Corporation Tax Calculator

Calculate your business's corporation tax liability with our HMRC-compliant online tool.

Check Your Corporation Tax

Results

Adjusted Taxable Profit: £

Taxable profit after allowable expenses.

Effective Corporation Tax Rate: %

Effective tax rate after applying HMRC rates and marginal relief.

Corporation Tax Liability: £

Total tax payable for the accounting period.

Marginal Relief (if applicable): £

Relief applied for profits between £50,000 and £250,000.

Profit After Tax: £

Profit remaining after corporation tax deduction.

Tax Breakdown

Taxable Profit: £

Allowable Expenses: £

Dividends Paid: £

Tax Rate Applied: %

Tax Summary

Disclaimer: These calculations are estimates based on HMRC guidelines for 2025 and your inputs. Actual tax liability may vary due to specific allowances, reliefs, or other factors. For professional advice, consult a tax advisor or visit HMRC Corporation Tax Resources.

How to Use the Corporation Tax Calculator

Follow these simple steps to estimate your corporation tax liability:

Enter your taxable profit in pounds (£).

Select the length of your accounting period.

Input the dividends paid to shareholders.

Specify allowable expenses to reduce taxable profit.

Click "Calculate" to see your tax liability and detailed breakdown.

Get instant estimates for your corporation tax based on HMRC guidelines for April 2025.

Features of Our Corporation Tax Calculator

Calculates corporation tax based on 2025 HMRC rates (19% small profits, 25% main rate).

Applies marginal relief for profits between £50,000 and £250,000.

Accounts for allowable expenses to reduce taxable profit.

Supports variable accounting periods (1-12 months).

Provides detailed tax breakdown and profit after tax.

Responsive design for seamless use on any device.

Frequently Asked Questions

What is a corporation tax calculator?

A corporation tax calculator estimates the tax liability for UK companies based on taxable profits, applying HMRC rates and reliefs.

What are the UK corporation tax rates for 2025?

For 2025, the small profits rate is 19% for profits up to £50,000, and the main rate is 25% for profits over £250,000. Marginal relief applies for profits between £50,000 and £250,000.

What is marginal relief?

Marginal relief reduces the corporation tax rate for companies with profits between £50,000 and £250,000, gradually transitioning from 19% to 25%.

What are allowable expenses?

Allowable expenses are business costs that can be deducted from profits before tax, such as operating expenses, as per HMRC guidelines.