The CT600 is the official name for the Corporation Tax Return form that UK companies must submit to HMRC each year. On this form, you declare your company’s income, expenses, and profits, and calculate how much Corporation Tax you owe. Filing the CT600 accurately and on time is crucial to staying compliant as a company director.
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Tax Guide UK Editorial Team: Our team of financial writers, tax researchers, and editors is dedicated to making UK tax easier to understand — and easier to manage. Every article is thoroughly researched, regularly updated, and written in plain English to help you stay compliant and confident.View Author posts