{
  "url": "https://openlegislation.uk/corporation-tax-act-2010/section-393",
  "json_url": "https://openlegislation.uk/corporation-tax-act-2010/section-393.json",
  "legislation": "ukpga/2010/4",
  "legislation_title": "Corporation Tax Act 2010",
  "legislation_url": "https://openlegislation.uk/corporation-tax-act-2010",
  "path": "section/393",
  "kind": "section",
  "number": "393",
  "heading": "Qualifying 75% subsidiaries",
  "text": "(1) A company (“B”) is a principal company of A if—\n(a) A is a qualifying 75% subsidiary of B, and\n(b) B is not a qualifying 75% subsidiary of another company.\n(2) There is a relevant change in the relationship between A and B (as a principal company) on any day if A ceases to be a qualifying 75% subsidiary of B on that day.\n(3) A company (“C”) is a principal company of A if—\n(a) A is a qualifying 75% subsidiary of B,\n(b) B is a qualifying 75% subsidiary of C, and\n(c) C is not a qualifying 75% subsidiary of another company.\n(4) There is a relevant change in the relationship between A and C (as a principal company) on any day if—\n(a) A ceases to be a qualifying 75% subsidiary of B on that day, or\n(b) B ceases to be a qualifying 75% subsidiary of C on that day.\n(5) If C is a qualifying 75% subsidiary of another company (“D”), D is a principal company of A unless D is a qualifying 75% subsidiary of another company, and so on.\n(6) Accordingly, there is a relevant change in the relationship between A and a principal company of A on any day if—\n(a) in determining which company is a principal company, regard is had to any company which is a qualifying 75% subsidiary of another, and\n(b) that company ceases to be a qualifying 75% subsidiary of the other on that day.\n(7) This section is supplemented by section 398 (“qualifying 75% ... subsidiary” etc).",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in s. 393(7) omitted (with effect in accordance with s. 29(8) of the amending Act) by virtue of Finance Act 2010 (c. 13), s. 29(2)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/2010/4/section/393",
    "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."
}