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

109 results for “how to”Clear search
21 February 2026

Corporation Tax Group Relief: How to Share Losses Between Companies

How to use corporation tax group relief to share losses between companies. 75% ownership test, consortium relief, and filing.

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21 February 2026

Corporation Tax Refund: How to Claim Back Overpaid Tax from HMRC

How to claim a corporation tax refund from HMRC. Covers overpayment, amended returns, loss carry-back, and how long refunds take.

corporation taxHMRCrefundoverpaymentCT600
21 February 2026

CT600 Supplementary Pages Explained: Which Ones Does Your Company Need?

CT600 supplementary pages explained: CT600A to CT600E. Find out which ones your company needs and how to complete them.

ct600supplementary pagesct600act600bct600chmrccorporation tax
21 February 2026

HMRC Enquiry Into Your CT600: What to Expect and How to Respond

Received an HMRC enquiry about your CT600? What triggers enquiries, your rights, what HMRC can ask, and how to respond.

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21 February 2026

Can't Pay Your Corporation Tax? How to Set Up an HMRC Payment Plan

Can't afford your corporation tax bill? Learn how to set up an HMRC Time to Pay arrangement and avoid penalties.

corporation taxpayment plantime to payhmrcct600cash flowttp
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

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

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.

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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

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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