United Kingdom vs South Korea
Corporate Tax Comparison
Time of Update: United Kingdom: 4/02/2026 / South Korea: 4/04/2026
Compare United Kingdom and South Korea corporate tax rates, filing due dates, withholding tax, VAT, capital gains tax, and effective tax metrics for cross-border company planning.
United Kingdom vs South Korea Corporate Tax Comparison
Basic Corporate Tax Comparison
Corporate Income Tax (CIT)
United Kingdom
South Korea
General CIT Rate:
1. Companies with profits exceeding £250,000 are subject to a main rate of 25% (effective from 1 April 2023).
2. Companies with profits not exceeding £50,000 are subject to a small profits rate of 19% (effective from 1 April 2023).
3. A tapered tax rate applies to profits falling between £50,000 and £250,000.
2. Companies with profits not exceeding £50,000 are subject to a small profits rate of 19% (effective from 1 April 2023).
3. A tapered tax rate applies to profits falling between £50,000 and £250,000.
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:
Tax returns need to be submitted within one year after the end of the accounting period.
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:
According to the scale of the payment company, there may be differences. For more information, please refer to the UK company summary.
CIT Payment Due Date:
The submission of the declaration form (instalment payments are allowed in the case of elections).
CIT Estimated Payment Due Date:
According to the scale of the payment company, there may be differences. For more information, please refer to the UK company summary.
CIT Estimated Payment Due Date:
N/A
Withholding Tax (WHT)
United Kingdom
South Korea
Resident Withholding Tax (Dividend/Interest/Royalty):
0/20/20
Resident Withholding Tax (Dividend/Interest/Royalty):
None-Resident Withholding Tax (Dividend/Interest/Royalty):
0/20/20
None-Resident Withholding Tax (Dividend/Interest/Royalty):
Value-Added Tax (VAT)
Capital Gain Tax (CGT)
United Kingdom
South Korea
General Capital Gain Tax Rate:
Capital gains are subject to the regular corporate tax rate.
General Capital Gain Tax Rate:
25 (the same as the normal CIT rate for corporations over 300B KRW taxable income)
Effective Tax Rate (ETR)
United Kingdom
South Korea
Composite Effective Average Tax Rate:
22.55
Composite Effective Average Tax Rate:
24.87%
Composite Effective Marginal Tax Rate:
11.51
Composite Effective Marginal Tax Rate:
22.0%
