CT600 Box by Box — The Most Important Boxes Explained
The CT600 has over 200 boxes but most companies only use a fraction. Here are the key boxes you need to know, what goes in each one, and common mistakes to avoid.
Plain-English guides to UK Corporation Tax and CT600 filing.
The CT600 has over 200 boxes but most companies only use a fraction. Here are the key boxes you need to know, what goes in each one, and common mistakes to avoid.
How to claim capital allowances on your CT600 for equipment, vehicles, and machinery. Covers AIA, writing down allowances, full expensing, and which CT600 boxes to use.
The CT600 has 200+ boxes but most companies only need about 30. Here's exactly which boxes matter for your company type — micro-entity, small, or dormant.
Complete guide to claiming capital allowances on your CT600. Covers Annual Investment Allowance (AIA), full expensing, writing down allowances, and which boxes to fill in.
Plain English explanation of every CT600 box that matters for a typical small limited company. No jargon, no confusion.
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.
Understanding the CT600 tax calculation boxes — Corporation Tax rates, marginal relief, tax payable, and payments on account. Every box explained.
Detailed guide to every box in the CT600 income section. What goes where — turnover, trading profits, property income, chargeable gains, and total profits.
How limited companies report capital gains on the CT600, including indexation allowance, the substantial shareholding exemption, and which boxes to complete.
Complete guide to claiming capital allowances on your CT600. Covers Annual Investment Allowance (AIA), writing down allowances, first-year allowances, full expensing, and which CT600 boxes to fill in.
A plain English guide to the CT600 boxes that matter for small companies. Learn which boxes to fill in, which to skip, and how to avoid common mistakes.
Complete walkthrough of every CT600 box from 1 to 620. Plain English explanations, what to enter, and which boxes most small companies actually use.