Corporate Tax Comparison

United Kingdom vs United States

Compare United Kingdom and United States corporate tax rates, filing due dates, withholding tax, VAT, capital gains tax, and effective tax metrics for cross-border company planning.

Published — United Kingdom: 2/14/2024 · United States: 2/14/2024 · Time of Update — United Kingdom: 9/24/2026 · United States: 9/21/2026

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Compare Corporate Tax

United Kingdom

United States

Basic Corporate Tax Comparison

PwC World Tax Summary OECD Statistics

Published — United Kingdom: 2/14/2024 · United States: 2/14/2024 · Time of Update — United Kingdom: 9/24/2026 · United States: 9/21/2026

Corporate Income Tax (CIT)

United Kingdom

United States

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.

General CIT Rate:

Federal corporate income tax: 21%. State corporate income tax varies by state, and some states do not impose one.

CIT Return Due Date:

Tax returns need to be submitted within one year after the end of the accounting period.

CIT Return Due Date:

April 15 for calendar-year corporations (15th day of the 4th month after the tax year-end); a 6-month filing extension to October 15 is available. State income tax returns usually follow the federal due date, with a few exceptions.

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:

Tax must be fully paid by the original due date of the return (April 15 for calendar-year corporations); the final estimated instalment is due on the 15th day of the 12th month of the tax year.

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:

Four equal instalments of estimated tax, due by the 15th day of the 4th, 6th, 9th and 12th months of the tax year (April 15, June 15, September 15 and December 15 for calendar-year corporations).

Withholding Tax (WHT)

United Kingdom

United States

Resident Withholding Tax (Dividend/Interest/Royalty):

0/20/20

Resident Withholding Tax (Dividend/Interest/Royalty):

0/0/0

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

0/20/20

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

30/30/30

Value-Added Tax (VAT)

United Kingdom

United States

General VAT Rate:

Learn More Value-Added Tax (VAT)

Capital Gain Tax (CGT)

United Kingdom

United States

General Capital Gain Tax Rate:

Capital gains are subject to the regular corporate tax rate.

General Capital Gain Tax Rate:

21% (aligned with the federal CIT rate for corporations)

Effective Tax Rate (ETR)

United Kingdom

United States

Composite Effective Average Tax Rate:

22.55

Composite Effective Average Tax Rate:

22.69

Composite Effective Marginal Tax Rate:

11.51

Composite Effective Marginal Tax Rate:

7.03

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