Written Question·Treasury·UIN 13918
Revenue and Customs: Artificial Intelligence
Tabled: 29 June 2026
Answered: 7 July 2026
Question
Daisy Cooper
Liberal Democrat — St Albans
To ask the Chancellor of the Exchequer, what assessment she has made of the extent of the use of Large Language Models in providing inaccurate advice to HMRC customers relating to (a) self-assessment and (b) corporation tax returns.
Answer
Dan TomlinsonThe Government is committed to helping taxpayers get their tax right. While the use of external Large Language Models can be helpful, they may not always provide accurate tax advice and HMRC has no control over the way these models are trained. HMRC there...
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