Corporation Tax on Cryptocurrency: How to Report Bitcoin & Crypto on Your CT600
How UK companies pay corporation tax on crypto. Buying, selling, mining, staking, DeFi, and NFTs — what goes on your CT600.
Blog
Plain-English guides to UK Corporation Tax and CT600 filing.
186 results for “corporation tax”Clear search
Do I Need to File a CT600? When Your Company Must Submit a Tax Return
Find out whether your limited company needs to file a CT600 Corporation Tax return with HMRC. Covers dormant companies, new companies, losses, and exemptions.
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.
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.
HMRC Enquiry Into Your CT600: What to Expect and How to Respond
Received an HMRC enquiry about your CT600? What triggers enquiries, your rights, what HMRC can ask, and how to respond.
Marginal Relief for Corporation Tax: How It Works (With Calculation Examples)
How marginal relief works for Corporation Tax in 2025/26. Step-by-step calculation for profits between £50,000 and £250,000.
Working from Home Tax Relief for Limited Companies: What You Can Claim
How to claim work-from-home expenses through your limited company. Flat rate method, actual costs, and allowable expenses.
Corporation Tax Interest: Late Payment Rates, Repayment Interest & How to Avoid Charges
HMRC charges interest on late corporation tax at base rate + 4% — currently 7.75%. Learn current rates, how interest is calculated, and how to avoid it.
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.
Just Incorporated? Your First CT600 Timeline: Key Dates You Can't Miss
New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.
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.