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Dividend Calculator (Korea Tax, DRIP)

Calculate dividends before and after South Korea tax (15.4%, or 15% US withholding on US stocks), with ISA, a reinvestment simulation and a goal-based reverse calculation.

Inputs

Shares held

Share price (KRW)

Dividend per share per payment (KRW)

What one share receives in a single payment.

Other interest and dividends (per year, KRW, optional)

Add deposit interest and the like to check the ₩20 million threshold.

Also show separate taxation for high-dividend companies

After-tax dividends per year₩846,000

Monthly average (after tax): ₩70,500
Tax per year: −₩154,000
Dividend yield: 10%

Per-payment and yearly breakdown

Per payment (pre-tax): ₩1,000,000
Income tax 14%: −₩140,000
Local income tax 1.4%: −₩14,000
Per payment (after tax): ₩846,000
Per year (pre-tax): ₩1,000,000
Tax per year: −₩154,000
Monthly average (after tax): ₩70,500
Amount invested: ₩10,000,000
Dividend yield: 10%

Tax per year in a standard ISA₩0Tax-free up to ₩2 million, 9.9% above that (10% local income tax assumed). ISAs settle several years together at maturity, so actual tax may differ.

Work back from a goal

After-tax dividends wanted per month (KRW)

For Korean stocks, 14% income tax and 1.4% local income tax are withheld, each rounded down to the won; for US stocks, the 15% Korea–US treaty rate is withheld. Based on South Korea tax residents. No prices or dividends are fetched, and this isn’t investment advice.

Reinvestment simulation

Calculates month by month what reinvesting dividends grows to. Price and dividend are assumed to change smoothly at the growth rates you enter.

Period (years)

1–50 years

Extra investment per month (optional, KRW)

Dividend growth per year (%)

−50 to 50; blank means 0

Price growth per year (%)

−50 to 50; blank means 0

Reinvest after-tax dividends

Buy whole shares only (leftover cash carries over)

Value after 10 years: ₩22,526,618
Amount put in: ₩10,000,000
Total after-tax dividends: ₩12,526,618
Final-year yield on cost: 10%

A 15.4% tax is withheld on every payment.

Year-by-year table

Year	Shares	After-tax dividends	Value
Year 1	1,084.59	₩846,000	₩10,846,000
Year 2	1,176.35	₩917,572	₩11,763,572
Year 3	1,275.87	₩995,198	₩12,758,770
Year 4	1,383.81	₩1,079,392	₩13,838,162
Year 5	1,500.88	₩1,170,708	₩15,008,870
Year 6	1,627.86	₩1,269,750	₩16,278,621
Year 7	1,765.57	₩1,377,171	₩17,655,792
Year 8	1,914.94	₩1,493,680	₩19,149,472
Year 9	2,076.95	₩1,620,045	₩20,769,517
Year 10	2,252.66	₩1,757,101	₩22,526,618

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How to use

Everything you enter is processed only in this browser.

Enter Korean or US stocks, the shares (or amount) and the price
Choose the dividend per share or yield, the frequency and the account
Check after-tax dividends, the reinvestment simulation and the goal calculation

How it works and good to know

For Korean stocks, 14% income tax and 1.4% local income tax (15.4% in total) are withheld on each payment, rounded down to the won; for US stocks, the 15% Korea–US treaty rate is withheld. Because that 15% exceeds Korea’s rate, usually nothing more is due in South Korea, but it still counts toward the ₩20 million financial income total. ISAs are tax-free up to ₩2 million (₩4 million for the low-income type) with 9% above that (10% local income tax assumed); pension accounts are calculated without tax on payment. Separate taxation for high-dividend companies (Article 104-27 of Korea’s Restriction of Special Taxation Act) is only compared at its bracket rates; companies aren’t classified. The reinvestment simulation runs month by month and assumes prices and dividends change smoothly at your growth rates. No prices or dividends are fetched, and this isn’t investment advice.

Dividend Calculator (Korea Tax, DRIP)

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