4(1)For any taxable period the chargeable amount in relation to the relevant land is the appropriate rental value (as determined under sub-paragraph (2)), less the amount of any payments which, in pursuance of any legal obligation, are made by the chargeable person during the period to the owner of the relevant land in respect of the occupation of the land by the chargeable person.U.K.
(2)The appropriate rental value is—
where—
R is the rental value of the relevant land for the taxable period,
DV is—
(a) in a case falling within paragraph 3(2)(a)(i), the value as at the valuation date of the interest in the relevant land that was disposed of as mentioned in paragraph 3(2)(b) by the chargeable person or, where the disposal was a non-exempt sale, the appropriate proportion of that value,
(b) in a case falling within paragraph 3(2)(a)(ii), such part of the value of the relevant land at the valuation date as can reasonably be attributed to the property originally disposed of by the chargeable person or, where the original disposal was a non-exempt sale, to the appropriate proportion of that property, and
(c) in a case falling within paragraph 3(3), such part of the value of the relevant land at the valuation date as can reasonably be attributed to the consideration provided by the chargeable person, and
V is the value of the relevant land at the valuation date.
(3)The “rental value”of the land for the taxable period is the rent which would have been payable for the period if the property had been let to the chargeable person at an annual rent equal to the annual value.
(4)The disposal by the chargeable person of an interest in land is a “non-exempt sale”if (although not an excluded transaction) it was a sale of his whole interest in the property for a consideration paid in money in sterling or any other currency; and, in relation to a non-exempt sale, “the appropriate proportion” is—
where—
MV is the value of the interest in land at the time of the sale;
P is the amount paid.
(5)Regulations may—
(a)in relation to any valuation date, provide for a valuation of the relevant land or any interest in the relevant land by reference to an earlier valuation date to apply subject to any prescribed adjustments, and
(b)in relation to any year of assessment, provide for a determination of the rental value of the land by reference to any earlier year of assessment to apply subject to any prescribed adjustments.
(6)In this paragraph—
“the taxable period” means the year of assessment, or part of a year of assessment, during which paragraph 3 applies to the chargeable person;
“the valuation date”, in relation to a taxable period, means such date as may be prescribed.