Interest and Dividend Tax Calculator

Interest and Dividend Tax Calculator helps estimate Korea-related investment or financial income tax from gains, cost basis, and rates.

Interest and dividend tax calculator

Use the Korean interest and dividend helper functions to estimate 15.4 percent withholding and dividend-income deduction effects.

Financial income

₩8,000,000

Interest tax

₩462,000

Dividend tax

₩585,200

Dividend deduction

₩1,200,000

Total tax

₩1,047,200

Net income

₩6,952,800

The full Korean guide also explains the KRW 20 million financial-income comprehensive-tax threshold; this quick panel calls the utility simple interest and dividend tax helpers for the displayed numbers. This English calculator calls the Korean page feature lib directly. The UI is translated, but the numbers come from the same pure calculation path instead of a generic value-times-rate stub.

Related calculators

Interest and dividend tax calculator

This English guide translates the Korean interest and dividend tax article and keeps the utility helpers for 15.4 percent withholding and dividend deduction effects.

Withholding and financial income threshold

Ordinary Korean interest income and domestic dividend income are commonly withheld at 15.4 percent, including local income tax. The simple calculator applies that withholding to interest and applies the dividend helper to dividend income.

The larger planning rule is the KRW 20 million financial-income comprehensive-tax threshold. When annual interest and dividend income exceed that threshold, comprehensive taxation can apply and the marginal rate may be higher than simple withholding.

Dividend deduction and foreign dividends

The Korean utility includes a dividend deduction concept with a cap, so dividend tax should not always be estimated by multiplying gross dividends by one rate. Domestic and foreign dividends can also have different withholding and foreign tax credit facts.

For foreign dividends, the actual result can depend on treaty withholding, brokerage reporting, exchange rate, and whether foreign tax credit evidence is available. The English guide keeps the simple helper result separate from final filing advice.

Planning use

Use this page to estimate whether expected interest and dividends are near the financial-income threshold and whether additional deposits, bonds, funds, or dividend stocks could move the taxpayer into comprehensive taxation.

For a final Korean tax return, reconcile bank interest certificates, dividend statements, foreign brokerage statements, and already withheld tax. The calculator provides a quick numeric screen, not a substitute for the evidence package.