Do You Need to Report Korean Stocks or Brokerage Accounts? — 2026
한국 주식·증권 계좌 신고 의무 완전 가이드
FBAR, FATCA, and PFIC requirements for Korean brokerage accounts, directly held Korean stocks, Korean ETFs and mutual funds (KODEX, TIGER, ARIRANG), pension accounts (IRP, 연금저축), and the three PFIC taxation methods — with the critical pre-arrival liquidation strategy.
Asset-by-Asset Reporting Map 자산 유형별 신고 의무 한눈에 보기
Korean investment holdings create obligations under up to three separate reporting regimes: FBAR (account-based, FinCEN), FATCA Form 8938 (asset-based, IRS), and PFIC Form 8621 (fund-specific, IRS). The correct reporting depends on what type of asset is held and how it is held.
Korean Brokerage Accounts — FBAR & FATCA 한국 증권 계좌 — FBAR · FATCA 신고
Korean securities accounts — whether holding individual stocks, ETFs, bonds, cash, or a combination — are foreign financial accounts for FBAR purposes and specified foreign financial assets for FATCA purposes. Both reporting requirements apply independently.
| Reporting Obligation | Threshold | What to Report for Korean Brokerage |
|---|---|---|
| FBAR (FinCEN 114) | Aggregate all foreign accounts >$10,000 at any point during the year | Maximum total value of the account (securities at peak market value + cash balance) at any point during the calendar year. Report for each brokerage account separately: institution name, account number, maximum balance in USD. |
| FATCA Form 8938 | Single: >$50K year-end / $75K any time. MFJ: >$100K / $150K | The total value of the brokerage account (securities + cash) on December 31 OR the maximum value at any time during the year — whichever triggers the threshold first. |
Valuation of Securities for FBAR
- Use fair market value — not book value or cost basis: For FBAR purposes, securities are valued at their fair market value (market price) on the date of the maximum balance — not the original purchase price. A Korean stock account with 1,000 shares of Samsung Electronics at peak price KRW 80,000/share = KRW 80,000,000 × (treasury rate) = FBAR-reportable balance.
- Cash balance in the account also counts: The total FBAR-reportable value is securities (at peak FMV) plus any cash held in the brokerage account. If the peak securities value and peak cash balance occurred on different days, use the peak total account value day.
- Use the Treasury December 31 rate to convert KRW to USD: For FBAR maximum balance conversion, use the Treasury Financial Management Service (FMS) December 31 rate — the same rate regardless of when during the year the peak balance occurred.
Directly Held Korean Stocks — FATCA Only 직접 보유 한국 주식 — FATCA만 해당
Korean stocks held directly — through paper share certificates (주권), a direct transfer agent account, or direct registration in a company's shareholder registry — without a brokerage account intermediary are not foreign financial accounts for FBAR purposes. However, they are "specified foreign financial assets" for FATCA and must be reported on Form 8938 if the FATCA threshold is met.
Korean ETFs & Mutual Funds — PFIC Rules 한국 ETF · 펀드 — PFIC 규정
Korean domestic ETFs (KODEX, TIGER, ARIRANG, KBSTAR, HANARO) and Korean mutual funds (주식형 펀드, 채권형 펀드, 혼합형 펀드, 부동산 펀드) are almost universally classified as Passive Foreign Investment Companies (PFICs) under U.S. tax law. This is because they are foreign corporations that meet one of two PFIC tests:
- Income test: 75% or more of the corporation's gross income for the taxable year is passive income (dividends, interest, capital gains from investment assets).
- Asset test: 50% or more of the corporation's assets produce or are held for the production of passive income.
Korean mutual funds and ETFs hold primarily stocks, bonds, and investment securities — passive assets that produce passive income. Virtually all Korean domestic funds meet the PFIC definition. Once a fund is a PFIC, holding it while a U.S. tax resident triggers the PFIC reporting and tax regime — regardless of whether distributions were received or the fund was sold.
3 PFIC Taxation Methods PFIC 과세 3가지 방법
Once a Korean ETF or mutual fund is identified as a PFIC, there are three methods of U.S. taxation. The default method (§1291) is the most punitive. Two elections — QEF and Mark-to-Market — can reduce the tax burden but must be made timely.
- Applies automatically if no election is made
- Any distribution exceeding 125% of the prior 3-year average is an "excess distribution"
- All excess distributions and gains on sale are allocated backward over the entire holding period
- Each prior year's allocated amount is taxed at the highest ordinary income rate for that year(currently 37%) — regardless of actual marginal rate
- Interest charged on each year's deferred tax from the original due date to the current date
- Gains cannot qualify for preferential LTCG rates
- Effective rate can exceed 50% once interest charges are added
- Best avoided. Korean funds held many years compound dramatically under this regime
- Available for marketable stock(funds listed on a qualified exchange — KODEX ETFs on KRX qualify)
- Each year: recognize unrealized gain (or loss up to prior MTM gains) as ordinary income
- Eliminates the interest-charge problem — no retroactive allocation
- Gains are ordinary income (not LTCG rates) — typically less favorable than QEF for long-term growth
- Must make the election on a timely filed return for the first year the fund qualifies
- Once elected, applies each year; can be revoked only with IRS consent
- Useful when: QEF information is not available from the fund
- Requires the PFIC to provide an "Annual Information Statement" with income and gain data
- Each year: report your pro-rata share of the PFIC's ordinary income and capital gains — even if no distributions were received
- Capital gains retain preferential LTCG rates
- No retroactive interest charge — tax paid annually on accrued income
- Must elect on a timely filed Form 8621 for the first year of PFIC ownership
- Korean domestic funds rarely provide Annual Information Statements — making QEF practically difficult for most Korean funds
- Best method when available — but availability depends on fund cooperation
Critical: Liquidate PFICs Before U.S. Residency Begins 필수: 미국 거주자 시작 전 한국 펀드 청산
Korean mutual funds and ETFs sold before the U.S. residency start date are Korean-source capital gains realized while a non-resident alien. Korean-source gains of non-resident aliens are generally not taxable in the U.S. — the sale is simply outside U.S. tax jurisdiction.
The same funds sold after the residency start date are subject to the full PFIC excess distribution regime — potentially taxed at 37% plus daily compound interest back to the original purchase date, potentially across many years of holdings.
Selling Korean funds the day before the first U.S. arrival can save tens of thousands of dollars. This is not a loophole — it is the correct application of the residency rules. Non-residents are not taxable on Korean-source capital gains; U.S. residents are taxable with PFIC treatment. The date of residency is the dividing line.
| Scenario | U.S. Tax Result |
|---|---|
| KODEX 200 ETF sold June 30 — residency starts July 1 (sold 1 day before) | Sale is Korean-source gain realized as a non-resident. NOT taxable in the U.S. Any Korean capital gains tax withheld at source is the only tax obligation. |
| Same KODEX 200 ETF sold July 2 — residency started July 1 (sold 1 day after) | PFIC excess distribution rules apply from the original purchase date. All gain allocated backward across holding years at 37% plus interest. Could generate a U.S. tax liability exceeding the gain itself on a long-held fund. |
| KODEX 200 ETF held through July 1 (not sold — just held as residency begins) | The fund becomes a PFIC in the taxpayer's hands from July 1. Form 8621 must be filed. If no timely election: the §1291 excess distribution regime begins accruing — affecting future distributions and eventual sale. |
| Korean domestic 주식형 펀드 sold in June (pre-residency) — held 5 years, large gain | NOT taxable in U.S. — Korean-source gain, non-resident period. Korean capital gains tax withheld per Korean rules. No U.S. PFIC consequence. No Form 8621 ever required. |
Korean Pension Accounts 한국 연금 계좌
| Account Type | FBAR? | FATCA? | PFIC? | Notes |
|---|---|---|---|---|
| 국민연금 (NPS) | NO | NO | NO | Government social insurance — not a financial account at a financial institution. No foreign reporting required. |
| IRP (개인형 퇴직연금) | YES | YES | MAYBE | Financial account at a Korean bank or securities firm with a defined balance. If IRP holds Korean ETFs or mutual funds: those underlying holdings may create PFIC reporting. If IRP holds only deposits and Korean individual stocks: PFIC generally does not apply. |
| 연금저축펀드 (pension savings fund) | YES | YES | LIKELY YES | If the pension savings fund holds Korean domestic mutual funds or ETFs as underlying investments: PFIC applies to those underlying positions. The pension account itself is reportable on FBAR and FATCA; the underlying PFIC funds require Form 8621. |
| 연금저축보험 (pension savings insurance) | YES | YES | NO | Insurance-based pension savings (no underlying publicly traded funds). Generally not a PFIC. Report on FBAR and FATCA as a specified foreign financial asset with cash surrender value. |
| 퇴직연금 DC/DB (company account, individual name) | YES | YES | DEPENDS | If you have a named account at a Korean financial institution with a defined balance attributable to you: reportable on FBAR and FATCA. PFIC applies if underlying investments include Korean funds. |
Korean Stock Capital Gains on U.S. Return 한국 주식 양도소득 미국 신고
Capital gains from selling Korean stocks (individual operating company stocks — not PFICs) are reportable on the U.S. tax return as worldwide income, using Schedule D and Form 8949. The U.S. capital gains tax rules apply, including the holding period distinction between short-term and long-term gains.
- Korean residents generally exempt from Korean capital gains tax on listed stock sold on KRX (소액주주 면세)
- Non-residents: 11% or 22% withholding on Korean stock gains depending on treaty status
- K-OTC or unlisted stock: subject to Korean capital gains tax
- Korean withholding on gains → creditable on Form 1116 (passive basket) if also taxable in U.S.
- Report on Form 8949 (individual transactions) → Schedule D
- Holding period counted from original Korean purchase date
- STCG (held ≤12 months): ordinary income rates up to 37%
- LTCG (held >12 months): 0%, 15%, or 20% rates (2026 thresholds)
- Cost basis in USD: purchase price × KRW/USD rate on purchase date
- Proceeds in USD: sale price × KRW/USD rate on sale date
- Cost basis is the KRW purchase price converted at the exchange rate on the date of purchase: To calculate U.S. capital gain on a Korean stock, the taxpayer needs (a) the original purchase price in KRW, (b) the KRW/USD exchange rate on the purchase date, (c) the sale proceeds in KRW, and (d) the KRW/USD rate on the sale date. Each transaction requires this four-point calculation.
- Holding period for LTCG uses the original Korean purchase date: A Korean stock purchased in 2020 and sold in 2026 has been held more than 12 months — it qualifies for LTCG rates in the U.S. regardless of when the taxpayer became a U.S. resident. The U.S. holding period clock runs from the original purchase date, not from the residency start date.
- Korean capital gains tax withheld (if any) is creditable via Form 1116 passive basket: Korean withholding on listed stock capital gains is rare for Korean residents (소액주주 exempt) but may apply to non-residents. If Korean tax was withheld on the gain, that tax is creditable on U.S. Form 1116 in the passive income basket against U.S. tax on the same gain.
Step-by-Step Filing Checklist 단계별 신고 체크리스트
List every Korean investment: brokerage accounts, CMA accounts, directly held stocks (paper certificates or direct registration), Korean ETFs and mutual funds, pension accounts (IRP, 연금저축, DC/DB). Identify whether each holding is a PFIC (ETF or mutual fund) — individual company stocks are generally not PFICs.
For FBAR: find the highest total value of each Korean brokerage account (securities at market value + cash) at any point during the year. For FATCA: find the highest total value of all specified foreign financial assets on December 31 or at any point during the year. Convert KRW to USD using the Treasury December 31 rate.
File FinCEN Form 114 electronically through bsaefiling.fincen.treas.gov by April 15 (automatic extension to October 15). Report each Korean brokerage and pension account separately: institution name, account number, maximum balance in USD, account type.
Attach Form 8938 to Form 1040 if foreign financial assets exceeded $50,000 year-end or $75,000 at any time (single) or $100,000/$150,000 (MFJ). Report both account-type assets (brokerage) and non-account assets (directly held stocks, life insurance).
File a separate Form 8621 for each Korean ETF or mutual fund held if any of the 5 filing triggers apply. If total PFIC value exceeds $25,000 (single) or $50,000 (MFJ), annual §1298(f) reporting is required. Determine whether QEF, MTM, or default §1291 regime applies — consult a CPA for PFIC elections.
For Korean stocks sold during the U.S. residency period: report each transaction on Form 8949. Calculate USD cost basis (purchase price × purchase-date rate) and USD proceeds (sale price × sale-date rate). Identify as short-term (<12 months) or long-term (>12 months). Total on Schedule D.
If Korean withholding tax was applied on dividends or capital gains from Korean stocks, claim the FTC on Form 1116 (passive income basket). Do not confuse creditable taxes (소득세, 지방소득세) with non-creditable social insurance premiums.
5 Case Examples 실제 사례 5개
A Korean-American holds a 삼성증권 account with Samsung Electronics and Hyundai stock (individual company stocks — not ETFs or funds). Peak account value during 2026: KRW 34,000,000 (≈ $24,800 at 1,370 KRW/$). No sales during the year; no dividends.
| FBAR: $24,800 peak account value exceeds $10,000 aggregate | FBAR required — 삼성증권 reported with $24,800 max balance |
| FATCA (single, U.S. resident): $24,800 below $50,000 threshold | Form 8938 NOT required this year |
| PFIC: Samsung Electronics and Hyundai are operating companies — not PFICs | No Form 8621 required |
| Capital gains income: $0 (no sales during the year) | Nothing to report on Schedule D |
A Korean-American holds KODEX 200 ETF (tracks KOSPI 200) in NH투자증권. Position value: KRW 18,000,000 (≈ $13,140). No sale during the year. Received dividends of KRW 270,000 (≈ $197). KODEX 200 is an ETF of Korean stocks — a PFIC.
| FBAR: $13,140 peak account value — contributes to aggregate | FBAR required (as part of total foreign accounts) |
| PFIC: KODEX 200 is an ETF (passive investment vehicle) = PFIC. Total PFIC value $13,140 < $25,000 single threshold for §1298(f) annual reporting | Form 8621 may not be required this year if no distributions above threshold and no sale — BUT consult a CPA; dividends received may constitute a distribution requiring Form 8621 Part V analysis |
| If no timely QEF or MTM election was made when position was initiated | Default §1291 excess distribution regime applies to any future distribution or sale |
Recommendation: Liquidate the KODEX position before the residency start date. Sold pre-residency as a non-resident alien → Korean-source capital gain → not taxable in U.S. Held post-residency → PFIC consequences accumulate with every year held.
A Korean-American inherited 500 shares of Samsung Electronics directly registered in their name (no brokerage account). Current FMV: KRW 110,000/share × 500 = KRW 55,000,000 ≈ $40,150. No dividends received during 2026.
| FBAR: No account at a foreign financial institution — directly held stock is not an account | FBAR NOT required for directly held stock |
| FATCA (single, U.S. resident): $40,150 is below $50,000 year-end threshold | Form 8938 NOT required (below threshold this year) |
| PFIC: Samsung Electronics is an operating company — NOT a PFIC | No Form 8621 |
If the value exceeds $50,000 on December 31 or $75,000 at any time, Form 8938 would be required. The FBAR is never required because this is directly held stock (no financial institution account).
A Korean national held a Korean domestic 주식형 펀드 (equity mutual fund) for 4 years with an original investment of KRW 20,000,000 and current value KRW 30,000,000 (gain: KRW 10,000,000 ≈ $7,300). Moving to U.S. on July 1, 2026.
| Option A: Sell the 펀드 on June 30 (before residency starts on July 1) | Gain is Korean-source income of a non-resident alien. NOT taxable in U.S. Korean redemption tax withheld as per Korean rules. No PFIC consequences ever. No Form 8621. Zero U.S. tax on the $7,300 gain. |
| Option B: Hold the 펀드 through July 1 (residency begins) | 펀드 immediately becomes a PFIC in the taxpayer's hands. Default §1291 regime applies from original purchase date (4 years ago). Future sales or distributions: gain allocated back 4 years at 37% + interest. Effective tax rate on eventual $7,300 gain could exceed $3,000. |
The only difference is a single day. Selling June 30: $0 U.S. tax. Holding through July 1: PFIC treatment, potentially $3,000+ in U.S. tax plus interest at eventual disposition. The pre-residency liquidation recommendation is not a planning strategy — it is the elimination of a trap.
A Korean-American holds an IRP (개인형 퇴직연금) account at Shinhan Bank. IRP balance: KRW 25,000,000 (≈ $18,250). The IRP holds KODEX 200 ETF as the underlying investment.
| FBAR: IRP account at Shinhan Bank is a foreign financial account | Report IRP on FBAR with $18,250 maximum balance |
| FATCA: IRP is a specified foreign financial asset | Report on Form 8938 if total foreign assets above threshold |
| PFIC: KODEX 200 inside the IRP — is this a PFIC? | Yes — the underlying ETF is a PFIC. Whether Form 8621 is required for PFIC held inside an IRP requires CPA analysis of whether the IRP is treated as transparent or opaque for U.S. tax purposes. Complex — professional guidance essential. |
The interaction between Korean pension accounts and PFIC rules is one of the most complex areas in Korean-American tax practice. The IRP itself is reportable on FBAR and FATCA; the underlying ETF holdings inside the IRP may or may not create independent PFIC reporting obligations depending on how the IRP structure is characterized under U.S. tax law.
Common Mistakes 자주 발생하는 오류
- 1 Treating all Korean stocks as PFICs. Korean individual company stocks — Samsung, Hyundai, LG, Kakao, Naver — are operating businesses. They are NOT PFICs. Only investment funds, ETFs, and fund-like structures qualify as PFICs under the income test or asset test. Applying PFIC rules to individual Korean company stocks is incorrect and overcomplicates compliance unnecessarily.
- 2 Not liquidating Korean ETFs and mutual funds before the U.S. residency start date. This is the most common and most expensive pre-arrival planning error. Korean funds sold before the residency start date generate Korean-source capital gains taxable only in Korea (or not at all, if within Korean exemptions). The same funds held through the residency start date become PFICs immediately, with retroactive consequences on every future distribution or sale. The window to liquidate tax-free closes on the day before first U.S. arrival.
- 3 Not filing Form 8621, which leaves the statute of limitations open indefinitely. Failure to file a required Form 8621 for a PFIC suspends the statute of limitations on the entire tax return for the years in which the form was omitted. This means any Korean fund held during U.S. residency without a corresponding Form 8621 creates an unlimited lookback period for IRS audit of those years — indefinitely.
- 4 Reporting only the December 31 brokerage account value for FBAR instead of the peak value during the year. FBAR requires the maximum value reached by the account at any point during the year — not the year-end closing balance. A Korean brokerage account that peaked at KRW 40,000,000 in March and ended at KRW 15,000,000 on December 31 must report the March peak value (converted at the December 31 Treasury rate) on the FBAR.
- 5 Forgetting Korean CMA accounts. CMA (Cash Management Account) accounts at Korean securities firms hold short-term money market instruments and earn interest. They are foreign financial accounts for FBAR purposes — reportable with maximum balance. The interest earned is also reportable on Schedule B. CMA accounts are commonly overlooked because they are managed like bank accounts rather than investment accounts.
- 6 Calculating Korean capital gains without proper currency conversion. The U.S. capital gain on a Korean stock is the USD proceeds minus the USD cost basis — each converted at the exchange rate on the respective transaction dates, not the current rate or a single year's average rate. Using the same exchange rate for both purchase and sale eliminates the currency component of the gain or loss, which is a required element of the correct calculation.
- 7 Not reporting Korean pension accounts (IRP, 연금저축) on FBAR and FATCA. Korean pension savings accounts at financial institutions — IRP, 연금저축펀드, 연금저축보험 — are foreign financial accounts with defined balances. They are reportable on both FBAR and FATCA. Only 국민연금 (the government-administered National Pension Service) is exempt from both.
- 8 Assuming the default §1291 PFIC regime is the only option once the fund is held as a U.S. resident. The MTM election (§1296) is available for Korean ETFs listed on a qualified exchange (KRX) and must be made on a timely filed Form 8621 for the first taxable year of PFIC ownership. The MTM election eliminates the retroactive interest charge problem — it does not preserve capital gains rates but is substantially better than the default regime for funds that cannot provide QEF information. Consult a CPA before the filing deadline of the first year of PFIC ownership.
Hanmi CPA Insight
Korean investment accounts create three overlapping compliance obligations — FBAR (account disclosure), FATCA (asset disclosure), and PFIC (fund-specific income reporting) — and the failure to address any one of them produces separate, compounding consequences. The FBAR and FATCA obligations are manageable: they require accurate documentation and timely filing but do not change the amount of tax owed. The PFIC obligation is different in character — it directly affects how much tax is owed, potentially doubling or tripling the effective tax rate on Korean fund gains through retroactive allocation and compound interest charges.
The pre-residency liquidation of Korean mutual funds and ETFs is the most high-leverage action available to any Korean national preparing to move to the U.S. The math is straightforward: a Korean domestic 펀드 with KRW 20,000,000 in unrealized gains, sold the day before the first U.S. arrival, generates zero U.S. tax. The same fund sold three years after arrival under the default §1291 regime generates: the gain allocated backward at 37% for each year held, plus daily compound interest from each prior year's due date to the current date. In practice, this can mean paying more in U.S. tax and interest than the actual gain itself. The pre-residency sale is not tax avoidance — it is the correct application of the principle that non-residents are not taxable on Korean-source capital gains.
The PFIC statute of limitations suspension is underappreciated as a compliance risk. Most taxpayers and even some tax professionals think about PFIC primarily as a tax computation problem — how the gain is calculated. The more immediate risk for many Korean-Americans is that an undisclosed Korean ETF holding, held for several years without Form 8621 filing, leaves the entire tax return for those years permanently open to IRS audit with no limitations period. A Korean-American who held KODEX during residency years 2020–2024 without filing Form 8621 has, in effect, kept four tax returns permanently open for IRS review of all items — not just the PFIC. The cure for this situation is to file all delinquent Form 8621s, which restores the normal statute of limitations. The delinquent filing does not automatically trigger penalties but does require PFIC tax computations for all prior years.