In recent months, the government has published guidance and announced policy changes that could significantly affect how tax returns are prepared and how HMRC enquiries are conducted. In this episode, we’ll explore the implications for taxpayers and agents, focusing on new HMRC guidelines for ensuring that a tax return is correct and complete and changes to the requirement to notify HMRC of an uncertain tax treatment. 

Links

ICAEW:
Taxpayers encouraged to ensure returns are correct and complete - https://www.icaew.com/insights/tax-news/2025/sep-2025/taxpayers-encouraged-to-ensure-returns-are-correct-and-complete

Individuals and trusts face new obligation under uncertain tax treatment proposals - https://www.icaew.com/insights/tax-news/2026/mar-2026/individuals-and-trusts-face-new-obligation-under-uncertain-tax-treatment-proposals

Inaccuracy and failure to notify penalties must be simplified - https://www.icaew.com/insights/tax-news/2025/jun-2025/inaccuracy-and-failure-to-notify-penalties-must-be-simplified

Suspension of penalties for a one-off tax error - https://www.icaew.com/insights/tax-news/2026/feb-2026/suspension-of-penalties-for-a-one-off-tax-error

Tax gap falls slightly as a percentage of tax liabilities - https://www.icaew.com/insights/tax-news/2025/jun-2025/tax-gap-falls-slightly-as-a-percentage-of-tax-liabilities

External: 

GOV.UK: Help ensuring documents filed with HMRC are correct and complete — GfC13 -  https://www.gov.uk/government/publications/help-ensuring-documents-filed-with-hmrc-are-correct-and-complete-gfc13

GOV.UK: Opportunities to Extend Uncertain Tax Treatment - https://www.gov.uk/government/consultations/consultation-extend-notification-of-uncertain-tax-treatment-utt-regime/opportunities-to-extend-uncertain-tax-treatment

Host: Stephen Relf, Technical Manager, Tax, ICAEW

 Guests: 

Richard Jones, Senior Technical Manager, Business Tax, ICAEW

Annis Lampard, Partner, Deloitte

Producer: Ed Adams

Episode recorded: 25 March 2026

Episode published: 7 April 2026