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

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21 February 2026

Corporation Tax Relief on Charity Donations

How to claim corporation tax relief on charitable donations. Covers qualifying payments, Gift Aid, non-cash gifts, and how to report donations on your CT600.

charity donationscorporation tax reliefct600gift aidqualifying donationslimited companyhmrc
21 February 2026

Flat Rate VAT Scheme & Corporation Tax

How the Flat Rate VAT Scheme affects your corporation tax. Learn about the VAT surplus, how to report it on your CT600, and whether the scheme still saves money.

flat rate vatvat schemecorporation taxct600vat surpluslimited companyhmrc
21 February 2026

HMRC Penalties for Late Corporation Tax Filing

What are the penalties for filing your CT600 late? Understand HMRC penalty rates, interest charges, and how to avoid or appeal late filing penalties.

hmrc penaltieslate filingcorporation taxct600interest chargesappeallimited company
21 February 2026

CT600 Filing Agent Authorisation with HMRC

How to authorise an agent to file your CT600. Step-by-step guide to HMRC agent authorisation for corporation tax — online, by post, and what to do if things go wrong.

ct600hmrcagent authorisationcorporation taxfiling agentaccountantgovernment gateway
21 February 2026

UK Corporation Tax Rates: Complete History

Complete history of UK corporation tax rates from 1965 to 2026. See how rates have changed, key reforms, and what current rates mean for your limited company.

corporation taxtax ratesuk tax historyct600limited companyhmrcmarginal relief
21 February 2026

HMRC CT600 Online vs Software: Which Is Better?

Compare filing your CT600 through HMRC online vs commercial software. Learn the pros, cons, costs, and which option saves you time and money in 2026.

ct600hmrcfiling softwarecorporation taxonline filingtaxpipelimited company
21 February 2026

Corporation Tax Marginal Relief Explained

How does marginal relief work for UK corporation tax? Plain-English explanation of the 19%-25% band, the formula, worked examples, and how to claim on your CT600.

corporation taxmarginal reliefct600tax ratessmall profits ratelimited companyhmrc
21 February 2026

HMRC Corporation Tax Refund: How Long?

How long does an HMRC corporation tax refund take? Typical timescales, what causes delays, how to chase a late repayment, and tips to get your refund faster.

corporation taxHMRCrefundrepaymentCT600overpaymentprocessing time
21 February 2026

Limited Company Expenses You Can Claim

Complete guide to allowable limited company expenses for Corporation Tax. Covers office costs, travel, staff, professional fees, and what HMRC disallows.

corporation-taxexpenseslimited-companyallowable-expensesct600
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
21 February 2026

Company Tax Return (CT600) vs Annual Accounts: What's the Difference?

CT600 vs annual accounts: one goes to HMRC, one to Companies House. What each is, when they are due, and how they relate.

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21 February 2026

How to Appeal a CT600 Late Filing Penalty from HMRC

Got a CT600 late filing penalty? You may be able to appeal. Step-by-step guide to HMRC penalty appeals, reasonable excuses, and time limits.

ct600penaltyappealhmrclate filingreasonable excusecorporation tax
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