Foreign Earned Income Exclusion vs. Foreign Tax Credit
해외근로소득공제 vs. 외국납부세액공제 — 한국 거주 미국인을 위한 선택 가이드 2026
The exact Child Tax Credit mechanics (non-refundable vs. refundable ACTC), the Foreign Housing Exclusion add-on, why FTC usually wins for Korea, the "never on the same dollar" combination rule, and five fully computed examples.
Head-to-Head — Mechanism 두 제도의 작동 방식 비교
FEIE and FTC solve the same problem — double taxation on foreign income — through fundamentally different mechanisms. FEIE removes income from the U.S. return entirely. FTC keeps the income on the return but credits the foreign tax paid against the resulting U.S. tax.
FEIE — Requirements & Limits 해외근로소득공제 요건
Qualification — Two Tests, Either One Works
- Physical Presence Test: Present outside the U.S. for at least 330 full days during any 12-month period (not necessarily a calendar year). Days are counted precisely — any day with even partial U.S. presence does not count toward the 330.
- Bona Fide Residence Test: A genuine resident of a foreign country for an uninterrupted period that includes a full calendar year. Based on facts and circumstances — intent to remain, family location, community ties — not just day counting.
- Tax home requirement: In addition to one of the two tests, the taxpayer's "tax home" (main place of business or employment) must be in a foreign country for the entire qualifying period.
What FEIE Excludes — Earned Income Only
- Covered: Salary, wages, self-employment income from services performed abroad. The key test is where the work was physically performed — income from a U.S. company for work performed in Korea can qualify; income from a Korean company for work performed in the U.S. does not.
- NOT covered: Interest, dividends, capital gains, rental income, pension income, Korean severance (퇴직금), and any Korean business income not tied to personal services performed abroad.
Prorating for Partial Years
If the qualifying period (330 days or bona fide residence) does not cover the full calendar year, the $132,900 exclusion limit is prorated based on the number of qualifying days. A taxpayer who qualifies for only 200 days of the year can exclude only 200/365 of the annual limit.
FTC — How It Works 외국납부세액공제 작동 방식
The Foreign Tax Credit (Form 1116) credits foreign income taxes legally owed and paid against U.S. tax on the same foreign-source income. Unlike FEIE, there is no exclusion of income — the income remains on the tax return, but the resulting tax is offset.
- No dollar cap on the credit itself — but the credit is limited to the U.S. tax attributable to the foreign income (the "FTC limitation formula"). Korean tax paid in excess of this limitation becomes a carryover (1 year back, 10 years forward).
- Applies to both earned and passive Korean income — salary, business income, rental income, interest, dividends, capital gains, and PFIC-related tax.
- Requires Form 1116 in most cases (exception: the $300/$600 de minimis election for small amounts of passive-only foreign tax).
- Does not reduce U.S. self-employment tax — neither does FEIE. Self-employed Koreans should look to the U.S.–Korea Totalization Agreement for SE tax relief, not FEIE or FTC.
The Child Tax Credit Trap — Exact Mechanics 자녀세액공제 함정 — 정확한 작동 원리
The original claim that "FEIE eliminates Child Tax Credit eligibility" oversimplifies a more precise mechanism. The Child Tax Credit (CTC) for 2026 is $2,200 per qualifying child under 17, split into two components with very different behavior.
| CTC Component | Amount (2026) | How It Works | Effect of FEIE |
|---|---|---|---|
| Non-refundable CTC | Up to $2,200/child | Reduces U.S. tax liability dollar-for-dollar down to $0 — cannot go below $0 | Irrelevant if FEIE already reduced tax to $0 — there's no tax left to offset, so this portion provides no additional benefit either way |
| Refundable portion (Additional CTC / ACTC) | Up to $1,700/child | Can generate a cash refund even with $0 tax liability — but requires earned income that is NOT excluded by FEIE | If FEIE excludes ALL earned income, there is no qualifying earned income basis for ACTC — the refundable credit is lost. If some earned income remains taxable (above the FEIE limit, or FEIE not fully claimed), ACTC may still be available on that portion. |
IRA / Roth IRA Eligibility IRA · Roth IRA 기여 자격
- IRA contributions require "compensation" (earned income) for the year: Income excluded under FEIE does not count as compensation for IRA contribution purposes. A taxpayer who excludes 100% of their earned income under FEIE has $0 of IRA-eligible compensation for that year — and cannot contribute to a Traditional or Roth IRA.
- Partial FEIE exclusion preserves partial IRA eligibility: If a taxpayer earns $150,000 and excludes $132,900 under FEIE, the remaining $17,100 of non-excluded earned income can support an IRA contribution (subject to the annual contribution limit and any income phase-outs for Roth IRA).
- FTC preserves full IRA eligibility: Because FTC does not exclude any income, all Korean earned income remains as compensation for IRA contribution purposes — assuming income phase-out limits for Roth IRA are not exceeded.
Foreign Housing Exclusion — Often Forgotten 해외 주거비 공제 — 자주 놓치는 혜택
Taxpayers who qualify for FEIE may also claim the Foreign Housing Exclusion (employees) or Foreign Housing Deduction (self-employed) on Form 2555 — an additional benefit layered on top of the FEIE that was not addressed in the original document.
The One Rule That Governs Everything 모든 것을 지배하는 단 하나의 규칙
You can use both — but never on the same income.
This single rule explains the entire combination strategy. FEIE excludes the first $132,900 (or prorated amount) of qualifying earned income. Any income above that amount — and any foreign tax paid on the excluded portion — cannot also generate an FTC. But foreign tax paid on the non-excluded portion (income above the FEIE cap, plus all passive income) remains fully eligible for FTC.
Why FTC Usually Wins for Korea 한국에서는 왜 FTC가 보통 더 유리한가
The choice between FEIE and FTC depends heavily on the foreign country's tax rate relative to U.S. rates. Korea's progressive income tax structure (6%–45% national + 0.6%–4.5% local surtax, up to 49.5% combined top rate) generally exceeds comparable U.S. rates (up to 37% top federal rate) — making FTC the structurally superior choice for most Korean income levels.
| Country Type | Examples | Why | Generally Better Tool |
|---|---|---|---|
| High-tax countries | Korea, UK, Germany, France, Canada, Australia | Foreign tax rate ≥ U.S. tax rate on the same income — FTC fully or mostly offsets U.S. tax and generates valuable carryforward credits | FTC |
| Low/no-tax countries | UAE, Singapore, Hong Kong, Saudi Arabia | Foreign tax rate < U.S. tax rate — little or no foreign tax to credit, so FTC provides minimal benefit; FEIE removes the income entirely | FEIE |
Combining FEIE + FTC — High Earners 고소득자를 위한 FEIE + FTC 병용
For Korean-based taxpayers earning above the FEIE limit, combining both tools is often optimal — using FEIE on the first $132,900 and FTC for everything above that threshold plus all passive income.
Apply FEIE to the first $132,900 of qualifying Korean earned income (salary or self-employment from services performed in Korea), assuming the 330-day or bona fide residence test is met.
Korean tax paid on the FEIE-excluded $132,900 cannot be claimed as FTC — that tax is "wasted" in the sense that it offsets income that's already excluded. The taxpayer must allocate Korean tax proportionally between the excluded and non-excluded portions of income.
Korean salary above $132,900 remains taxable in the U.S. — apply Form 1116 (general basket) using the Korean tax attributable to that excess portion.
Korean rental income, interest, dividends, capital gains, severance, and business income not eligible for FEIE — all use Form 1116 (passive or general basket as applicable). FEIE never applies to these categories regardless of amount.
Side-by-Side Comparison Table 전체 비교표
| Feature | FEIE (Form 2555) | FTC (Form 1116) |
|---|---|---|
| Mechanism | Excludes income from the return | Credits foreign tax against U.S. tax |
| 2026 limit | $132,900 (prorated if partial year) | No dollar cap — limited by U.S. tax on the foreign income |
| Income types | Earned income only | Earned + passive income |
| Foreign tax required? | No | Yes |
| Qualification test | 330-day physical presence OR bona fide residence | None — any U.S. taxpayer with foreign tax paid |
| Non-refundable Child Tax Credit | Irrelevant once FEIE zeroes out tax — no benefit lost | Available; reduces tax to $0 |
| Refundable Additional CTC ($1,700/child) | Lost if FEIE excludes all earned income (no compensation base) | Preserved — income remains as earned income base |
| IRA/Roth IRA eligibility | Lost on excluded portion (no compensation) | Fully preserved |
| Self-employment tax | Not reduced (look to Totalization Agreement instead) | Not reduced (look to Totalization Agreement instead) |
| Foreign Housing Exclusion add-on | Available (up to $39,000 standard cap, 2026) | Not applicable |
| Carryover | None — unused exclusion simply expires each year | 1 year back, 10 years forward (general/passive baskets) |
| Korean salary | Eligible (up to limit) | Eligible (any amount) |
| Korean rental income | Not eligible | Eligible |
| Korean business income | Eligible only for personal-services portion | Fully eligible |
| Korean stock gains | Not eligible | Eligible (but often no Korean tax to credit — see listed stock exemption) |
| PFIC (Korean ETFs) | Not eligible | Eligible in principle, but PFIC computation is separate and complex |
| Revocation restriction | Once revoked, cannot re-elect for 5 years without IRS consent | No revocation restriction — choose annually |
5 Fully Computed Examples 실제 계산 사례 5개
| Korean salary | $80,000 |
| Korean tax paid (≈15% effective) | $12,000 |
| U.S. tax on $80,000 (after standard deduction, ~married/single mix) | ≈$10,000 |
| FTC: $10,000 credited (limited to U.S. tax); $2,000 carryforward | Net U.S. tax: $0. ACTC and IRA eligibility preserved. |
| FEIE alternative: excludes all $80,000; U.S. tax: $0; but ACTC lost, IRA contribution blocked | Same $0 tax result — but FTC preserves more benefits with zero downside |
| Korean salary | $200,000 |
| FEIE excludes first | $132,900 |
| Remaining taxable earned income | $67,100 |
| Korean tax on full $200,000 (≈25% effective) | $50,000 |
| Korean tax allocated to non-excluded $67,100 portion (proportional: 67,100/200,000 × $50,000) | ≈$16,775 |
| U.S. tax on $67,100 (after deduction, ~22% bracket) | ≈$13,800 |
| FTC on non-excluded portion: $13,800 credited (limited); ≈$2,975 carryforward | Net U.S. tax: $0 on the full $200,000 |
The Korean tax allocated to the FEIE-excluded $132,900 (≈$33,225) generates NO FTC — it is "used up" by the exclusion. Only the proportional Korean tax on the non-excluded $67,100 is creditable.
Korean rental income (net, after U.S. depreciation): $10,000. Korean rental tax: $1,800.
| FEIE applicability | NOT AVAILABLE — rental income is passive, not earned |
| FTC (passive basket): $1,800 Korean tax vs. ≈$1,500 U.S. tax limitation | $1,500 credited; $300 carryforward |
| Singapore salary | $100,000 |
| Singapore tax paid (low-tax jurisdiction) | $5,000 |
| U.S. tax on $100,000 (after deduction, ~22-24% bracket) | ≈$17,500 |
| FTC alternative: only $5,000 credited; $12,500 U.S. tax remains | FTC leaves $12,500 owed |
| FEIE: excludes the full $100,000; U.S. tax = $0 | FEIE saves $12,500 more than FTC in this scenario |
This is the textbook FEIE scenario: foreign tax rate far below U.S. rate, all income is earned (no passive income to worry about), and the taxpayer doesn't need ACTC or IRA contributions that year.
A Korean-American parent in Seoul with 2 qualifying children earns $70,000 in Korean salary. Korean tax paid: $9,000. U.S. tax on $70,000: ≈$7,200.
| FEIE path: excludes full $70,000; U.S. taxable income = $0 | U.S. tax: $0. But $0 earned income remains → ACTC basis = $0 → lose up to $3,400 (2 children × $1,700) in refundable credit |
| FTC path: $70,000 remains taxable; $7,200 U.S. tax credited by $9,000 Korean tax (capped at $7,200); $1,800 carryforward | U.S. tax: $0 (same result) AND $70,000 earned income base preserved → ACTC up to $3,400 available (subject to Schedule 8812 calculation) |
Both paths produce $0 U.S. tax — but only the FTC path preserves the family's ability to claim up to $3,400 in refundable Additional Child Tax Credit. This is the most common and most costly FEIE mistake for Korean-American families with children.
Common Mistakes 자주 발생하는 오류
- 1 Thinking FEIE applies to rental income, dividends, interest, or stock gains. FEIE applies exclusively to foreign earned income — wages and self-employment income from personal services performed abroad. All passive income categories require FTC; there is no FEIE alternative for them.
- 2 Using FEIE by default in a high-tax country like Korea without comparing to FTC. Korea's tax rates, particularly at moderate-to-high income levels, often meet or exceed comparable U.S. rates. Defaulting to FEIE without modeling both options frequently leaves money on the table — specifically the refundable ACTC and IRA contribution eligibility that FTC preserves at no additional cost.
- 3 Not understanding that the CTC impact is specifically about the refundable ACTC, not the credit broadly. The non-refundable portion of the CTC provides no benefit once FEIE has already zeroed out U.S. tax — there's nothing left to offset either way. The actual cost of FEIE is the lost refundable ACTC (up to $1,700/child), which requires an earned income base that FEIE eliminates.
- 4 Forgetting the Foreign Housing Exclusion when using FEIE. Taxpayers who qualify for FEIE and pay significant Korean housing costs (rent, utilities) can claim an additional exclusion (2026: up to $39,000 standard, higher in designated high-cost cities) on top of the $132,900 FEIE. Many taxpayers claim only the base FEIE and miss this substantial additional benefit.
- 5 Trying to claim FTC on Korean tax attributable to FEIE-excluded income. The fundamental rule — never the same dollar twice — means Korean tax paid on the portion of income excluded by FEIE cannot also generate an FTC. Only Korean tax on the non-excluded portion (income above the FEIE limit, or passive income) is FTC-eligible. Claiming both on the same income is a definitional double-dip that IRS will disallow.
- 6 Not knowing about the 5-year FEIE revocation restriction. If a taxpayer elects FEIE in one year and later revokes the election (e.g., switching entirely to FTC), the FEIE election cannot be made again for 5 years without specific IRS consent. This makes the initial choice between FEIE and FTC consequential — not a decision to be made carelessly or reversed casually each year.
- 7 Forgetting that FEIE and FTC neither reduce self-employment tax. A Korean freelancer using FEIE to exclude self-employment income still owes full U.S. SE tax (15.3%) on that excluded income — FEIE only affects income tax, not SE tax. The U.S.–Korea Totalization Agreement, not FEIE or FTC, is the mechanism for SE tax relief when the taxpayer contributes to Korean National Pension.
- 8 Not modeling all three scenarios (FEIE only, FTC only, combination) before filing. For taxpayers earning above the FEIE limit, near the limit, or with mixed earned/passive income, the optimal strategy is rarely obvious without running the numbers. A side-by-side computation of all three approaches — done once at the start of Korean residency — establishes the right default strategy and avoids costly trial-and-error across multiple tax years.
Hanmi CPA Insight
The choice between FEIE and FTC is rarely close for Korean-based taxpayers once the full picture is modeled — but the original simplified comparisons that most people read miss the precise mechanism that makes FTC valuable beyond simply "matching" FEIE's tax-to-zero result. Both tools can reduce U.S. tax to $0 on $80,000 of Korean salary. The difference is what happens around that $0 — whether the family can still claim a $3,400 refundable child credit, whether the taxpayer can still fund a Roth IRA, and whether next year's excess Korean tax carries forward as a usable credit or simply evaporates. These secondary effects, not the headline U.S. tax number, are where the real decision lies for most Korean-American families.
The Foreign Housing Exclusion is the most consistently overlooked benefit in this entire analysis. A Korean-American expat paying $30,000+ per year in Seoul rent and utilities who claims only the base FEIE is leaving a four- or five-figure additional exclusion unclaimed. This is not a complex election — it is a straightforward Form 2555 worksheet calculation that simply requires knowing it exists. Every FEIE-eligible Korean-American with above-average housing costs should have this calculation run as a matter of course.
The 5-year FEIE revocation lock is the planning trap that catches taxpayers who treat the FEIE-vs-FTC choice as a casual annual decision. A taxpayer who used FEIE for several years, then revokes it to switch to FTC (perhaps after realizing the ACTC and IRA cost), cannot go back to FEIE for 5 years without IRS consent — even if their circumstances change (e.g., moving to a lower-tax country where FEIE would again be optimal). This makes the initial election, and any decision to revoke it, a multi-year strategic choice rather than a year-by-year optimization — one that should be modeled carefully with a CPA before the first election is made, not adjusted reactively each filing season.