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Free tool
Estimate limited company corporation tax, including marginal relief between the two rates.
Enter your taxable profits and see an estimate of the corporation tax due, including marginal relief where profits fall between the small profits rate and the main rate.
Associated companies and accounting periods shorter or longer than twelve months both change the limits, so both are inputs rather than assumptions.
Provisional figures
Enter your taxable profits to see an estimate of the corporation tax due for the period.
What this does not include
These calculators give estimates based on standard UK tax rules and the figures we hold for the selected tax year. They do not account for every individual circumstance and are not tax advice. Always check your position with HMRC or speak to us before making a decision based on a figure here.
Being clear about the limits is what keeps an estimate honest.
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A calculator gives you a number. These are the services behind it.
Clear financial statements that show what your business earned, owns and owes over a period.
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