UK Corporation Tax Calculator
Calculate your company’s corporation tax liability based on current UK rates and thresholds.
UK Corporation Tax Explained
Corporation Tax is a tax on company profits in the UK. The rates and rules change periodically, so it’s important to use up-to-date calculations.
Current Corporation Tax Rates (2024/25)
- Main rate: 25% for profits over £250,000
- Small profits rate: 19% for profits up to £50,000
- Marginal relief: Gradual increase between £50,000 and £250,000
What Counts as Profit?
Your taxable profits include:
- Trading profits from your business
- Investment income
- Chargeable gains from selling assets
Allowable Deductions
You can deduct many business expenses including:
- Staff salaries and benefits
- Office costs and business premises
- Travel and subsistence
- Marketing and advertising
- Professional fees (accountants, lawyers)