{
  "url": "https://openlegislation.uk/corporation-tax-act-2010/section-40",
  "json_url": "https://openlegislation.uk/corporation-tax-act-2010/section-40.json",
  "legislation": "ukpga/2010/4",
  "legislation_title": "Corporation Tax Act 2010",
  "legislation_url": "https://openlegislation.uk/corporation-tax-act-2010",
  "path": "section/40",
  "kind": "section",
  "number": "40",
  "heading": "Ring fence trades: extension of periods for which relief may be given",
  "text": "(1) This section applies if—\n(a) in an accounting period a company makes a loss in a ring fence trade (as defined in section 162 of CAA 2001),\n(b) the accounting period is an accounting period for which any allowances under section 164 or by virtue of section 416ZA of CAA 2001 are made to the company in respect of decommissioning expenditure, and\n(c) not all the loss is a terminal loss (see section 39(3) above).\n(2) Sections 37(3)(b) and 38(1) and (3) have effect in relation to the loss (so far as it is not a terminal loss) as if the references to 12 months were references to 3 years.\n(3) But if the loss exceeds the sum of the allowances mentioned in subsection (1)(b), subsection (2) applies in relation to the loss only so far as it does not exceed that amount.\n(3A) In this section “decommissioning expenditure” has the meaning given by section 330C.\n(4) This section is subject to section 41.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in s. 40(1)(b) substituted (with effect in accordance with Sch. 21 para. 6 of the amending Act) by Finance Act 2012 (c. 14), Sch. 21 para. 5(2)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in s. 40(1)(b) substituted (with effect in accordance with s. 92(10) of the amending Act) by Finance Act 2013 (c. 29), s. 92(8)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in s. 40(3) substituted (with effect in accordance with Sch. 21 para. 6 of the amending Act) by Finance Act 2012 (c. 14), Sch. 21 para. 5(3)(a)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Words in s. 40(3) substituted (with effect in accordance with Sch. 21 para. 6 of the amending Act) by Finance Act 2012 (c. 14), Sch. 21 para. 5(3)(b)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "S. 40(3A) inserted (with effect in accordance with Sch. 21 para. 6 of the amending Act) by Finance Act 2012 (c. 14), Sch. 21 para. 5(4)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/2010/4/section/40",
    "retrieved_at": "2026-10-29T09:10:29.433154+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}