[EN] Sending a Large Amount of Money to Korea: What Should You Do If Your Bank Asks for Proof of Funds?

Person reviewing bank statements and financial documents before making a large international wire transfer to Korea
Preparing source-of-funds documents before sending a large international wire transfer to South Korea

You have saved money overseas for years.

Now you are ready to send it to Korea to buy a home, invest in a business, or support your family.

You log into online banking, enter the recipient’s details, approve the international wire transfer—and then nothing happens.

A day later, your bank contacts you.

“Please provide documents showing the source of your funds.”

Many people immediately assume that the problem is on the Korean side.

In reality, the review may begin before the money leaves the sender’s country.

Understanding why the bank is asking these questions can help you prepare the right documents and reduce unnecessary delays.

A Large Transfer Is Placed Under Review

Imagine a business owner living in California.

Over several years, the owner accumulated money through salary, investment income, and the sale of shares. The funds were held across several savings, brokerage, and checking accounts.

Shortly before a Korean property payment was due, the owner moved all the funds into one primary account and submitted a single large wire transfer to Korea.

The next day, the bank said the transfer was under review.

The customer replied:

“Those are all my own accounts. You can see every transfer.”

The bank was not necessarily accusing the customer of wrongdoing. It simply needed enough information to complete its compliance review.

Transfers between personal accounts may show where the money was yesterday. They do not always explain how it was originally earned, invested, inherited, or received.

Official Guidance

Under the recommendations issued by the FATF (Financial Action Task Force), the international body that develops anti-money laundering standards, financial institutions are expected to apply CDD (Customer Due Diligence) and a Risk-Based Approach (RBA) when reviewing customers and transactions.

Customer Due Diligence means that a bank checks the identity of the customer, the purpose of the relationship, and whether transactions are consistent with what it knows about the customer.

A Risk-Based Approach means that the level of review depends on the circumstances. Banks do not apply one identical document list or monetary threshold to every customer.

Individual banks implement these international standards through their own internal procedures and the laws of the countries where they operate.

Depending on the customer’s transaction history and the perceived risk, a bank may request information about the source of the money, the customer’s broader wealth, the recipient, or the purpose of the transfer.

Why Does the Bank Care When the Money Is Already in Your Account?

A common reaction is:

“It is my money. Why should I prove anything?”

From the bank’s perspective, account ownership and the origin of the money are separate questions.

A large account balance confirms that money is held in the account. It does not necessarily explain how the money was generated.

A transfer may receive additional review when it is unusual compared with the customer’s normal activity, involves recently consolidated funds, lacks a clear purpose, or contains incomplete sender or recipient information.

A request for documents does not automatically mean that the transaction is illegal. It means the bank needs enough information to decide whether the transaction is consistent with its compliance obligations.

Source of Funds and Source of Wealth Are Different

Banks may ask about two related but different concepts.

Source of Funds

SOF (Source of Funds) means the immediate origin of the money involved in the current transaction.

Examples include:

  • salary or business income;
  • proceeds from selling real estate;
  • proceeds from selling shares or other investments;
  • inheritance;
  • a family gift;
  • or funds withdrawn from a particular investment account.

Source of Wealth

SOW (Source of Wealth) means how the customer’s overall wealth was accumulated over time.

Examples include:

  • long-term employment income;
  • business ownership;
  • investment growth;
  • inherited assets;
  • or the sale of a company.

Suppose you sell an apartment and send the proceeds to Korea.

The sale agreement and settlement statement may explain the Source of Funds for the transfer.

The bank may still ask how you originally acquired the apartment. That broader history relates to the Source of Wealth.

Knowing which question the bank is asking helps you submit relevant documents rather than sending a large, unorganized file.

What Documents May the Bank Request?

Requirements differ by country, bank, customer, and transaction.

Documents commonly requested may include:

  • personal or business tax returns;
  • salary statements;
  • company financial statements;
  • property sale contracts;
  • settlement or escrow statements;
  • brokerage statements;
  • investment sale confirmations;
  • inheritance or probate records;
  • gift agreements or tax filings;
  • bank statements showing the movement of funds;
  • and documents explaining the purpose of the payment in Korea.

The bank may also ask about the recipient and the relationship between the sender and recipient.

For example, a customer sending money to a personal Korean account may need different supporting documents from someone sending investment capital to a Korean company.

Build a Clear Paper Trail

A useful document file should connect three parts of the transaction.

1. How the Money Was Created

Prepare evidence showing the original source of the money.

This might be employment records, business income, tax returns, an asset sale, brokerage records, inheritance documents, or a formal gift record.

2. How the Money Reached the Sending Account

Prepare bank or brokerage statements showing how the funds moved into the final account used for the wire.

Names, dates, and amounts should be consistent.

If the funds passed through several personal accounts, show the chain clearly rather than submitting only the final account statement.

3. Why the Money Is Going to Korea

Prepare documents explaining the transaction’s purpose.

Depending on the case, this may include:

  • a Korean property contract;
  • a corporate investment agreement;
  • business incorporation documents;
  • Korean bank account information;
  • or a written explanation of family support.

Not every bank will request all three categories. Preparing them in advance makes it easier to respond quickly if the bank asks.

Why Last-Minute Consolidation Can Cause Delays

Moving money between your own accounts is not automatically a problem.

However, transferring funds from several accounts into one account and immediately sending a large amount overseas can create a longer documentary trail.

The bank may need to determine:

  • where each incoming amount came from;
  • whether the account holder is the same person;
  • whether any funds came from third parties;
  • and whether the transfer purpose matches the supporting records.

The practical risk is delay.

Do not wait until the final day of a Korean property payment or investment deadline to consolidate funds and initiate the wire.

There is no universal review period. A bank may complete the review quickly, request more documents, reject the transfer, or return it if the information is insufficient.

What Is SWIFT?

SWIFT (Society for Worldwide Interbank Financial Telecommunication) is a secure messaging network banks use to exchange international payment instructions.

An international transfer may involve the sending bank, one or more correspondent banks, and the receiving bank in Korea.

A correspondent bank is an intermediary institution that helps process the payment when the sending and receiving banks do not transfer funds directly.

Because several financial institutions may review the payment information, the sender’s name, address, recipient information, account details, and stated payment purpose should be complete and consistent.

Accurate information cannot guarantee that no review will occur, but incomplete or conflicting information may cause questions or delays.

Should You Contact the Bank Before Sending?

For an unusually large or time-sensitive transfer, contact the bank before initiating the wire.

Ask the international wire or compliance team:

  • whether the transaction can be completed online;
  • whether an in-person request is required;
  • which Source of Funds documents may be requested;
  • whether Source of Wealth information may also be needed;
  • how supporting documents should be submitted;
  • whether daily or transaction limits apply;
  • and whether additional review could affect the timing.

A bank may not offer formal advance approval. However, an early conversation can reveal missing documents before the payment becomes urgent.

Does a Document Request Mean a Suspicious Activity Report Was Filed?

Not necessarily.

Banks may be required under local law to report transactions they consider suspicious.

In the United States, this may involve a SAR (Suspicious Activity Report).

A large international transfer does not automatically result in a report. The decision depends on the bank’s assessment and the applicable law.

Customers should not assume that every request for documents means they are being accused of money laundering.

The correct response is to provide accurate and consistent information. Do not alter, hide, or invent documents.

The Korean Bank May Conduct a Separate Review

Approval by the sending bank does not automatically complete the Korean side.

The receiving bank in Korea may separately ask for:

  • the purpose of the remittance;
  • the relationship between the sender and recipient;
  • property, investment, or business contracts;
  • foreign-exchange reporting documents;
  • or other records required under Korean law and bank procedures.

The originating bank’s AML (Anti-Money Laundering) review and the Korean bank’s foreign-exchange or compliance review are separate processes.

Prepare for both.

Before Sending the Wire

Check the following:

  • Is the sender’s legal name consistent across the passport, bank account, and supporting records?
  • Can you explain the immediate Source of Funds?
  • Can you explain the broader Source of Wealth if asked?
  • Do the statements show a clear trail into the sending account?
  • Is the payment purpose supported by a Korean contract or other document?
  • Are the recipient’s name and bank details correct?
  • Have you checked transfer limits and submission procedures with the sending bank?
  • Have you allowed enough time for additional review?
  • Have you confirmed what the Korean bank may require?

Questions to Ask Your Bank

A direct question is more useful than simply asking whether the transfer will be blocked.

Ask:

“We are preparing a large international wire transfer to South Korea. Which Source of Funds and Source of Wealth documents may your compliance team require, and how should we submit them before initiating the payment?”

Also ask whether the bank needs proof of the transfer purpose, recipient information, tax records, asset-sale documents, or a complete account trail.

Final Takeaway

A large international wire transfer to Korea may be reviewed before the money leaves the sender’s country.

The bank may ask about the Source of Funds, the Source of Wealth, the purpose of the transaction, or the recipient.

There is no single amount that triggers the same review at every bank.

The best preparation is not simply telling the bank that the money belongs to you.

It is preparing a clear paper trail showing how the money was created, how it reached the sending account, and why it is being transferred to Korea.

Fact-Check Materials Used

  • FATF Recommendations on Customer Due Diligence and Wire Transfers
  • FATF guidance on the Risk-Based Approach
  • National anti-money laundering rules and bank compliance procedures
  • Official international wire-transfer guidance issued by financial institutions

Official Sources

  • Financial Action Task Force
  • The financial intelligence authority or banking regulator in the sender’s country
  • The originating bank’s official wire-transfer and compliance guidance
  • The receiving Korean bank’s official foreign-exchange guidance

Disclaimer

This article provides general information about overseas bank compliance reviews for large transfers to South Korea. It does not provide legal, banking, tax, or anti-money laundering advice.

Requirements vary by country, bank, customer profile, transaction purpose, payment route, and current law. Confirm the required documents with the originating bank and the receiving Korean bank before initiating a time-sensitive transfer.


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