Unclaimed Money in Korea: 9 Refunds Foreign Residents Often Forget to Claim

Most foreign residents who live in Korea for a year or more have money waiting in at least two or three systems they have never touched. Tax refunds expire after 5 years. Health insurance cap refunds expire after 3. Card points disappear after 5. None of it chases you down.

This guide runs through nine free lookups. The key difference from other refund guides is the access table below: it tells you exactly which portals work with an Alien Registration Card (ARC, 외국인등록번호) and which ones block you online, with the workaround for each.

One shortcut before you start. 정부24's integrated refund lookup (미환급금 통합조회) checks national tax, local tax, NHIS, pension, and telecom refunds in a single screen. Start there if you want a quick sweep before going deeper into each system.

Which portals accept your ARC number

Step 1: National tax refunds (국세 미수령 환급금)

The National Tax Service (국세청, NTS) refunds you when you overpaid tax, but the money sits uncollected if the notice goes to an old address or a closed bank account. Year-end settlement (연말정산) refunds, income tax refunds, and VAT refunds all end up here.

Who qualifies: Any foreign resident who has paid Korean national tax. Visa type and nationality make no difference. The refund right attaches to the taxpayer under National Tax Basic Act (국세기본법) Article 51, with no citizenship or visa condition.

Typical amount: Ranges widely. Freelancers with several years of unclaimed 3.3% withholding refunds can see ₩500,000 or more. Wage employees typically see smaller one-time amounts.

How to check:

1. Log in to Hometax (hometax.go.kr) with your ARC number and a joint certificate or simple authentication (Kakao, PASS, or bank certificate).
2. Go to 국세환급금 미수령 조회 to see any uncollected refunds from the past 5 years.
3. If you have a refund, apply to have it wired to your Korean bank account. Transfer takes within a few business days after approval.

Alternative channels: Call the NTS ARS line at 1544-9944 (Korean), or visit any tax office (세무서) with your ARC.

No-login lookup caution: Hometax has a no-login quick lookup, but the field is labeled 주민등록번호(사업자번호), which is the Korean resident registration number. Use the logged-in path to ensure your ARC number is accepted.

2025 rule change: From January 1, 2025, refunds of ₩200,000 or less left unclaimed for 1 year are automatically offset against any national taxes you owe, rather than staying claimable. The previous threshold was ₩100,000. Small refunds can effectively disappear if you do not act within a year (as of 2025: verify at hometax.go.kr or the nearest tax office).

Expiry: 5 years from the payment demand date (최초 지급요구일) under National Tax Basic Act Article 54. NTS reminder notices do not restart the clock.

Step 2: Local tax refunds (지방세 환급금)

Overpaid or prorated local taxes sit with city and district offices. The most common cases are annual-payment car tax (자동차세 연납) refunds after selling or scrapping a car mid-year, and local income tax (지방소득세) refunds that follow a national tax refund.

Who qualifies: Any foreign resident who has paid Korean local tax. WeTax (위택스, wetax.go.kr) confirms it accepts ARC numbers, with one condition: your name must be entered in all-caps English, exactly as printed on your ARC card. F-4 Korean-heritage diaspora holders of a domestic residence report (국내거소신고증) are also covered.

Foreigners who have not yet received an ARC cannot register on WeTax and must visit their local tax office in person.

Typical amount: The Ministry of the Interior and Safety reported about ₩40.4 billion in unclaimed local taxes across roughly 490,000 cases, about ₩82,000 per case on average. Car tax proration refunds can range from ₩50,000 to ₩300,000 or more depending on engine size and when in the year the car was sold.

How to check:

• Log in to WeTax (wetax.go.kr) and go to 환급금 조회·신청. Enter your bank account details to receive the refund.
• Seoul residents: use ETax (etax.seoul.go.kr) instead of WeTax.
• Or use 정부24's 미환급금 통합조회, which covers local tax alongside other refund types.

Any delinquent local taxes are offset against the refund before you receive the balance.

Expiry: 5 years from when the right arises, under Local Tax Basic Act (지방세기본법) Article 64.

Step 3: NHIS out-of-pocket cap refund (본인부담상한제 초과금)

If your covered hospital bills in a single calendar year exceed your income-based annual cap, the National Health Insurance Service (NHIS, 국민건강보험) refunds everything above that cap.

Who qualifies: Any NHIS employee subscriber (직장가입자) or regional subscriber (지역가입자), and their enrolled dependents (피부양자), with no nationality restriction. Foreign residents who have been in Korea for 6 months or more are mandatorily enrolled and qualify on the same basis as Korean subscribers.

Who does not qualify: people who were not enrolled in NHIS at the time of treatment (including those still in the 6-month waiting period), anyone whose coverage lapsed due to unpaid premiums at the time of the treatment, and Medical Aid (의료급여) recipients, who are in a separate system.

Foreign regional subscriber note: NHIS typically assigns foreign regional subscribers a mid-to-upper income decile regardless of actual income. This means a higher personal cap, and therefore smaller or no refund except after major treatment such as surgery, cancer care, or long hospitalization.

Caps (as of 2026: verify at nhis.or.kr): The 2025 personal caps run from ₩890,000 to ₩8,260,000 across ten income brackets. Non-covered charges (비급여), including elective procedures and dental implants, do not count toward the cap.

Typical amount: For the 2024 treatment year, 2,135,776 NHIS members received an average of about ₩1.31 million, totaling ₩2.792 trillion in refunds, per a Ministry of Health and Welfare (보건복지부) press release.

How to check:

• Log in to nhis.or.kr or the The건강보험 app and search 환급금 조회·신청.
• NHIS mails a Korean-language notice around August of the year after treatment. You do not need to wait for that notice: check and apply at any time.
• Call 1577-1000 for phone assistance.

Timeline: Refunds for the 2024 treatment year were announced in August 2025. Refunds for the 2025 treatment year will follow around August to September 2026.

Expiry: 3 years from the mailed notice date, under National Health Insurance Act Article 91.

Payment: NHIS transfers only to a Korean bank account in your own name. Former residents who have left Korea but still have a Korean account can apply from abroad.

Step 4: HIRA medical bill review (진료비 확인 서비스)

This is a separate route through the Health Insurance Review and Assessment Service (HIRA, 건강보험심사평가원). If a hospital charged you as a non-covered expense (비급여) for something that should have been billed to your insurance, HIRA audits the bill and orders the hospital to refund the overcharge.

Who qualifies: Any NHIS member or enrolled dependent at the time of treatment. The right comes from National Health Insurance Act Article 48, with no nationality screening. Foreign residents on all visa types who were enrolled in NHIS when treated qualify. If you were not enrolled in NHIS at the time of treatment, this route does not apply.

Typical amount: Individual refunds range from tens of thousands of won for routine overcharges to several million won for surgery or complex treatment. Some requests result in zero refund when the non-covered billing was legitimate.

How to file:

1. Get the itemized receipt (진료비 세부내역서) from the hospital. A basic summary receipt may not be sufficient for a complex review.
2. File online at hira.or.kr (requires identity verification with ARC and a Korean phone number), or submit by post, fax, or phone at 1644-2000. The phone and postal channels do not require digital authentication, which makes them the practical fallback for foreign residents who cannot complete online verification.
3. HIRA must respond within 15 days. If the charge was improper, the hospital must refund you promptly.

Practical warning: Hospitals sometimes contact patients and offer a partial direct refund in exchange for withdrawing the HIRA request. You can decline and let HIRA complete its review.

Time limit: HIRA cannot review bills from hospitals where records are older than 5 years (the statutory document retention period). File promptly after a large or unexpected bill.

Step 5: Card points (카드포인트 통합조회·계좌입금)

All your Korean credit and debit card points, worth ₩1 each, accumulate silently across multiple issuers and expire after 5 years. The Credit Finance Association (여신금융협회) runs a free portal to sweep all issuers at once and transfer the total to your bank account.

Who qualifies: Any Korean credit or debit cardholder, regardless of visa type. The official FAQ of cardpoint.or.kr states the service is available to "individual members including foreigners" (외국인을 포함한 신용카드사 등의 개인회원). Only corporate card members are excluded.

Typical amount: Card points expire on a rolling basis, usually 5 years after they were earned, and large amounts lapse unused across all cardholders every year. Per person, the amount depends on how heavily you use cards. Light card users may find ₩10,000 to ₩30,000; frequent card users can accumulate significantly more.

How to claim:

1. Go to cardpoint.or.kr and complete identity verification. The portal offers mobile phone, card number, or i-PIN verification. You need a Korean phone number registered under your ARC name for the phone-based option.
2. Select all card issuers, enter your bank account number, and transfer. The money lands in your account within a few business days.
3. If the portal's verification step fails: open each card issuer's own app, go to the points menu, and select 계좌입금 (transfer to account) or 현금전환 (convert to cash). Under a 2018 regulatory requirement, all issuers must offer cash conversion to individual cardholders, including foreign residents.

Points expire: 5 years after accrual. Points from early in your time in Korea may be close to expiry.

Step 6: Dormant deposits and unclaimed insurance (휴면예금·숨은보험금)

Korean bank accounts that go inactive for a defined period transfer to a dormant-fund institution. Unclaimed insurance payouts, such as matured savings products or death benefits, sit separately with insurers.

Dormant deposit lookup: Use sleepmoney.kinfa.or.kr (서민금융진흥원 휴면예금 찾아줌) or sleepmoney.or.kr (은행연합회). By statute, dormant deposit records are keyed to either a Korean resident registration number or a foreign registration number (외국인등록번호), so foreign residents are covered. You can also call the community finance center (서민금융통합지원센터) at 1397 or visit in person with your ARC and passport.

Do not use 어카운트인포: The flagship integrated account tool (계좌정보통합관리서비스, payinfo.or.kr) explicitly states foreigners, overseas residents, corporations, and minors cannot use the service. Do not attempt to register there.

Unclaimed insurance (online path uncertain): The online insurance lookup at cont.insure.or.kr has not confirmed ARC number support in publicly available documentation. Contact each insurer directly with your ARC and any policy numbers you have, or visit a branch. Confirm with the insurer before assuming the online flow will work for you.

Typical amounts: Individual amounts vary from a few thousand won to several million. The combined pool of dormant financial assets across all types was reported at about ₩18.4 trillion as of mid-2025.

Step 7: Telecom refunds (통신 미환급액)

When you cancel a mobile line, internet subscription, or switch carrier, overpaid fees, deposits, and prorated balances often stay with the carrier. They earn no interest and will sit there until you claim them.

Who qualifies for the money: Any subscriber who cancelled or ported a line from KT, SKT, LG U+, SK Broadband, or an MVNO on those networks, on any visa type or nationality.

Why the portal is blocked for foreign residents: Smart Choice (스마트초이스, smartchoice.or.kr), the official refund lookup run by the Korea Telecom Operators Association, explicitly lists foreign subscribers (외국인 가입자) alongside corporate and pseudonym subscribers as unable to use the online lookup. The form requires a Korean resident registration number. You must go directly to the carrier.

How to claim:

1. Call your carrier: KT at 100, SKT at 114, LG U+ at 101. Say "미환급금 조회 및 환급 신청" and provide your ARC number.
2. The carrier deposits the refund into a Korean bank account in your name. Claim before closing your Korean bank account or leaving Korea.
3. If you have already left Korea: call from abroad and ask whether the carrier can process a refund without a Korean account. Carriers handle this case by case; there is no guaranteed path.

MVNO note: Smart Choice covers SKT, KT, LGU+, and SK Broadband. MVNOs on those networks are generally included when you select the parent carrier. Pay-TV and cable unrefunded amounts use a separate portal (kait-tvrefund.kr), which likely has the same resident-registration-number restriction.

Typical amount: Usually small: often ₩5,000 to ₩50,000 per cancelled line. Worth a 5-minute call if you switched carriers multiple times during your time in Korea.

Step 8: Car registration bond refunds (지역개발채권·도시철도채권 미환급금)

When you register a car in Korea, you must purchase regional development bonds (지역개발채권) or urban railway bonds (도시철도채권), depending on the region. After a maturity period, the principal plus interest is yours to reclaim. A significant amount sits unclaimed.

Who holds these bonds: Only people who registered a car in Korea and did not sell the bond immediately on registration day. Most buyers sell the bond at a small discount through the dealer at registration (공채할인), which is the majority. If you took that discount, you have no bond and nothing to claim. The unclaimed pool belongs to those who held the bond.

The government's legal-information site confirms bond purchase is mandatory for foreign residents who register a car. The refund right has no nationality or visa condition: it belongs to whoever holds the bond at maturity.

Maturity and expiry:

• Regional development bonds: 5-year maturity. Principal claimable for 10 years after maturity; interest for 5 years.
• Urban railway bonds (Seoul, Busan, Daegu): 7-year maturity. Both principal and interest claimable for 5 years after maturity, so the window closes sooner.

2023 exemption: Since March 2023, non-commercial passenger cars under 1,600cc are exempt from mandatory bond purchase. Hybrid, EV, and hydrogen vehicles are also exempt for a temporary period (as of 2026: verify with your local vehicle registration office). This exemption does not affect bonds bought before that date.

How to claim:

1. Check online via the designated provincial bank's website or app. Shinhan Bank covers Seoul; NH Bank covers most provinces; regional banks cover other areas.
2. You can also look up bonds via WeTax (wetax.go.kr) or ETax (etax.seoul.go.kr).
3. If you cannot complete online verification: visit a branch of the designated provincial bank with your ARC, passport, and vehicle registration documents.

Since March 2022: Bonds bought after this date automatically deposit principal and interest to a registered account at maturity. Bonds bought before March 2022 require an active lookup and claim from you.

Step 9: Unclaimed retirement pension from a closed employer (미청구 퇴직연금)

If a former employer enrolled you in a defined-benefit (DB) or defined-contribution (DC) retirement pension plan and then closed down, your pension money sits with the pension provider (a bank, insurer, or securities firm). A joint government platform launched in May 2024 makes it searchable.

Who is most likely affected: E-7, E-2, D-10, F-2, F-4, F-5, and F-6 holders who worked for a company that enrolled them in a DB or DC plan. Per the Financial Supervisory Service (금융감독원), as of September 2025 about ₩130.9 billion sat unclaimed across roughly 75,000 workers, an average of about ₩1.74 million per person.

E-9 and H-2 workers: Most employers of E-9 and H-2 workers use the Departure Guarantee Insurance (출국만기보험) system, not DB or DC plans. If this applies to you, contact Samsung Fire (02-2261-8400) or HRD Korea to check your Departure Guarantee Insurance balance.

How to check:

1. Go to the FSS integrated pension portal at 100lifeplan.fss.or.kr. This portal accepts ARC numbers and requires a Korean phone number registered in your name. The first lookup takes about 3 business days to activate.
2. Do not sign up at 어카운트인포 (payinfo.or.kr): that platform explicitly excludes foreign residents.
3. Alternatively, call the Ministry of Employment and Labor (고용노동부) helpline at 1350, or contact the pension provider directly with your employment records and ARC.

Expiry: There is no statutory expiry on the pension principal itself. Access becomes harder over time as companies dissolve and records become scattered. Claim while your employment documentation is still available.

Not just uncollected refunds: the amended return (경정청구)

The nine lookups above find money that was decided and never collected. This section covers a different type: tax you overpaid because you missed deductions you were entitled to in the first place.

Under National Tax Basic Act Article 45-2, you can file an amended return (경정청구, 경정청구) for any income tax year within 5 years of the original filing deadline. The NTS recalculates your tax, and if you overpaid, it refunds the difference within 2 months of the claim.

Common deductions foreign residents miss:

• Rent credit (월세액 세액공제): available to registered foreign residents from tax year 2021 onward. Worth 15% to 17% of rent paid, up to ₩7.5 million in rent per year, for qualifying income levels.
• Medical expenses (의료비 세액공제) for you or your registered dependents.
• Education costs (교육비 세액공제).
• Overseas dependents: claimable but requires family relationship certificates and remittance records, and is a common rejection point if documentation is incomplete.
• Pension account deductions (연금계좌 세액공제).

Who can file:

• Any foreign resident whose employer ran year-end settlement (연말정산), which counts as a filed return for 경정청구 purposes.
• Freelancers and self-employed workers who filed a May comprehensive income tax return (종합소득세 신고).
• The current 5-year window covers tax years 2021 through 2025 (as of 2026).

Who cannot file:

• Foreigners who elected the 19% flat tax rate (외국인근로자 단일세율, under Special Tax Treatment Control Act Article 18-2) for a given year. Electing the flat rate means waiving all deductions, leaving nothing to recover.
• Foreigners who were non-residents for Korean tax purposes (fewer than 183 days in Korea) in those years. Non-residents do not qualify for most itemized deductions.
• Freelancers who never filed a May return and never did year-end settlement must first file a late return (기한후신고) before they can amend.

Rent credit for prior years: The rent credit opened to registered foreign residents only from tax year 2021, so claims for years before 2021 on that item are not available.

How to file:

• Hometax (hometax.go.kr): go to 세금신고 > 종합소득세 신고 > 경정청구. Login requires a joint certificate.
• Tax preparation apps such as 삼쩜삼 (3.3%) file 경정청구 on your behalf for a fee.
• Any tax office accepts paper applications with your ARC.

Scale: Taxpayers collectively recover trillions of won through amended returns (경정청구) each year. A single missed rent credit can be worth ₩1.02 million to ₩1.27 million per year for qualifying income levels.

Bonus: Long-term repair reserve at move-out (장기수선충당금 반환)

This is not a portal lookup. It is money your landlord owes you at the end of your lease, and most foreign tenants never ask for it.

What it is: Apartments and large managed buildings collect a long-term repair reserve (장기수선충당금) as part of the monthly maintenance fee (관리비). This money legally belongs to the building owner. Under Enforcement Decree of the Multi-Unit Housing Management Act (공동주택관리법 시행령) Article 31, if you paid this charge as a tenant, the landlord must refund the full accumulated amount when your lease ends.

Who qualifies: All tenants in apartments subject to mandatory management (의무관리대상 공동주택), generally buildings with 300 or more units, or 150 or more units with an elevator or central heating. All foreign tenants qualify on exactly the same basis as Korean tenants. No ARC, visa type, income, or Korean-spouse condition applies.

Who does not qualify:

• Tenants in small villas (빌라) and rowhouses that do not collect this charge.
• Officetel tenants: the Multi-Unit Housing Management Act does not apply to officetels. Whether you can recover the charge in an officetel depends on the building's own management rules (관리규약). Confirm with your management office before assuming a refund is due.
• Tenants whose lease includes a special clause (특약) explicitly assigning the long-term repair reserve to the tenant. Such clauses are legally valid and enforceable.

Typical amount: Industry analyses of 2024 management-fee data put the national average rate at roughly ₩279 per square meter per month. As a practical estimate, an 84 m² apartment accumulates about ₩20,000 to ₩25,000 per month, or roughly ₩560,000 over a standard 2-year lease. A stay of 4 or more years, or a larger unit, can push the total above ₩1 million. Your exact figure comes from the building office's ledger, not an average.

How to claim:

1. Before you move out, go to the management office (관리사무소) and request a payment-confirmation certificate (납부확인서). The management office must issue this without delay.
2. Present the certificate to your landlord and request the refund. There is no government portal for this: the claim is a private civil-law matter between you and your landlord, backed by statute.
3. If your landlord refuses, you have up to 10 years to pursue the civil claim under the general prescription period in the Civil Act, though resolution becomes harder once you leave the building.

Mid-lease landlord change: If your landlord changed during your lease due to a property sale, the new owner inherits the obligation. Request the 납부확인서 covering your entire lease period.

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FAQ

How long do I have to claim a national tax refund in Korea?

National tax refunds expire 5 years after the payment demand date under National Tax Basic Act Article 54. NHIS cap refunds expire 3 years from the mailed notice under National Health Insurance Act Article 91. Card points expire 5 years after accrual. Urban railway bond refunds (Seoul, Busan, Daegu) expire 5 years after bond maturity; regional development bond principal is claimable for 10 years after maturity.

Which Korean refund portals accept my Alien Registration Card number?

Hometax, nhis.or.kr, cardpoint.or.kr, sleepmoney.kinfa.or.kr, and 100lifeplan.fss.or.kr all accept foreign registration numbers (외국인등록번호). WeTax accepts ARC numbers but requires your name in all-caps English exactly as on the card. Smart Choice (smartchoice.or.kr) and 어카운트인포 (payinfo.or.kr) both require a Korean resident registration number and explicitly exclude foreign residents.

Can I claim Korean refunds after leaving Korea?

You can claim national tax and NHIS cap refunds after departure, but all payouts go to a Korean bank account in your own name. If you have already closed your Korean bank account, contact the relevant agency by phone to ask about redirecting the payment through a proxy or family member. Telecom refunds and car bond refunds are harder to access from overseas; handle those before you leave.

What is the NHIS out-of-pocket cap refund and who qualifies?

If your covered hospital bills in one calendar year total more than your income-based cap, NHIS refunds the excess. The 2025 caps run from ₩890,000 to ₩8,260,000 (as of 2026: verify at nhis.or.kr). Any NHIS member or enrolled dependent qualifies, including foreign residents on all visa types who have been enrolled for 6 months or more. Log in to nhis.or.kr or the The건강보험 app and check 환급금 조회·신청 to see if you have an uncollected refund.

Can I file an amended return (경정청구) if I never filed a Korean income tax return?

If your employer ran year-end settlement (연말정산) on your behalf, that counts as a filed return for 경정청구 purposes. Freelancers who never filed a May income tax return must first file a late return (기한후신고) and can then amend. Foreigners who elected the 19% flat tax rate and those who were non-residents for Korean tax purposes in those years cannot recover deductions via this route.

Does cardpoint.or.kr work for foreign residents in Korea?

Yes. The Credit Finance Association's FAQ explicitly states the portal is open to individual members including foreigners; only corporate members are excluded. You need a Korean phone number registered under your ARC for identity verification. If that step fails, open each card issuer's own app and convert points to cash from the points menu: all issuers must offer this option under a 2018 regulatory requirement.

What is the long-term repair reserve (장기수선충당금) and can I get it back from my landlord?

If you live in an apartment building subject to mandatory management (generally 300 or more units), part of your monthly maintenance fee goes to a long-term repair reserve that legally belongs to the building owner. Request a payment-confirmation certificate (납부확인서) from the management office before you move out, then present it to your landlord. The landlord must refund the full accumulated amount under Enforcement Decree of the Multi-Unit Housing Management Act Article 31. This does not apply to most officetels or small villas.

@misc{seoulstart-korea-unclaimed-money-guide,
  author = {{Seoulstart Editorial Team}},
  title = {{Unclaimed Money in Korea: 9 Refunds Foreign Residents Often Forget to Claim (2026)}},
  year = {2026},
  publisher = {Seoulstart},
  url = {https://seoulstart.com/guides/korea-unclaimed-money-guide},
  note = {Last updated July 15, 2026}
}