Late filing penalty calculator

Two separate clocks run against a company: Companies House fines late accounts automatically, and HMRC fines a late Corporation Tax return on top. Here's what lateness actually costs.

How many months late?The accounts were ALSO late last year (Companies House doubles the penalty)

Companies House — late accounts

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Automatic, no appeals for forgetting. Bands: £150 (<1 month), £375 (1–3), £750 (3–6), £1,500 (over 6) — doubled when late two years running.

HMRC — late Corporation Tax return

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£100 immediately, another £100 at 3 months, then tax-geared penalties at 6 and 12 months. Three late returns in a row and the flat penalties rise to £500 each.

The cheapest penalty is the one that never happens — GoTaxes tracks every deadline and reminds you at 30 and 7 days. Prepare free →