Disclaimer

This tool is for general guidance only. It does not replace official deadlines, Companies House records, HMRC guidance, or professional advice. Always confirm your own dates and figures with the official sources.

⚠️Independent penalty estimate

Companies House & HMRC Late Filing Penalty Calculator

Estimate the late filing penalties Companies House and HMRC charge for late accounts and CT600 returns, using their published scales.

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⚡Autofill via UK Company Number (Live API)

Company Legal Structure

Annual Accounts Overdue Duration

Late in two consecutive financial years: Companies House automatically doubles the statutory penalty if accounts were filed late in two successive years.

Statutory filing deadline for the CT600 return

Normally 12 months after the end of the accounting period. Needed for the HMRC figure: returns due before 1 April 2026 use the older £100/£200 scale, later ones the current £200/£400 scale.

HMRC CT600 Tax Return Status

Third or successive late CT600: HMRC raises the flat-rate penalty to £1,000 or £2,000 where returns for three or more consecutive accounting periods are late and the company was liable to penalties for the first two.

Estimated penalties

£0

An estimate from the published scales and the options above, not an assessed penalty.

Based on the scenario you entered.

Companies House Penalty:£0

HMRC Tax Return Penalties:£0

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⚖️Can you appeal a Companies House penalty?

Appeals are only accepted for exceptional unforeseen circumstances (e.g. serious illness, fire, disaster). Director absence or previous accountant failure are not accepted grounds.

🛡️How Fileminder's accountants protect you:

Our ACCA-qualified team prepares catch-up accounts, files CT600 tax returns, and submits formal stay-of-strike-off notices to safeguard company assets.