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myAccount or ROS / full guide
If you made a disposal and do not file Form 11, report the gain on Form CG1 by 31 October of the following year. Pay the CGT itself earlier: by 15 December for disposals from 1 January to 30 November, or by 31 January for December disposals. You must file even if no tax is due because of the annual exemption or losses.
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Written by PAYEWise editorial team, plain-English tax writers working from Revenue sources. Tax review: pending appointment of a named tax-qualified reviewer. Reviewed 28 October 2026.
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Last reviewed 2026-10-28 (awaiting sign-off by a named tax-qualified reviewer). Every factual tax rule on this page is backed by a dated Revenue source. Spotted an error? Use the contact page.
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