How is the ₩20M threshold calculated?

Interest plus dividend income combined. Tax-exempt product income is excluded.

What is the 15.4% withholding rate?

14% income tax + 1.4% local income tax (10% of income tax).

No. Tax-exempt and separately taxed ISA income is not included in the ₩20M threshold.

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Compare separate (15.4%) vs comprehensive taxation on interest & dividends

Interest Income (10,000 KRW)

Dividend Income (10,000 KRW)

Other Comprehensive Income (10,000 KRW, employment/business)

Personal Deductions (10,000 KRW, dependents × 150)

Financial income (interest + dividends) under ₩20M/year: 15.4% withholding tax — filing done
Over ₩20M: excess amount is combined with other income for progressive taxation
If total exceeds ₩20M, you must file a comprehensive income tax return in May
Tax-exempt accounts (ISA, pension savings) are NOT counted toward the ₩20M threshold

How is the ₩20M financial income threshold calculated?

The combined total of interest and dividend income is compared to ₩20M. Income from tax-exempt products is excluded from this calculation.

What makes up the 15.4% withholding rate?

It consists of 14% income tax plus 1.4% local income tax (10% of the income tax portion).

Is my data saved?

No. All calculations happen entirely in your browser. No data is transmitted to any server.