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

127 results for “Corporation Tax”Clear search
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.

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21 February 2026

Corporation Tax for Startups: The Complete Guide for New Limited Companies

Corporation tax for startups. Registration, deadlines, expenses, R&D relief, first CT600 filing, and mistakes to avoid.

corporation taxstartuplimited companyCT600new business
21 February 2026

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

HMRC cancelled Making Tax Digital for Corporation Tax in July 2025. Here's what happened, what it means for your company, and what filing changes do affect you now.

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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

Just Incorporated? Your First CT600 Timeline: Key Dates You Can't Miss

New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.

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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

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.

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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.

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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.

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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.

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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
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