UK Corporation Tax Calculator 2025
Calculate your business tax liability with HMRC’s latest rates
Your Corporation Tax Breakdown
Understanding UK Corporation Tax 2025
The UK Corporation Tax system has three main rates for the 2025/26 financial year:
Small Profits Rate
19% on profits up to £50,000
Ideal for small businesses and startups with lower profits.
Marginal Relief
Sliding scale between £50,001-£250,000
Gradual tax increase for medium-sized companies.
Main Rate
25% on profits over £250,000
Applies to larger corporations with substantial profits.
Key Changes for 2025
- No changes to tax bands from 2024
- Digital tax reporting mandatory for all companies
- Increased penalties for late filings
