CT600 Marginal Relief Explained — How to Calculate Corporation Tax 2024-25
Marginal relief reduces corporation tax for companies with profits between £50,000 and £250,000. Learn how it works, how to calculate it, and how it appears on your CT600.
Plain-English guides to UK Corporation Tax and CT600 filing.
Marginal relief reduces corporation tax for companies with profits between £50,000 and £250,000. Learn how it works, how to calculate it, and how it appears on your CT600.
All UK Corporation Tax rates for 2025/26 including small profits rate, main rate, marginal relief, and associated company rules. With worked examples.
Complete guide to Corporation Tax rates for 2025/26. How the 19% small profits rate and 25% main rate work, marginal relief explained with examples.
Understanding the CT600 tax calculation boxes — Corporation Tax rates, marginal relief, tax payable, and payments on account. Every box explained.