Corporation Tax Interest: Late Payment Rates, Repayment Interest & How to Avoid Charges
HMRC charges interest on late corporation tax at base rate + 4% — currently 7.75%. Learn current rates, how interest is calculated, and how to avoid it.
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Plain-English guides to UK Corporation Tax and CT600 filing.
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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.
HMRC Free CT600 Filing Ends March 2026: Your 5 Best Alternatives
HMRC free CT600 filing ends 31 March 2026. Compare the best alternatives by price, features, and ease of use.
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.
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.
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.
Director's Loan Account: Tax Implications
Complete guide to director's loan account tax implications. Covers overdrawn DLAs, S455 tax, bed and breakfasting rules, and how to stay compliant with HMRC.
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 Tax Penalties & Interest Charges
Understand HMRC corporation tax penalties for late filing and payment, how interest is calculated, and how to appeal. Complete guide for UK company directors.
CT600 Box by Box Guide: Every Section Explained in Plain English
A complete walkthrough of every CT600 box and section. Understand what each field means, which boxes apply to your company, and how to fill them in correctly.
How to Reduce Corporation Tax Legally: 12 Strategies for UK Companies
Discover 12 legal ways to reduce your corporation tax bill. From capital allowances to pension contributions, learn how to minimise what your company pays HMRC.
Corporation Tax Payment Reference — How to Pay HMRC Correctly
How to find and use your Corporation Tax payment reference, HMRC bank details, payment methods, and what to do if you use the wrong reference.