You want exposure to US indexes, and there are two routes. ① Buy a Korea-listed ETF that tracks a US index, or ② buy the US-listed ETF directly. Same index — but the tax is calculated completely differently. Not a different rate: a different tax head altogether.
⭐⭐⭐ Which is cheaper therefore flips with the size of your gain.
Solving for where the two are equal gives an annual realised gain of about KRW 8.33 million (our own calculation).
⚠️ The rates below come from an asset manager's private material; the calculation is ours.
⭐ First — it's not the rate, it's the tax head
| Korea-listed overseas equity | Listed abroad | |
|---|---|---|
| ⭐ Tax head | dividend income | ⭐ capital gains |
| Rate | 15.4% | 22% |
| Annual exemption | ⚠️ none | ⭐ KRW 2.5 million |
| Basis | ⭐ holding-period — “the lesser of the year's NAV rise and the actual realised gain” | the realised gain itself |
| Distributions | 15.4% | 15.4% |
⭐⭐ Rows two and three pull in opposite directions. The overseas route has a higher rate but an exemption; the Korea-listed route has a lower rate and no exemption. So the exemption dominates at small gains and the rate gap dominates at large ones.
⭐⭐⭐ The crossover sits near 8.33 million won
⭐ The arithmetic (our own calculation). With P as the annual realised gain —
Listed abroad = (P − 2.5m) × 22%
Korea-listed overseas = P × 15.4%
Equal when P = 550,000 ÷ (0.22 − 0.154) = about KRW 8.33 million
⭐ Check: 8.33m × 15.4% = 1.283m / (8.33m − 2.5m) × 22% = 1.283m — they match
| Annual realised gain | Listed abroad | Korea-listed overseas | Lower |
|---|---|---|---|
| KRW 2m | 0 | 308,000 | ⭐ abroad |
| KRW 5m | 550,000 | 770,000 | ⭐ abroad |
| ⭐ KRW 8.33m | 1,283,000 | 1,283,000 | equal |
| KRW 10m | 1,650,000 | 1,540,000 | ⭐ Korea-listed |
| KRW 50m | 10,450,000 | 7,700,000 | ⭐ Korea-listed (2.75m apart) |
⚠️⚠️ Do not take this table as the conclusion. Three things are missing.
- ⚠️ Holding-period basis is not modelled. The Korea-listed route taxes only “the lesser of the two,” so the real bill can be below 15.4% — which pushes the crossover lower than 8.33 million.
- ⚠️ Aggregate financial income taxation is not modelled. The Korea-listed route is dividend income and may be aggregated with other financial income; we could not verify the thresholds. The overseas route is a different tax head.
- ⚠️ Currency conversion is excluded. Buying abroad means buying in dollars. Working back two Korean bank exchange screens gave spreads of about 1.73% and 1.75% on US dollar cash — see the spread article.
⚠️ And one thing changed in 2025
ETFs holding foreign stocks are taxed abroad first — the cited rates are 15% in the US, 10% in China, 15.315% in Japan. How that foreign tax is handled changed in 2025.
| Previously | ⚠️ From 2025 | |
|---|---|---|
| Foreign tax paid | refunded in advance, added to the pre-tax dividend | ⚠️ advance refund abolished |
| Korean taxable base | the pre-tax dividend | the amount net of foreign tax |
| Effect | ⭐ more to reinvest | ⚠️ the refund arrives later |
⭐ The settlement is simple — “if the foreign rate exceeds the Korean rate (15.4%) nothing further is due; if it is lower, only the difference is taxed.” ⚠️ What changed is timing, not the amount, and the source notes “tax deferral and compounding effects may be partly reduced.”
⚠️ Pension accounts carry a separate issue — 3.3–5.5% pension income tax applies again at withdrawal, which the source calls “a structure where double taxation can arise.” The whole tax picture is in the ETF tax guide.
Beyond tax
| Korea-listed overseas | Listed abroad | |
|---|---|---|
| Currency | won | ⚠️ dollars — conversion needed |
| Trading hours | Korean market hours | ⚠️ overnight in Korea |
| Choice of products | ⚠️ narrower | ⭐ much wider |
| Price versus NAV | ⚠️ both — the SEC writes that an ETF's market price “may reflect a premium or a discount” to NAV | |
| Deposit insurance | ⚠️ neither — “not guaranteed or insured by the FDIC or any other government agency” | |
⚠️ Product counts and trading costs were not verified numerically, so only the direction is stated. What to check before picking a fund is in the selection guide.
So how to decide
| If this is you | Leans toward | Basis |
|---|---|---|
| Annual realised gain under 2.5m | ⭐ listed abroad | the exemption makes it zero |
| Annual realised gain below roughly 8.33m | listed abroad | the calculation above (ours) |
| Annual realised gain above 10m | ⭐ Korea-listed | the 6.6pp rate gap outweighs the exemption |
| ⚠️ You trade often | ⚠️ don't generalise | realisation timing and FX costs recur |
| ⚠️ You have large other financial income | ⚠️ get advice | aggregation thresholds not verified |
Questions that remain
Is 8.33 million a fixed threshold?
⚠️ No — it is our calculation and a simplified one. Adding holding-period basis lowers the Korea-listed bill, which moves the crossover below 8.33 million. Aggregate taxation and FX costs are excluded entirely. Treat it as a sense of where it flips, not a rule.
Does the 2.5 million exemption reset each year?
The source says “the first KRW 2.5 million a year is exempt.” ⚠️ Whether it pools across all overseas holdings, whether it carries over, and how filing works are not in the source.
Can I just use both?
⚠️ This article recommends no particular allocation. The table does show that the first 2.5 million of gain abroad is untaxed and that the Korea-listed route improves as gains grow. Any actual split depends on your realisation plans and other financial income.
How much does currency conversion cost?
Two Korean bank exchange screens, worked back, gave spreads of about 1.73% and 1.75% on US dollar cash — roughly 2,500 won per 100 dollars. ⚠️ Brokerage preferential rates differ and were not verified. The structure is in the spread article.
What if I hold it in a pension account?
⚠️ The source flags possible double taxation — an amount already taxed abroad can face 3.3–5.5% pension income tax at withdrawal. ISA and pension account rules themselves are not covered by this source.
Same index, two tax heads: 15.4% dividend income on one side, 22% capital gains with a 2.5-million exemption on the other. The lower rate is Korea-listed, yet the exemption wins at small gains — and the crossover lands near 8.33 million won.
Sources
- ⚠️ Kiwoom Asset Management (an asset manager's own material, not agency source text) — Kiwoom Lounge, “ETF taxes…” (19 August 2025; compliance review no. 2025-259). ⭐⭐ Source for holding-period taxation (“15.4% on the lesser of the year's NAV rise and the actual realised gain”), ⭐⭐ 22% capital gains tax abroad with a KRW 2.5m annual exemption, 15.4% on distributions, foreign withholding rates (US 15%, China 10%, Japan 15.315%) and the 2025 abolition of the advance refund, and the pension-account “structure where double taxation can arise” with 3.3–5.5% pension income tax. ⚠️⚠️ The same article links repeatedly to the firm's own ETF products.
- ⭐ Korea National Tax Service — withholding tax rate table (residents and domestic corporations; screen checked July 2026). Source for “other dividend income — 14%.” ⚠️ The remaining 1.4% (local income tax) is not in this table.
- US Securities and Exchange Commission — ETFs. Source for “an ETF's market price may reflect a premium or a discount to the ETF's underlying value or NAV” and “not guaranteed or insured by the FDIC or any other government agency.”
- ⭐ Our own calculation. The 8.33 million crossover and the tax-by-gain table are computed by us from the rates above and appear in no source. The equation is (P − 2.5m) × 22% = P × 15.4%, and both sides were checked to equal 1,283,000 won.
What we could not verify
- ⚠️⚠️ The real crossover with holding-period basis included. The Korea-listed route taxes “the lesser of the two,” so the effective rate can be below 15.4% — but we have no data to quantify it. Read 8.33 million as an upper bound.
- ⚠️⚠️ Aggregate financial income thresholds. We confirmed only that the Korea-listed route is dividend income; the aggregation rules and brackets were not verified.
- ⚠️ Scope, carry-over and filing of the 2.5 million exemption. Not in the source.
- ⚠️ Brokerage FX rates. The 1.7%-range spread was recovered from bank screens; brokerage terms were not verified.
- ⚠️ The statutory basis for these rates — taken from private material, not checked against Income Tax Act provisions.
- Product counts, trading hours and dealing costs on either side — direction only.
- Practical differences in reinvesting distributions. The SEC notes that reinvesting an ETF distribution “can be more complicated than with mutual funds” and may incur additional brokerage commissions, but we could not compare the two Korean routes.
As of July 2026. Rates come from an asset manager's private material, the 14% dividend rate from Korea's National Tax Service withholding table, and ETF structure from US SEC source text — with the tier of each marked. ⭐ The 8.33 million figure is our calculation. ⚠️ Tax law changes and outcomes vary by situation — get professional advice for large amounts. For the whole tax picture see the ETF tax guide; for conversion costs, exchange rate spreads. This is general information, not tax or financial advice.
