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.
Blog
Plain-English guides to UK Corporation Tax and CT600 filing.
184 results for “ct600”Clear search
Company Cars & Corporation Tax: Capital Allowances, BIK, and CT600 Treatment
How company cars affect corporation tax. Capital allowances for cars, benefit in kind rules, and CT600 treatment.
Can't Pay Your Corporation Tax? How to Set Up an HMRC Payment Plan
Can't afford your corporation tax bill? Learn how to set up an HMRC Time to Pay arrangement and avoid penalties.
Changing Your Company's Accounting Period: How It Affects Your CT600
What happens to your CT600 when you change your accounting period? Guide to the rules, restrictions, and filing implications.
Sole Trader vs Limited Company: Full Tax Comparison (2025/26)
Should you incorporate? Tax comparison between sole trader and limited company at every profit level — income tax, NI, dividends.
HMRC Free CT600 Filing Ends March 2026: Your 5 Best Alternatives
HMRC free CT600 filing ends 31 March 2026. Compare the best alternatives by price, features, and ease of use.
CT600 Supplementary Pages Explained: Which Ones Does Your Company Need?
CT600 supplementary pages explained: CT600A through CT600P. Find out which ones your company needs and how to complete them.
Corporation Tax Group Relief: How to Share Losses Between Companies
How to use corporation tax group relief to share losses between companies. 75% ownership test, consortium relief, and filing.
How to File a Nil CT600 Return for a Dormant Company
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.
iXBRL Accounts: What Are They and Why You Need Them for Your CT600
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.
HMRC Corporation Tax Online Account: How to Set Up and Use It
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 for Freelancers: A Complete Guide for Limited Company Contractors
Corporation tax guide for freelancers with a limited company. Covers allowable expenses, IR35, dividends, and filing your CT600.