Korea Foreign Currency Account: What Foreigners Need…

Your paycheck lands in won. Your bills don’t.

Maybe you send money to parents in Hanoi every month. Maybe a credit card back home still bills you in dollars. You opened a regular Korean bank account, then hit a wall the first time you tried to hold dollars or wire money out. The teller asked for papers you didn’t bring. The app’s rate looked nothing like the one you saw on Google.

A foreign currency account, or oehwa yegeum (외화예금), solves part of that. Not all of it. Below you’ll find how the account works, which documents banks actually check, where the fees hide, and which reports run quietly in the background. No won account yet? Sort that out first, because most banks want one on file. Korea bank account for foreigners

Why isn’t a regular won account enough?

A standard Korean account holds only won. A foreign currency account lets you keep US dollars, euros, yen, or other currencies without converting every time money moves. That matters if you earn, save, or send money in another currency. It also lets you choose when to convert, instead of accepting whatever rate applies on the day a transfer lands.

Three account types you’ll see at the counter

• Ordinary foreign currency deposit. Money goes in and out anytime. Interest is close to zero. Most readers need only this one.
• Foreign currency time deposit. You lock funds for a fixed term, commonly 1 to 12 months, for a higher rate.
• Foreign currency installment savings. Small regular deposits. Useful if you’re saving for tuition abroad or a future move.

US dollars, euros, Japanese yen, and Chinese yuan are standard at every major bank. Smaller currencies vary by bank and branch.

Resident or non-resident? This label sets your rules

Korean foreign exchange law sorts people into residents and non-residents. Your visa type doesn’t decide it directly. Under the Enforcement Decree of the Foreign Exchange Transactions Act, a foreigner who works at a business in Korea, or who has stayed in Korea for six months or more, is generally treated as a resident. A tourist or a newcomer is usually a non-resident.

Why should you care? Residents get the larger remittance allowance explained below. Non-residents can still open a non-resident foreign currency account, often with only a passport. But their outgoing transfers are tied more tightly to money they originally brought into Korea.

Is the money protected?

Yes, up to a limit. The Korea Deposit Insurance Corporation (KDIC) covers foreign currency deposits at member banks, valued in won. Since September 1, 2025, coverage is KRW 100 million per person, per bank, principal and interest combined.

Two tax points. Interest is taxed at 15.4% (14% national tax plus 1.4% local tax), withheld by the bank, according to the National Tax Service. Gains from exchange rate movement on an ordinary deposit are not taxed for individuals.

So the account itself is simple. Opening one is where people stall.

Which required documents get a foreigner USD account opened on the first visit?

Bring your passport, your ARC, a Korean phone number in your own name, and one document proving why you need the account. Workers usually bring an employment certificate. Students bring an enrollment certificate. Missing that purpose document is the most common reason a branch sends you home, or opens a restricted account instead of the one you asked for.

The core checklist

1. Passport. The original, not a photocopy.
2. ARC (Alien Registration Card, 외국인등록증). Some branches open foreign currency accounts before your card arrives. Many won’t.
3. Korean mobile number in your name. The banking app sends verification codes to it.
4. Proof of purpose. Banks use a financial transaction purpose form (geumyung georae mokjeok hwaginseo, 금융거래목적확인서). It’s an anti-fraud measure supervised by the Financial Supervisory Service.
5. Tax residency self-certification. Korea shares account data with other countries under the OECD Common Reporting Standard (CRS). You’ll sign a form naming your tax residence. US citizens and green card holders also complete an IRS Form W-9 under FATCA.

Book your ARC appointment through HiKorea early. The card can take several weeks to arrive, and many banks won’t move past step 2 without it.

What counts as proof of purpose, by visa

The limited account trap

Can’t prove a purpose? Many banks still open a won account as a limited-transaction account (hando jehan gyejwa, 한도제한계좌). Daily transfer caps on these are low. You can lift them later by bringing the missing documents. For foreign currency accounts, branch policy varies more. Some won’t open one at all without proof.

Large lenders such as Hana Bank, Shinhan Bank, Woori Bank, and KB Kookmin Bank run foreigner service desks at selected branches. Call ahead and ask which documents that branch accepts. It saves a second trip.

Here’s the part nobody explains at the counter. The account is free. Moving money through it isn’t.

What do fees and exchange rate spread really cost you?

Every Korean bank posts a base rate (maemae gijunyul, 매매기준율), then adds a margin when you buy or sell currency. That margin is the spread. Cash conversions cost the most. Wire conversions cost less. Add sending fees, cable charges, and intermediary bank deductions, and one transfer can cost far more than the fee shown in your app.

How to read the rate board

Banks show five numbers for each currency: the base rate, cash buying, cash selling, wire sending, and wire receiving. At major banks, the cash spread on US dollars typically sits about 1.75% from the base rate. The wire spread is about 1%.

Here’s a worked example with an illustrative base rate of 1,400 won per dollar:

Check today’s rates on each bank’s board, not this table. The structure stays the same.

Preferential rates shrink the spread

Banks discount the spread through apps, payroll accounts, and promotions. This is called hwanyul udae (환율우대). A 90% preferential rate means you pay only 10% of the spread. In the wire example, your cost drops from 70,000 won to 7,000 won. Always check whether the discount covers cash, wires, or both.

The fees stacked on top

• Sending fee. The bank’s own charge, usually tiered by amount.
• Cable charge (jeonsinryo, 전신료). Covers the SWIFT message.
• Intermediary bank deduction. Taken out in transit, so less arrives than you sent.
• Receiving bank fee. Charged by the bank abroad.
• Cash handling fee (hyeonchal susuryo, 현찰수수료). Often applies when you deposit foreign banknotes and later withdraw them as cash.

Watch the charge option on the transfer form. OUR means you pay every fee, so the full amount arrives. SHA splits fees, and the recipient sees deductions. Pick OUR for tuition or rent, where a short payment causes problems.

But fees aren’t the only ceiling. The bigger question is how much you can send at all.

How large is the overseas remittance limit before the bank asks why?

Residents can send up to USD 100,000 per year abroad without showing proof of purpose, as long as it goes through one designated bank. The Ministry of Economy and Finance raised that cap from USD 50,000 in July 2023. Above it, you need documents. Foreign workers can send more by proving the money is income earned in Korea.

Step 1: Designate your bank

Undocumented transfers must run through a designated foreign exchange bank (georae oegukhwan eunhaeng, 거래외국환은행). You register this at the branch or in the app. Your yearly total is tracked under that designation, so you can’t reset the count by spreading transfers across banks. The rules come from the Ministry of Economy and Finance, which oversees the Foreign Exchange Transaction Regulations.

The annual cap is USD 100,000. Plan big payments, like a deposit on a home abroad, around it.

Step 2: Match the documents to your situation

• Workers on E-7, E-9, H-2, or F-2. Bring an employment certificate, recent pay slips, and your earned income withholding receipt (geunro sodeuk wancheon jingsu yeongsujeung, 근로소득원천징수영수증). These show the money came from Korean wages.
• Students on D-2. Money usually flows in for tuition and living costs. Incoming wires trigger a purpose question, so tell the bank it’s tuition or family support.
• Marriage migrants on F-6 or F-5. Family support transfers fit within the annual cap. Larger amounts need documents showing the source.
• Non-residents. You can convert won back to foreign currency up to the amount you originally exchanged, shown by your exchange receipt. Without receipts, the cap is USD 10,000. Keep every receipt.

What about remittance apps?

Licensed small-amount remittance operators work under the Foreign Exchange Transactions Act. They often charge less than banks. They also set their own per-transfer and annual limits, separate from bank designation rules, and show them before you send. Check an operator’s registration on the FSS site before handing over money.

send money home from Korea foreign worker

Here’s what actually happens next. Even an allowed transfer can create a record you never see.

When does a foreign exchange transaction report happen, and do you file it?

Most reports are filed by your bank automatically, not by you. Banks notify the National Tax Service when your overseas transfers exceed USD 10,000 in a year, and report cash transactions of KRW 10 million or more per day to KoFIU. You file reports yourself mainly for capital transactions, like buying property abroad, or when carrying over USD 10,000 across the border.

The law behind all of this states its purpose plainly:

“The purpose of this Act is to contribute to the sound development of the national economy by ensuring freedom of foreign exchange transactions and other external transactions, balancing international payments, stabilizing currency values, and ensuring efficient management of foreign exchange.”

Foreign Exchange Transactions Act, Article 1, English translation published by MOLEG.

Reports your bank files for you

• National Tax Service notice. Triggered when an individual’s yearly overseas transfers pass USD 10,000. It isn’t a penalty. It lets NTS check income sources.
• Currency Transaction Report (CTR). Cash deposits or withdrawals of KRW 10 million or more at one bank in one day go to the Korea Financial Intelligence Unit.
• Suspicious Transaction Report (STR). Filed when activity looks unusual. Splitting a large amount into smaller chunks to dodge thresholds is a classic trigger. Don’t do it.

Reports you file yourself

• Cash at the border. Travelers carrying more than USD 10,000 in total cash and payment instruments must declare it to the Korea Customs Service on entry or exit. Undeclared cash can be fined or seized.
• Capital transactions. Buying real estate abroad, lending to a non-resident, or making an overseas direct investment needs a report before the deal. You file with your designated bank, or with the Bank of Korea for some categories.
• Overseas financial account report. Residents whose foreign accounts total more than KRW 500 million on any month-end must report to NTS each June. Foreign residents who lived in Korea for five years or less in total during the previous 10 years are exempt. Long-term F-5 holders, take note.

That covers life while you’re here. The last trap shows up when you leave.

What should you do with the account before you leave Korea?

Move or convert your balance, collect final pay and severance, and decide whether to close the account. Many banks restrict accounts once your stay period expires, and fixing that from abroad is painful. Plan your last transfer while you still have a valid ARC, a working Korean phone number, and enough time to sort out missing documents.

A departure checklist

1. Collect severance. If you worked one year or more, the Employee Retirement Benefit Security Act requires your employer to pay severance within 14 days of leaving. E-9 workers also claim departure guarantee insurance.
2. Claim your pension refund. Depending on your nationality, you may get a National Pension lump-sum refund (banhwan ilsigeum, 반환일시금) from the National Pension Service. It can be paid to an overseas account. national pension lump-sum refund foreigners
3. Send the final balance. Stay under the USD 100,000 undocumented cap, or bring your withholding receipt and pay slips to send more.
4. Close or convert. Ask whether your bank lets you keep the account as a non-resident. If not, close it in person.
5. Update your address. Give the bank your new overseas address for CRS tax reporting.
6. Return your ARC. If you’re leaving for good, you hand it in at departure immigration, per the Korea Immigration Service.

Your three moves this week

Call one branch and confirm which purpose documents it accepts for your visa. Designate a foreign exchange bank before your first large transfer. Then compare that bank’s wire spread and preferential rate against a licensed remittance app. Those three calls decide most of what a foreign currency account will cost you in Korea.