
Korea's Overseas Stock Tax: The 2.5m Won Deduction and FX
Korea taxes overseas stock gains above 2.5 million won at 22%. Because the base is won-converted at settlement-date rates, an account down 5% in dollars can still owe 1.9 million won.

Korea taxes overseas stock gains above 2.5 million won at 22%. Because the base is won-converted at settlement-date rates, an account down 5% in dollars can still owe 1.9 million won.

Korea-listed foreign ETFs pay a 15.4% dividend tax on trading gains; US-listed ETFs pay 22% capital gains tax. Once the 2.5 million won deduction and loss offsetting enter the math, the advantage flips at 8.33 million won of annual gains.

Korea taxes overseas stock gains at 22% after an annual deduction of 2.5 million won. A 10 million won gain costs 1.65 million won — an effective rate of 16.5%. The settlement date, not the trade date, decides the tax year.

One SK hynix ADR equals 0.1 of an ordinary share. On July 14 the ADR traded 50.9% above the Seoul-listed stock. Here is the three-step math behind that number, and where the exchange rate and conversion limits enter it.