HMRC warns taxpayers to settle tax on share sale


Taxpayers are cautioned to address any outstanding tax liabilities related to capital gains on share sales that were omitted from self-assessment tax returns. Failure to settle these liabilities promptly may result in HM Revenue & Customs (HMRC) initiating enquiries into taxpayers’ affairs.

Letter Campaign

HMRC has conducted extensive analysis of tax returns, identifying individuals who have failed to pay capital gains tax on share disposals. Those identified are given a 60-day window to respond to HMRC’s latest letter campaign, outlining the necessary steps to rectify the situation.

Response Deadline and Enquiry Risk

Failure to respond within the stipulated deadline prompts HMRC to open enquiries into the taxpayer’s affairs. Even if taxpayers believe they do not owe any tax, they are required to provide a written explanation to HMRC clarifying the reasons for the absence of taxable gains.

Communication Method and Advice

HMRC specifies that responses must be submitted via traditional mail, necessitating proof of posting through the Post Office and retention of all correspondence copies. Additionally, taxpayers are advised to seek professional advice if they do not already engage with accountants or tax agents.

HMRC’s Notification

HMRC’s correspondence informs taxpayers of their share disposals and potential capital gains tax liabilities arising from such transactions. Taxpayers are reminded of their obligation to pay capital gains tax if their total chargeable gains exceed the annual exempt amount for the relevant tax year.

Annual Exempt Amount and Reductions

The annual exempt amount for capital gains tax has been subject to reductions, decreasing from £12,300 for tax years 2020-21 to 2022-23, to £6,000 for 2023-24, and further to £3,000 for 2024-25. Trustees are subject to a halved annual exempt amount compared to individuals and personal representatives.

Compliance and Penalties

Taxpayers are urged to amend their tax returns within 60 days of receiving the HMRC letter to avoid potential enquiries. Failure to comply may result in penalties being imposed, particularly if HMRC identifies discrepancies during future compliance checks.


Taxpayers are encouraged to proactively address any outstanding tax liabilities related to share disposals, ensuring compliance with HMRC regulations and avoiding penalties. Timely response and accurate disclosure are paramount to mitigate the risk of potential tax enquiries and penalties imposed by HMRC.

HMRC warns taxpayers to settle tax on Share sale

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