Paragraph 16 Amendment of return during enquiry by HMRC to prevent loss of tax
United Kingdom
(1)
This paragraph applies where an enquiry into a return is in progress in relation to any matter.
(2)
If the officer forms the opinion—
(a)
that the amount stated in the self-assessment contained in the return as the amount of tax payable is insufficient, and
(b)
that unless the self-assessment is immediately amended there is likely to be a loss of tax to the Crown,
the officer may by notice to the taxpayer amend the self-assessment to make good the deficiency so far as it relates to the matter.