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Corporation Tax Filing Service UK Online

HMRC & Compliance · 9 min read ·

Professional corporation tax filing service for UK limited companies. Learn about CT600 returns, deadlines, payment dates, and how TaxRoot handles everything.

Written by Krishna, Founder & HMRC-registered tax agent at TaxRoot.

What is the corporation tax rate for 2025/26?

The main corporation tax rate is 25 percent for companies with profits over £250,000. The small profits rate is 19 percent for companies with profits under £50,000. Companies with profits between £50,000 and £250,000 benefit from marginal relief, resulting in an effective rate between 19 and 25 percent. These thresholds…

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