five business days.
  • If you provide an incorrect IBAN, the transfer may be rejected or sent to the wrong account; always double-check before confirming.

How an IBAN is structured

An IBAN always starts with a two-letter country code (GB for the United Kingdom, DE for Germany, FR for France, and so on). After that come two check digits—numbers that banks use to verify the IBAN is valid before processing a transfer. The rest of the IBAN contains your bank's code and your account number, formatted according to that country's banking rules.

The total length varies by country. A UK IBAN is 22 characters, a German IBAN is 22 characters, and a French IBAN is 27 characters. The format is always letters and numbers only—no spaces or special characters, though banks often print them with spaces for readability. When you enter an IBAN into a payment system, remove the spaces.

Here is what each part means: the country code tells the receiving bank which country's banking system to use; the check digits allow the receiving bank to verify the IBAN is real before sending money; the bank code identifies which bank holds the account; and the account number is your specific account at that bank.

Where to find your IBAN

Your bank statement is the fastest place to look. Most banks print the IBAN on the front page or in a section labeled "Account Details" or "Your Account Information." If you use online banking, log in and navigate to your account settings or account overview—the IBAN is usually displayed there alongside your account number and sort code (in the UK) or routing number (if your bank operates internationally).

If you cannot find it on your statement or online, call your bank's customer service line and ask for your IBAN. Have your account number and sort code or routing number ready. Some banks will email it to you; others will read it over the phone. Do not share your IBAN with anyone you do not trust to receive money from or send money to, though an IBAN alone cannot be used to withdraw funds—a thief would also need your PIN or online banking password.

IBAN versus other account identifiers

If you live in the United States, your bank does not issue an IBAN. Instead, U.S. banks use a routing number (nine digits that identify your specific bank branch) and your account number (which identifies your account at that branch). When a U.S. bank receives an international transfer, it converts the sender's IBAN into routing and account information on the receiving end.

In the UK and Europe, banks also issue a sort code (a six-digit number that identifies the bank and branch) alongside the IBAN. Some older payment systems still ask for a sort code and account number instead of an IBAN, but the IBAN is now the standard for all international transfers. If you are sending money from outside the UK to a UK account, you will need the recipient's IBAN, not their sort code.

Other countries use different systems. Canada uses a transit number and account number; Australia uses a BSB (Bank-State-Branch) code and account number. When sending money internationally, always ask the recipient which format their bank requires—do not assume an IBAN will work everywhere.

What happens when you use an IBAN for a transfer

When you initiate an international transfer using an IBAN, your bank sends the payment through a network of correspondent banks—intermediary banks that specialize in moving money between countries. Your bank sends the money to a correspondent bank in the recipient's country, which then routes it to the recipient's local bank. Each step takes time and may involve a fee.

The transfer usually takes three to five business days, though it can take longer if the receiving bank is in a country with slower banking infrastructure or if there are compliance checks. Your bank will deduct the transfer fee from your account before sending the money; the recipient's bank may also deduct a fee from the amount received. Always ask your bank for the total cost before confirming an international transfer.

If you provide an incorrect IBAN, the receiving bank will reject the transfer and send the money back to your account—but this can take an additional week or two. Some banks will attempt to match a slightly wrong IBAN to the correct account if the error is minor, but do not rely on this. Always verify the IBAN character by character before confirming a transfer.

IBAN fraud and security

An IBAN alone is not enough for someone to steal money from your account. A thief would need your IBAN plus your online banking password, PIN, or other authentication method. However, scammers do sometimes use fake IBANs to trick people into sending money to the wrong account. Always verify an IBAN directly with the person or organization requesting the payment—call them using a phone number you know is correct, rather than using contact information from an email or text message.

If you send money to an IBAN that turns out to be fraudulent, contact your bank immediately. Depending on when you report it and which country you are in, your bank may be able to recall the transfer or freeze the receiving account. The sooner you report it, the better your chances of recovery. Keep records of all international transfers, including the IBAN used, the date, the amount, and any confirmation number your bank provided.

Frequently Asked Questions

Can I use an IBAN to receive money from the United States?

Yes. U.S. banks can send money internationally using an IBAN, though the process goes through correspondent banks and takes longer than a domestic transfer. Your U.S. sender will need to use their bank's international transfer service and provide your IBAN. Some U.S. banks charge higher fees for international transfers than domestic ones.

What if I give someone the wrong IBAN by mistake?

The receiving bank will reject the transfer if the IBAN is invalid or does not match any account in their system. The money will be returned to your account, but this can take one to two weeks. If the IBAN is valid but belongs to someone else, the money may be deposited into their account. Contact your bank immediately if this happens—they may be able to recover it, but speed matters.

Do I need an IBAN to receive money from another country?

It depends on the sender's country. If they are sending from Europe, the Middle East, Africa, or most of Asia, they will need your IBAN. If they are sending from the United States, they will use your routing number and account number instead. Ask the sender which information their bank requires.

Is my IBAN the same as my account number?

No. Your account number is just the digits that identify your account at your bank. Your IBAN includes your country code, bank code, and account number all together in one standardized format. Your bank statement will show both.

Can someone withdraw money from my account if they have my IBAN?

No. An IBAN is routing information only—it tells a bank where to send money, not how to access an account. A thief would also need your online banking password, PIN, or other authentication to withdraw funds. Treat your IBAN like you would a mailing address: it is safe to share with people who need to send you money, but do not share it with strangers.