Updated: Change to working out the amount of the increased penalty percentage at paragraph 'Working out the reductions for the quality of disclosure'.

Factsheets are for guidance only and reflect the HM Revenue and Customs position at the time of writing.

https://www.gov.uk/government/publications/compliance-checks-penalties-if-you-dont-file-income-tax-capital-gains-tax-and-annual-tax-on-enveloped-dwellings-returns-on-time-ccfs18a