Corporation Tax Calculator for UK (2025/26)

Easily estimate how much corporation tax your limited company owes. Built for UK Businesses and Accounting firms.

Corporation Tax Calculator for UK (2025/26)

Limited Company Calculator

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Your results

Enter your figures and select Calculate to see a full breakdown.

Current UK Corporation Tax Rates (2025/26)

Small Profits Rate

19 percent on profits up to the lower limit.
Lower limit is £50,000 for a 12 month period with one company. It scales by the number of associated companies and by period length.

Marginal Relief

Applied on the slice between the lower and upper limits to taper effective rate smoothly.
Gives a marginal rate of 26.5 percent on that slice. Effective overall rate rises from 19 percent to 25 percent as profit increases.

Main Rate

25 percent on profits at or above the upper limit.
Upper limit is £250,000 for a 12 month period with one company. It scales by the number of associated companies and by period length.

Automated test cases

Figures are rounded to the nearest pound for display, tolerance ±1.

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Your Next Move Starts Here

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Swati Yadav
Business Development Manager QXAS
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