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

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23 February 2026

HMRC Penalties for Corporation Tax: Late Filing, Late Payment & Errors

Complete guide to HMRC penalties for Corporation Tax — late filing (from £100 fixed, rising to £200 for deadlines from April 2026, plus up to 20% of unpaid tax), late payment interest, and inaccuracy penalties. How to avoid them.

ct600 hmrc penalties corporation-tax

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 penalties late filing corporation tax ct600 interest charges appeal limited company