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

20 results for “step-by-step guide”Clear search
23 February 2026

How to File CT600 Online After HMRC Free Service Closes

Step-by-step guide to filing your CT600 corporation tax return online using commercial software after HMRC discontinues its free filing service in March 2026.

ct600hmrcfilingguidecorporation-tax
23 February 2026

HMRC Government Gateway for Corporation Tax: Setup & Navigation Guide

Step-by-step guide to setting up and using HMRC Government Gateway for Corporation Tax. How to register, enrol for CT, view your account, and manage your tax.

hmrcgovernment-gatewaycorporation-taxguide
23 February 2026

Dormant Company Accounts & CT600: Filing Guide for Companies That Aren't Trading

How to file dormant company accounts with Companies House and a nil CT600 with HMRC. Step-by-step guide with deadlines and requirements.

ct600dormantcompanies-housecorporation-tax
23 February 2026

File CT600 After HMRC Free Service Closes (2026)

HMRC's free CT600 service closes March 2026. Step-by-step guide to filing your corporation tax return from April 2026 using commercial software.

CT600corporation taxHMRCfiling guideApril 2026step by step
23 February 2026

Filing Your First CT600: A Step-by-Step Guide for New Companies

Just incorporated a UK limited company? Here's everything you need to know about filing your first CT600 Corporation Tax return — from registering with HMRC to submitting your return.

CT600new companyfirst returncorporation taxHMRCguidelimited company
22 February 2026

Filing CT600 Without an Accountant: Is It Safe? A Step-by-Step Guide

Can you safely file your CT600 without an accountant? Yes for simple companies. When DIY filing is safe, when to get help, and how to do it step by step.

ct600diy filingno accountantcorporation taxstep by step
22 February 2026

CT600 Filing for First-Time Directors: Complete Beginner's Guide

Never filed a CT600 before? This step-by-step guide explains everything first-time directors need to know — deadlines, documents, iXBRL, and how to file for £59.

CT600first-time directorbeginner guidecorporation taxnew company
22 February 2026

How to File CT600 Online in 2026: Complete Step-by-Step Guide

HMRC's free filing service closes March 2026. Here's exactly how to file your CT600 corporation tax return online in 2026 — step by step, with tips and common mistakes to avoid.

CT600file onlineHMRCcorporation tax2026step-by-step guide
22 February 2026

How to Pay Corporation Tax: Complete HMRC Payment Guide 2025/26

Step-by-step guide to paying your corporation tax bill. Covers all payment methods, deadlines, payment references, and what happens if you pay late.

corporation taxHMRC paymentpayment referenceCT600tax deadline
22 February 2026

HMRC Free Filing Is Ending: What to Use Instead

HMRC's free CT600 filing service closes March 2026. Step-by-step guide to choosing a replacement and filing your Corporation Tax return.

hmrcct600free-filingreplacement2026
21 February 2026

How to Use HMRC Government Gateway to File Your CT600

Step-by-step guide to setting up and using your HMRC Government Gateway account to file your CT600 Corporation Tax Return online.

ct600hmrcgovernment-gatewaycorporation-taxfiling
21 February 2026

Company Formation & Corporation Tax Registration

Step-by-step guide to registering for Corporation Tax after forming a limited company. Covers CT41G, UTR numbers, deadlines, and first CT600 filing.

corporation-taxcompany-formationregistrationct600hmrcnew-company
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