How to Amend a CT600 — Correcting Mistakes on Your Corporation Tax Return
Filed your CT600 and spotted an error? Here's how to amend your Corporation Tax return, the time limits, and what happens if HMRC finds the mistake first.
Plain-English guides to UK Corporation Tax and CT600 filing.
Filed your CT600 and spotted an error? Here's how to amend your Corporation Tax return, the time limits, and what happens if HMRC finds the mistake first.
What is a directors' loan account? How does it affect your CT600? When does Section 455 tax apply? A complete guide for small company directors.
Your dormant company still needs to file a CT600 with HMRC. Learn what counts as dormant, how to file, and the fastest way to stay compliant for just £59.
What is an accounting period for Corporation Tax? How to work out your dates, what happens in your first year, and how periods affect your CT600 deadlines.
How to claim capital allowances on your CT600. AIA, full expensing, car rules, and writing down allowances for small companies.
Just set up a limited company? Everything you need to know about your first CT600 — when it is due, what to include, and how to file.
The most frequent errors company directors make when filing their CT600. From wrong dates to missing boxes — and how to get it right first time.
Learn how to file your CT600 corporation tax return online step by step. Plain English guide covering deadlines, common mistakes and what you need to start.
Complete guide to CT600 late filing penalties and charges. How much you'll pay, when penalties apply, and how to appeal HMRC penalty decisions.
Complete checklist of records and documents needed for CT600 filing. How long to keep them, what HMRC expects, and how to organize everything.
Honest assessment of when you need an accountant for CT600 filing vs when you can do it yourself. Costs, complexity, and decision factors explained.
When is your CT600 due? Your company tax return deadline is 12 months after the accounting period ends. Late filing means automatic penalties.