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

177 results for “corporation tax”Clear search
21 February 2026

Working from Home Tax Relief for Limited Companies: What You Can Claim

How to claim work-from-home expenses through your limited company. Flat rate method, actual costs, and allowable expenses.

corporation taxworking from homeallowable expenseslimited companytax relief
21 February 2026

Corporation Tax Interest: Late Payment Rates, Repayment Interest & How to Avoid Charges

HMRC charges interest on late corporation tax at base rate + 2.5%. Learn current rates, how interest is calculated, and how to avoid it.

corporation taxinterestlate paymenthmrcrepayment interestct600penalties
21 February 2026

Free CT600 Filing Software: What Are Your Options in 2026?

Free CT600 filing software compared. What happens when HMRC stops free filing in March 2026 and what to use instead.

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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.

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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

Do I Need to File a CT600? When Your Company Must Submit a Tax Return

Find out whether your limited company needs to file a CT600 Corporation Tax return with HMRC. Covers dormant companies, new companies, losses, and exemptions.

CT600corporation taxHMRClimited companyfiling requirements
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

Company Cars & Corporation Tax: Capital Allowances, BIK, and CT600 Treatment

How company cars affect corporation tax. Capital allowances for cars, benefit in kind rules, and CT600 treatment.

corporation taxcompany carbenefit in kindcapital allowancesct600electric vehiclelease
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
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