Corporate Tax Comparison

Estonia vs South Korea

Compare Estonia and South Korea corporate tax rates, filing due dates, withholding tax, VAT, capital gains tax, and effective tax metrics for cross-border company planning.

Time of Update — Estonia: 4/05/2026 · South Korea: 4/04/2026

Base Country/Region

Compare Country/Region

Compare Corporate Tax

Estonia

South Korea

Basic Corporate Tax Comparison

PwC World Tax Summary OECD Statistics

Time of Update — Estonia: 4/05/2026 · South Korea: 4/04/2026

Corporate Income Tax (CIT)

Estonia

South Korea

General CIT Rate:

Estonia does not tax retained earnings. Distributed profits are taxed at a rate of 20%. A reduced rate of 14% applies to regularly distributed dividends. From 2025, the general rate for distributed profits will increase to 22%.

General CIT Rate:

Progressive: 10% (up to 200M KRW), 20% (200M-20B KRW), 22% (20B-300B KRW), 25% (over 300B KRW)

CIT Return Due Date:

Corporate income tax is assessed and declared monthly.

CIT Return Due Date:

Mid-term tax returns: within two months from the end of the six-month period; annual tax returns: within three months from the end of the fiscal year.

CIT Payment Due Date:

CIT on distributed profits is payable upon distribution.

CIT Payment Due Date:

The submission of the declaration form (instalment payments are allowed in the case of elections).

CIT Estimated Payment Due Date:

Not applicable as tax is only due on distribution.

CIT Estimated Payment Due Date:

Withholding Tax (WHT)

Estonia

South Korea

Resident Withholding Tax (Dividend/Interest/Royalty):

0/0/0

Resident Withholding Tax (Dividend/Interest/Royalty):

Non-Resident Withholding Tax (Dividend/Interest/Royalty):

0/0/10

Non-Resident Withholding Tax (Dividend/Interest/Royalty):

Value-Added Tax (VAT)

Estonia

South Korea

General VAT Rate:

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Value-Added Tax (VAT)

General VAT Rate:

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Value-Added Tax (VAT)

Capital Gain Tax (CGT)

Estonia

South Korea

General Capital Gain Tax Rate:

Estonia does not have a separate capital gains tax; gains are taxed as regular income at the corporate rate when distributed.

General Capital Gain Tax Rate:

25 (the same as the normal CIT rate for corporations over 300B KRW taxable income)

Effective Tax Rate (ETR)

Estonia

South Korea

Composite Effective Average Tax Rate:

17.0%

Composite Effective Average Tax Rate:

24.87%

Composite Effective Marginal Tax Rate:

0.0%

Composite Effective Marginal Tax Rate:

22.0%

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