2(1)Section 59A of the Taxes Management Act 1970 (payments on account of income tax) shall be amended in accordance with the following provisions of this paragraph.U.K.
(2)In subsection (2) (requirement to make payments on account and determination, subject to subsections (4) and (4A), of the amount of such payments) for “(4) and (4A)” there shall be substituted “ (4) to (4B) ”.
(3)In subsection (4A) (determination, subject to subsections (3) and (4), of amount of payments on account in the case of late or amended assessments), after “subsections (3) and (4) above” there shall be inserted “ and subsection (4B) below ”.
(4)After subsection (4A) there shall be inserted—
“(4B)If as regards the year immediately preceding the year of assessment the taxpayer is assessed to income tax under section 29 of this Act in any amount, then, subject to subsections (3) and (4) above and to any subsequent application of this subsection, the amount of each payment on account shall be, and shall be deemed always to have been, the total of—
(a)the amount which, immediately before the making of the assessment under section 29, is the amount of that payment, and
(b)an amount equal to 50 per cent. of the amount in which he is assessed under that assessment;
and if that assessment is varied, the amount in which he is assessed under it shall be taken for the purposes of paragraph (b) above to be the amount of the assessment as varied.”
(5)In subsection (5) (adjustments to be made where subsection (4A) applies) after “subsection (4A)” there shall be inserted “ or (4B) ”.