South Korea vs Vietnam
Corporate Tax Comparison
Time of Update: South Korea: 4/04/2026 / Vietnam: 4/05/2026
Compare South Korea and Vietnam corporate tax rates, filing due dates, withholding tax, VAT, capital gains tax, and effective tax metrics for cross-border company planning.
South Korea vs Vietnam Corporate Tax Comparison
Basic Corporate Tax Comparison
Corporate Income Tax (CIT)
South Korea
Vietnam
General CIT Rate:
Progressive: 10% (up to 200M KRW), 20% (200M-20B KRW), 22% (20B-300B KRW), 25% (over 300B KRW)
General CIT Rate:
20
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 Return Due Date:
For CIT finalisation, the due date is the last day of the 3rd month of the following financial year.
CIT Payment Due Date:
The submission of the declaration form (instalment payments are allowed in the case of elections).
CIT Payment Due Date:
The same as the deadline for submission of the final CIT return (i.e. the last day of the 3rd month of the following financial year).
CIT Estimated Payment Due Date:
N/A
CIT Estimated Payment Due Date:
Quarterly payments must be made no later than the 30th day of the next quarter.
Withholding Tax (WHT)
South Korea
Vietnam
Resident Withholding Tax (Dividend/Interest/Royalty):
Resident Withholding Tax (Dividend/Interest/Royalty):
0/5/10
None-Resident Withholding Tax (Dividend/Interest/Royalty):
None-Resident Withholding Tax (Dividend/Interest/Royalty):
0/5/10
Value-Added Tax (VAT)
Capital Gain Tax (CGT)
South Korea
Vietnam
General Capital Gain Tax Rate:
25 (the same as the normal CIT rate for corporations over 300B KRW taxable income)
General Capital Gain Tax Rate:
Vietnamese companies: capital gains taxed at the standard 20% CIT rate. Foreign sellers: from December 15, 2025, capital transfers generally subject to 2% CIT on sale proceeds. Securities transfers by foreign entities: 0.1% CIT on total sales proceeds.
Effective Tax Rate (ETR)
South Korea
Vietnam
Composite Effective Average Tax Rate:
24.87%
Composite Effective Average Tax Rate:
N/A
Composite Effective Marginal Tax Rate:
22.0%
Composite Effective Marginal Tax Rate:
N/A
