Year-end accounts and CT600
When year-end accounts and Corporation Tax are due, and how to complete the CT600 company tax return.
Articles
Corporation Tax deadlines
When CT600 returns and Corporation Tax payments are due. Filing deadline is 12 months after period end; payment is 9 months and 1 day.
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CT600 guide
How to complete and file your company tax return. What goes in each section and the most common mistakes to avoid.
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What is Corporation Tax?
Corporation Tax is the tax companies pay on profits. Here is how the rates and bands work from April 2023 onwards.
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