The Differences and Functions of BIC and IBAN: How to Ensure the Accuracy and Security of International Remittances?

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When making an international wire transfer, understanding the difference and role of BIC and IBAN is crucial. In simple terms, BIC is the bank’s “address,” used to identify a specific bank; IBAN is the “house number” of a bank account, used to identify a specific account.

You can think of it like sending an international package. The BIC code ensures the package reaches the correct city and street (bank), while the IBAN ensures the courier can find the specific recipient and house number (account).

In global international transfers exceeding $270.96 billion annually, correctly using these two codes is the first step to ensuring your funds arrive quickly and accurately.

Key Points

• BIC is the global address of a bank, and IBAN is the international number of a bank account.
• Providing both BIC and IBAN during international wire transfers ensures funds reach their destination accurately.
• Transfers to Europe typically require an IBAN, while transfers to countries like China require a BIC and local account number.
• Before transferring, always verify all information with the recipient to avoid errors and losses.
• Incorrect codes may lead to transfer failures or funds being deposited into the wrong account.

Difference and Role of BIC and IBAN

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To help you better understand the difference and role of BIC and IBAN, we will dive into the structure and function of these two codes separately.

BIC (SWIFT Code): The Global Identifier of a Bank

BIC, or Business Identifier Code, is more commonly known as the SWIFT Code. You can think of it as the bank’s “ID number” or unique “address” in the global financial network.

According to the official definition by the International Organization for Standardization (ISO), BIC is governed by the ISO 9362 standard. The Society for Worldwide Interbank Financial Telecommunication (SWIFT) is designated as the registration authority for this standard, responsible for assigning and managing these codes. Currently, over 11,000 financial institutions worldwide are connected through the SWIFT network, using BIC for communication and fund transfers.

A BIC consists of 8 or 11 alphanumeric characters, with each part having a specific meaning:

• First 4 letters: Bank code (e.g., BKCH for Bank of China)
• Next 2 letters: Country code (e.g., HK for Hong Kong)
• Next 2 characters: Location code (e.g., HH for headquarters location)
• Last 3 characters (optional): Branch code (e.g., XXX for the head office)

For example: Suppose you see a BIC code BKCHHKHHXXX. It means the funds will be sent to the head office (XXX) of Bank of China (BKCH) located in Hong Kong (HK). If it’s an 8-digit code, like BKCHHKHH, it defaults to the bank’s head office.

This code ensures your transfer instructions reach the target bank accurately, without being sent to any other financial institution.

IBAN: The International Standard Account Number

IBAN, or International Bank Account Number, is created based on the ISO 13616 international standard. Its primary role is to identify a specific account within a banking system. Currently, over 70 countries and regions worldwide use IBAN, especially in Europe and the Middle East, where it has become mandatory.

Unlike your local bank account number, IBAN’s structure is designed to be more rigorous, significantly reducing the likelihood of errors. An IBAN typically includes the following components:

1. Country code: 2 letters indicating the country where the account is located.
2. Check digits: 2 digits, automatically verifying the entire account number’s accuracy through a specific algorithm (MOD-97).
3. Basic Bank Account Number (BBAN): Includes the bank code and your personal account number.

This built-in check digit is a major advantage of IBAN. When you input an IBAN, the banking system can immediately perform a preliminary validation. If there’s an error, the system will prompt you to check, preventing potential mistakes before the transfer is sent.

Let’s look at an example of a German bank account’s IBAN structure:

Core Differences Summary: Bank Address vs. Account Doorplate

Now, you should have a clearer understanding of the difference and role of BIC and IBAN. In simple terms, they play complementary roles in an international wire transfer.

• BIC tells the intermediary and receiving banks: “Which bank should this money go to?”
• IBAN tells the receiving bank: “Which specific account should the money be deposited into after arrival?”

The following table can help you quickly review the core differences:

Mastering the correct use of these two codes is the first step to ensuring the safety and accuracy of international wire transfers.

International Wire Transfer Practical Guide

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Having understood the difference and role of BIC and IBAN, you now need to master how to use them correctly in practice. This guide will walk you through the specific requirements in different scenarios, helping you complete every international wire transfer with ease.

When to Provide Both BIC and IBAN

In most international wire transfer scenarios, especially when transferring to specific regions, providing both BIC and IBAN is the standard practice to ensure funds arrive smoothly.

• Transfers to Europe and the Middle East: Since 2007, for transfers to the EU/EEA and other countries adopting the IBAN standard (e.g., UAE, Saudi Arabia, Turkey), you must provide both the recipient’s IBAN and the bank’s BIC (SWIFT Code).
• Reducing Additional Fees and Refund Risks: Including both codes in the transfer instructions can significantly reduce your transfer costs. Some receiving banks may charge additional processing fees (e.g., $15 - $30 USD) for incomplete information or even return the funds.

How Banks Operate in the Background? In the SWIFT messaging system (e.g., MT103 message), BIC and IBAN information are filled into specific fields to guide the flow of funds.

Field Name	Purpose	Example
:57A: Beneficiary Bank	Contains the receiving bank’s BIC code	OCBCSGSG
:59: Beneficiary Customer	Contains the recipient’s IBAN	/DE89370400440532013000

Correctly filling in these two pieces of information is like providing precise GPS navigation for the funds, ensuring they reach their destination directly.

When Only IBAN or BIC Is Needed

While providing both is the safest approach, in certain scenarios, you may only need one of the codes.

Scenario 1: Usually Only IBAN Is Needed

If you’re making a euro transfer within the Single Euro Payments Area (SEPA), the process becomes very straightforward. SEPA covers EU countries as well as the UK, Switzerland, Norway, and others.

• SEPA Transfer Rules: For SEPA euro transfers, you typically only need to provide the recipient’s IBAN. The system automatically identifies the corresponding bank, no longer requiring you to manually input the BIC. This makes euro payments within the region as convenient as local transfers.

Scenario 2: Only BIC and Local Account Number Needed

Many countries have not adopted the IBAN system. When transferring to these countries, providing the BIC and local bank account number is sufficient.

• Main Countries: The US, Canada, Australia, New Zealand, and mainland China do not use IBAN.
• Required Information:
  • For transfers to the US: You need the receiving bank’s SWIFT/BIC code and ABA Routing Number.
  • For transfers to Australia: You need the SWIFT/BIC code and BSB Code (Bank-State-Branch Code).
  • For transfers to Canada: You need the SWIFT/BIC code, Bank Code, and Transit Number.

Therefore, before initiating a transfer, always confirm the specific requirements of the recipient’s country/region.

How to Obtain and Verify Codes

Obtaining and verifying the correct codes is the most critical step in the entire transfer process. Incorrect information is the most common reason for transfer failures.

Before sending, use BiyaPay’s IBAN guide and SWIFT overview to cross-check fields and reduce input errors.

If conversion is needed, estimate total cost and net proceeds first with the Rate Converter to choose a safer route.BiyaPay is a multi-asset wallet supporting fiat and digital asset conversions with live, transparent rates and fees as low as 0.5%.

Where banks/beneficiaries require legacy rails, select the destination path in Remittance and keep the instruction receipt for reconciliation.

BiyaPay operates with US MSB and NZ FSP registrations, which helps during compliance reviews.

Step 1: Request Directly from the Recipient

This is the most reliable and recommended method. Ask the recipient to provide a complete set of bank details, including:

1. Recipient’s Full Name (must match the bank account name exactly)
2. Recipient’s Address
3. Bank’s Full Name
4. IBAN (if applicable)
5. BIC/SWIFT Code
6. Local Account Number and Routing Codes (e.g., ABA, BSB, if applicable)

Verification Checklist Before initiating the transfer, confirm with the recipient again. Carefully check every letter and number, especially easily confused characters like 0 and O, or 1 and I. A single mistake could lead to a failed transfer.

Step 2: Check Through Official Channels

If you need to find your own account’s IBAN or your bank’s BIC, you can use the following official methods:

• Online Banking or Bank App: After logging in, you can usually find this information in the “Account Details” or “International Transfers” section. For example, some licensed banks in Hong Kong display IBAN and SWIFT codes directly on the account information page in their apps.
• Bank Statements: Monthly paper or electronic statements often include this information.
• Contact the Bank Directly: Call your bank’s customer service or visit a branch to inquire.

Step 3: Use Online Tools for Additional Verification

After obtaining the codes, you can use free online tools to verify them for added assurance.

• IBAN Verification: Websites like Wise and IBAN.com offer free IBAN validation tools. They can check the IBAN’s format, length, and check digits, and tell you which country and bank it belongs to.
• BIC Verification: You can visit SWIFT’s official lookup tool (SWIFTRef), enter the bank name and country, and retrieve the corresponding BIC code.

Keep in mind that online tools are only for supplementary verification and cannot replace official information obtained from the recipient or their bank.

The Cost of Incorrect Codes

If you accidentally enter the wrong code, you may face several consequences, wasting both time and money.

1. Transfer Automatically Returned: If the provided IBAN or account number is invalid (e.g., incorrect check digits or a closed account), the banking system will automatically reject the transaction. Funds are typically returned to your account within a few business days, but you may lose the transfer fees already paid.
2. Funds Deposited into the Wrong Account: This is the worst-case scenario. If the provided account number happens to belong to another valid, existing account, the funds will be deposited into a stranger’s account.
3. Initiating a Recall Process: If you discover an error, you need to contact your transferring bank immediately to initiate a “Recall Request”.
   • The bank will contact the receiving bank to request the recipient’s consent for a refund.
   • This process may take weeks, and the bank may charge a recall processing fee (e.g., $25 - $60 USD).
   • If the recipient refuses to return the funds, the situation can become very complicated, and you may need to pursue legal action to recover the money.

In short, taking a minute to carefully verify all information before clicking “Confirm Transfer” is the most important thing you can do to ensure the safety of your funds.

Before making an international wire transfer, your top priority is to confirm the required codes (BIC, IBAN, or both) with the recipient. This is more critical than simply understanding the difference and role of BIC and IBAN.

Data entry errors are a common reason for transfer rejections. Spending a minute to carefully verify before clicking “Confirm” is the most important thing you can do for the safety of your funds.

Developing a habit of double-checking all information ensures your funds reach their destination safely and efficiently in the increasingly complex global payment network.

FAQ

Do I Need an IBAN to Transfer to a Bank Account in Mainland China?

No. Mainland China does not use the IBAN system. You need to obtain the following information from the recipient:

1. The bank’s SWIFT/BIC code
2. The recipient’s 19-digit UnionPay card number or current account number
3. The recipient’s name and address

Can I Provide Only the IBAN Without the BIC?

In specific regions, yes. For example, in the Single Euro Payments Area (SEPA) for euro transfers, you typically only need to provide the IBAN. However, in most international transfer scenarios, providing both IBAN and BIC is the safest approach to avoid delays.

Will Transfer Fees Be Refunded If the Transfer Fails?

Usually not. Banks incur service costs for processing transfer requests. Therefore, even if a transfer is returned due to incorrect information, the transfer fees you paid (e.g., $15 - $30 USD) are unlikely to be refunded.

Are Online IBAN Validation Tools 100% Accurate?

Not entirely. Online tools can verify the format, length, and check digits of an IBAN but cannot confirm whether the account actually exists or is still in use.

They are only a supplementary verification method. The most reliable source of information is always the recipient or their bank.