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

21 February 2026

How Long Does HMRC Take to Process a CT600? Processing Times Explained

Find out how long HMRC takes to process your CT600 company tax return, when you'll get your tax calculation, and what to do if it's taking too long.

ct600hmrcprocessing timecorporation taxfilingtax return
21 February 2026

Making Tax Digital for Corporation Tax: What Your Company Needs to Know

Making Tax Digital is coming for corporation tax. Learn what changes to expect, likely timelines, and how to prepare your company.

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21 February 2026

Corporation Tax on Cryptocurrency: How to Report Bitcoin & Crypto on Your CT600

How UK companies pay corporation tax on crypto. Buying, selling, mining, staking, DeFi, and NFTs — what goes on your CT600.

corporation taxcryptocurrencybitcoinct600hmrccrypto taxcapital gainstrading
21 February 2026

Company Struck Off or Dissolved? You May Still Need to File a CT600

Company struck off or dissolved? You may still owe corporation tax. When a final CT600 is required and how to restore a company.

ct600dissolved companystruck offcompanies househmrccorporation taxcompany restoration
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

Non-UK Company Trading in the UK? When You Need to Pay Corporation Tax

Non-UK company with UK activities? When you must register for corporation tax, file a CT600, and what counts as a permanent establishment.

ct600non-uk companypermanent establishmentcorporation taxhmrcoverseas companyinternational tax
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
21 February 2026

iXBRL Accounts: What Are They and Why You Need Them for Your CT600

What iXBRL accounts are, why HMRC requires them with your CT600, and how to generate them without expensive software. Plain English guide for company directors.

iXBRLCT600HMRCaccountscorporation tax
21 February 2026

HMRC Corporation Tax Online Account: How to Set Up and Use It

Step-by-step guide to setting up your HMRC Corporation Tax online account. Register, activate, and manage your company tax — including how to file your CT600.

HMRCcorporation taxonline accountGovernment Gateway
21 February 2026

Corporation Tax for Freelancers: A Complete Guide for Limited Company Contractors

Corporation tax guide for freelancers with a limited company. Covers allowable expenses, IR35, dividends, and filing your CT600.

corporation taxfreelancercontractorlimited companyIR35
21 February 2026

Company Share Buyback: Tax Treatment Guide

How UK company share buybacks are taxed. Covers income vs CGT treatment, capital distribution conditions, and when to use a share buyback for your limited company.

share buybackcapital distributionCGTcorporation taxincome taxlimited companycompany purchase of own shares
21 February 2026

Corporation Tax Record Keeping Requirements

What records your UK company must keep for corporation tax. Covers retention periods, digital records, HMRC inspection powers, and penalties for poor record keeping.

corporation taxrecord keepingHMRCcompliancedigital recordslimited companyct600
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