Company Struck Off or Dissolved? You May Still Need to File a CT600
Company struck off or dissolved? You may still owe corporation tax. When a final CT600 is required and how to restore a company.
Plain-English guides to UK Corporation Tax and CT600 filing.
Company struck off or dissolved? You may still owe corporation tax. When a final CT600 is required and how to restore a company.
How company cars affect corporation tax. Capital allowances for cars, benefit in kind rules, and CT600 treatment.
CT600 supplementary pages explained: CT600A through CT600P. Find out which ones your company needs and how to complete them.
Non-UK company with UK activities? When you must register for corporation tax, file a CT600, and what counts as a permanent establishment.
New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.
Received an HMRC enquiry about your CT600? What triggers enquiries, your rights, what HMRC can ask, and how to respond.
Find out how long HMRC takes to process your CT600 company tax return, when you'll get your tax calculation, and what to do if it's taking too long.
Free CT600 filing software compared. HMRC's free filing service closed in March 2026 — here's what it offered and what to use instead.
Step-by-step guide to filing a nil Corporation Tax return for your dormant limited company. Avoid penalties — even dormant companies must file with HMRC.
What iXBRL accounts are, why HMRC requires them with your CT600, and how to generate them without expensive software. Plain English guide for company directors.
Step-by-step guide to setting up your HMRC Corporation Tax online account. Register, activate, and manage your company tax — including how to file your CT600.
Corporation tax guide for freelancers with a limited company. Covers allowable expenses, IR35, dividends, and filing your CT600.