SACM9015 | Consequential Claims after Assessment and Amendment: Non-Culpable Additions
From HM Revenue & Customs · Self Assessment Claims Manual
Throughout this manual legislative references are to the Taxes Management Act 1970 (TMA70), unless otherwise stated.
Where you
amend a return in an SA enquiry closure notice, or
make a discovery assessment for reasons other than careless or deliberate behaviour
the taxpayer can make a relevant out-of-time claim, election, application or notice within one year from the end of the year of assessment in which the notice is issued. S43A and S43C(2).
In S43A for a claim, election, application or notice to be relevant to an amendment or assessment it must
relate to the same year of assessment, or
be made or given by reference to an event in that year, see S43A(3).
The taxpayer can also
amend a claim, election, application or notice already made, or
revoke a claim, election, application or notice, except where it is irrevocable in law.
The effect of the taxpayer making, revoking or amending a claim, election, application or notice is limited to the additional liability to tax resulting from the assessment or your amendment.
So if an ITSA enquiry increases a taxpayer’s self assessment by £1,500 tax, the effect of any out-of-time claims or elections is limited to £1,500, see S43B(3)). Any 'excess' tax effect of the claim or election 'shall not be available to reduce any liability to tax'.
Specifically excluded from S43A by subsection 2A are
elections as to transfer of married couple’s allowance, see ITA07/S47-49
elections to transfer personal allowance to a spouse or civil partner, see ITA07/S55C
elections for assets to be re-based to 1982, see TCGA92/S35.
Where the taxpayer’s action would alter the liability of another person, they will need the written consent of that other person, see S43B(1).