32(1)Where a person is liable—
(a)to a penalty under Part V of this Schedule, or
(b)for interest under paragraph 26 or 27 above,
the Commissioners may, subject to sub-paragraph (2) below, assess the amount due by way of penalty or interest (as the case may be) and notify it to him accordingly; and the fact that any conduct giving rise to a penalty under Part V of this Schedule may have ceased before an assessment is made under this paragraph shall not affect the power of the Commissioners to make such an assessment.
(2)In the case of the penalties and interest referred to in the following paragraphs of this sub-paragraph, the assessment under this paragraph shall be of an amount due in respect of the accounting period which in the paragraph concerned is referred to as the relevant period—
(a)in the case of a penalty under paragraph 18 above relating to the evasion of tax, and in the case of interest under paragraph 27 above on an amount due by way of such a penalty, the relevant period is the accounting period for which the tax evaded was due;
(b)in the case of a penalty under paragraph 18 above relating to the obtaining of a payment under regulations under section 51(2)(c) or (d) or (f) of this Act, and in the case of interest under paragraph 27 above on an amount due by way of such a penalty, the relevant period is the accounting period in respect of which the payment was obtained;
(c)in the case of interest under paragraph 26 above, and in the case of interest under paragraph 27 above on an amount due by way of interest under paragraph 26 above, the relevant period is the accounting period in respect of which the tax was due;
(d)in the case of interest under paragraph 27 above on an amount of tax, the relevant period is the accounting period in respect of which the tax was due.
(3)In a case where the amount of any penalty or interest falls to be calculated by reference to tax which was not paid at the time it should have been and that tax cannot be readily attributed to any one or more accounting periods, it shall be treated for the purposes of this Part of this Act as tax due for such period or periods as the Commissioners may determine to the best of their judgment and notify to the person liable for the tax and penalty or interest.
(4)Where a person is assessed under this paragraph to an amount due by way of any penalty or interest falling within sub-paragraph (2) above and is also assessed under subsection (1) or (2) of section 50 of this Act for the accounting period which is the relevant period under sub-paragraph (2) above, the assessments may be combined and notified to him as one assessment, but the amount of the penalty or interest shall be separately identified in the notice.
(5)Sub-paragraph (6) below applies in the case of an amount due by way of interest under paragraph 27 above.
(6)Where this sub-paragraph applies in the case of an amount—
(a)a notice of assessment under this paragraph shall specify a date, being not later than the date of the notice, to which the amount of interest which is assessed is calculated, and
(b)if the interest continues to accrue after that date, a further assessment or further assessments may be made under this paragraph in respect of amounts which so accrue.
(7)If, within such period as may be notified by the Commissioners to the person liable for the interest under paragraph 27 above, the amount referred to in paragraph 27(2), (4), (6), (8) or (10) above (as the case may be) is paid, it shall be treated for the purposes of paragraph 27 above as paid on the date specified as mentioned in sub-paragraph (6)(a) above.
(8)Where an amount has been assessed and notified to any person under this paragraph it shall be recoverable as if it were tax due from him unless, or except to the extent that, the assessment has subsequently been withdrawn or reduced.
(9)Subsection (8) of section 50 of this Act shall apply for the purposes of this paragraph as it applies for the purposes of that section.