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Plain-English guides to UK Corporation Tax and CT600 filing.

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21 February 2026

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.

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21 February 2026

Every Corporation Tax Relief Available to UK Companies (2025/26 Complete List)

Every corporation tax relief for UK companies in 2025/26 — R&D, creative industry, patent box, capital allowances, and more.

corporation taxtax reliefallowancesr&dpatent boxcreative industriesct600hmrc
21 February 2026

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.

CT600dormant companynil returnHMRCcorporation tax
20 February 2026

CT600 Box by Box Guide: Every Section Explained in Plain English

A complete walkthrough of every CT600 box and section. Understand what each field means, which boxes apply to your company, and how to fill them in correctly.

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20 February 2026

CT600 Filing Checklist — Everything You Need Before You Start

Complete checklist of every document, figure, and detail you need to file your Corporation Tax return. Print it, tick it off, file in 15 minutes.

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19 February 2026

Directors' Loan Accounts and Your CT600 — What Every Director Needs to Know

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.

directors loanCT600section 455corporation taxoverdrawn DLA
19 February 2026

Your First Company Tax Return — A New Director's Guide to CT600 Filing

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.

ct600new companyfirst tax returncorporation taxbeginners
12 February 2026

What Records Do I Need for My Company Tax Return?

Complete checklist of records and documents needed for CT600 filing. How long to keep them, what HMRC expects, and how to organize everything.

ct600record keepingdocumentsHMRC requirements
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