What Is a UTR Number? How to Find Yours for CT600 Filing
Your Unique Taxpayer Reference (UTR) explained — what it is, where to find it, how it differs from your company number, and why you need it for CT600 filing.
Plain-English guides to UK Corporation Tax and CT600 filing.
Your Unique Taxpayer Reference (UTR) explained — what it is, where to find it, how it differs from your company number, and why you need it for CT600 filing.
What happens if HMRC opens an enquiry into your CT600. Your rights, the process, time limits, and how to respond.
Complete guide to Corporation Tax rates for 2025/26. How the 19% small profits rate and 25% main rate work, marginal relief explained with examples.
All the ways to pay your Corporation Tax to HMRC — bank transfer, direct debit, online, and by post. Processing times and payment references explained.
Comprehensive CT600 box-by-box guide for 2025/26. What goes in each box, common mistakes, and worked examples for every section of the Corporation Tax return.
Everything a new limited company director needs to know about filing a company tax return (CT600) with HMRC. From registration to submission, step by step.
The small profits rate, marginal relief band, and how to check which rate applies to your company. Updated for the 2025/26 tax year.
When to pay Corporation Tax, how to pay HMRC, payment reference numbers, and the consequences of late payment. Complete guide for limited companies.
Understanding the CT600 tax calculation boxes — Corporation Tax rates, marginal relief, tax payable, and payments on account. Every box explained.
How employer NI contributions affect your Corporation Tax bill. What's deductible, Employment Allowance, and reporting on your CT600.
What happens to your Corporation Tax obligations when closing a limited company. Final CT600 filing, strike-off timing, and common mistakes to avoid.
Complete guide to HMRC penalties for Corporation Tax — late filing (£100 to £1,500+), late payment interest, and inaccuracy penalties. How to avoid them.