When is a company dormant for Corporation Tax?

by Aitch, posted in Corporation Tax

A company does not have to be formally closed to become dormant for Corporation Tax. A company is usually considered dormant if it has stopped trading and has no other income, such as investment income.

A new limited company that has not yet started trading can also be dormant for Corporation Tax. Other examples include certain flat management companies and unincorporated associations or clubs owing less than £100 in Corporation Tax.

It is important to understand what counts as trading. For this purpose, activities can include buying or selling, renting property, advertising, employing someone or receiving interest. A company therefore needs to consider its activities carefully before assuming that it is dormant.

If a company has stopped trading and has no other income, it can tell HMRC that it is dormant for Corporation Tax. If HMRC has already issued a notice to deliver a Company Tax Return, the company must still file a return showing that it is dormant for the relevant period.

Once HMRC has been told that a limited company is dormant, it generally does not have to pay Corporation Tax or file further Company Tax Returns unless HMRC issues another notice.

Being dormant for Corporation Tax does not remove the company's Companies House obligations. A limited company must still file its annual accounts and confirmation statement.

If the company is VAT registered and does not intend to trade again, it must deregister for VAT within 30 days of becoming dormant. If it plans to restart trading, it must continue submitting nil VAT returns.

Dormant status should therefore be reviewed carefully, particularly when a company stops trading but continues to have financial activity.

Source:HM Revenue & Customs | 07-09-2026
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Aitch
I'm Aitch, the Founder and CEO of CIGMA Accounting Ltd. As a Chartered Management Accountant and as a CIMA member, I've spent more than 16 years helping businesses, entrepreneurs, landlords, and individuals with tax planning, accounting, and HMRC compliance. As a chartered accountant in London, I'm passionate about making complex tax matters easier to understand and helping clients make confident financial decisions. Over the years, I've advised start-ups, SMEs, established companies, and high-net-worth individuals across a wide range of tax and accounting matters. My expertise includes Corporation Tax, Self-Assessment, Capital Gains Tax, Inheritance Tax planning, R&D tax relief, capital allowances, international tax, and resolving complex HMRC compliance issues. Whether clients need a business accountant, tax accountant, or strategic tax advisor, my focus is always on delivering practical advice that creates long-term value. One of my specialist areas is Making Tax Digital (MTD). I've worked extensively with businesses preparing HMRC's digital reporting requirements, helping them move to cloud accounting, improve financial processes, and adopt technology that makes compliance more efficient. I regularly speak at Making Tax Digital roadshows, industry events, and educational sessions in collaboration with Zoho Books, sharing practical insights into digital accounting, tax legislation, and the future of the profession. Many business owners looking for the best accounting firm in London are not simply searching for an accountant they're looking for trusted advice, responsive support, and long-term value. That's the approach I've taken in building CIGMA Accounting. My team and I work closely with businesses across London and the UK, providing accounting services, tax advisory, bookkeeping, payroll, VAT, company accounts, and strategic tax planning tailored to each client's goals. Through this website, I share practical guidance on UK taxation, Making Tax Digital, HMRC updates, Corporation Tax, Self-Assessment, and business finance. My aim is to provide reliable, straightforward information that helps business owners understand changing regulations, reduce compliance risks, and make informed financial decisions with confidence.
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