A corporation tax return is more than a formality—it is the legal mechanism that UK limited companies use to report profits, claim reliefs, and settle Corporation Tax with HM Revenue & Customs (HMRC). Whether you run a newly incorporated micro‑entity, a dormant startup awaiting investment, or a growing small business with staff and assets, getting the CT600 right protects cash flow, avoids penalties, and provides a reliable financial record of your company’s year. Despite its reputation, CT600 compliance does not need to be stressful or expensive. With clear steps, accurate records, and the right digital tools, directors can file with confidence. This guide breaks down what the return contains, how…