Use our UK corporation tax calculator to estimate how much tax your company might owe based on its annual taxable profit and accounting period end date. This tool provides a quick and straightforward way to check your corporation tax liability using current rates, taking into account marginal relief where appropriate. It’s ideal for most companies with a standard 12-month accounting period, no associated companies, and where augmented profit equals taxable profit.
Enter your company’s taxable profit and the accounting period end date to start. If applicable, the calculator will then break down the calculation across financial years, show your estimated corporation tax bill, and provide the effective tax rate. Whether you’re a director, accountant, or business owner, our calculator offers a reliable tax checker and planning aid for your corporate tax obligations.
UK Corporation Tax Calculator
Assumptions:
- 12-month accounting period.
- Augmented profits equal taxable profits.
- No associated companies.
Calculation Summary
Details
Financial Year ( days)
Period:
Apportioned Profit:
Adjusted Upper Limit:
Tax before Marginal Relief:
Marginal Relief (if applicable):
Tax for this period:
Financial Year ( days)
Period:
Apportioned Profit:
Adjusted Upper Limit:
Tax before Marginal Relief:
Marginal Relief (if applicable):
Tax for this period:
Additional Resources
Check out our in-depth article if you need more information about corporation tax computations.
If your company has a longer or shorter accounting period, associated companies, or receives distributions from non-group companies, the official HMRC corporation tax and marginal relief calculator may be more appropriate.