Iceland vs United Kingdom
Corporate Tax Comparison
Time of Update: Iceland: 4/04/2026 / United Kingdom: 4/02/2026
Compare Iceland and United Kingdom corporate tax rates, filing due dates, withholding tax, VAT, capital gains tax, and effective tax metrics for cross-border company planning.
Iceland vs United Kingdom Corporate Tax Comparison
Basic Corporate Tax Comparison
Corporate Income Tax (CIT)
Iceland
United Kingdom
General CIT Rate:
20 (for LLCs and limited partnerships); 37.6 (for other entities)
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.
CIT Return Due Date:
31 May
CIT Return Due Date:
Tax returns need to be submitted within one year after the end of the accounting period.
CIT Payment Due Date:
November 1st and December 1st
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 Estimated Payment Due Date:
Except for January and October, prepayments should be made on the first day of each month.
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.
Withholding Tax (WHT)
Iceland
United Kingdom
Resident Withholding Tax (Dividend/Interest/Royalty):
22/22/0
Resident Withholding Tax (Dividend/Interest/Royalty):
0/20/20
None-Resident Withholding Tax (Dividend/Interest/Royalty):
21/13/22
None-Resident Withholding Tax (Dividend/Interest/Royalty):
0/20/20
Value-Added Tax (VAT)
Capital Gain Tax (CGT)
Iceland
United Kingdom
General Capital Gain Tax Rate:
20 (for corporations, same as CIT rate for LLCs); 22 (for individuals)
General Capital Gain Tax Rate:
Capital gains are subject to the regular corporate tax rate.
Effective Tax Rate (ETR)
Iceland
United Kingdom
Composite Effective Average Tax Rate:
18.79%
Composite Effective Average Tax Rate:
22.55
Composite Effective Marginal Tax Rate:
14.93%
Composite Effective Marginal Tax Rate:
11.51
