Singapore vs South Korea
Corporate Tax Comparison
Time of Update: Singapore: 4/04/2026 / South Korea: 4/04/2026
Compare Singapore and South Korea corporate tax rates, filing due dates, withholding tax, VAT, capital gains tax, and effective tax metrics for cross-border company planning.
Singapore vs South Korea Corporate Tax Comparison
Basic Corporate Tax Comparison
Corporate Income Tax (CIT)
Singapore
South Korea
General CIT Rate:
17
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:
November 30
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:
Tax assessment notice shall be delivered within one month.
CIT Payment Due Date:
The submission of the declaration form (instalment payments are allowed in the case of elections).
CIT Estimated Payment Due Date:
The estimated income tax assessment must be submitted within three months after the end of the company's fiscal year. The estimated tax should be paid within one month after receiving the assessment notice, or paid in installments according to the installment payment plan.
CIT Estimated Payment Due Date:
N/A
Withholding Tax (WHT)
Singapore
South Korea
Resident Withholding Tax (Dividend/Interest/Royalty):
NA
Resident Withholding Tax (Dividend/Interest/Royalty):
None-Resident Withholding Tax (Dividend/Interest/Royalty):
0/15/10
None-Resident Withholding Tax (Dividend/Interest/Royalty):
Value-Added Tax (VAT)
Capital Gain Tax (CGT)
Singapore
South Korea
General Capital Gain Tax Rate:
N/A
General Capital Gain Tax Rate:
25 (the same as the normal CIT rate for corporations over 300B KRW taxable income)
Effective Tax Rate (ETR)
Singapore
South Korea
Composite Effective Average Tax Rate:
16.09%
Composite Effective Average Tax Rate:
24.87%
Composite Effective Marginal Tax Rate:
13.15%
Composite Effective Marginal Tax Rate:
22.0%
