Section 391 | Relevant company's income for condition B in section 387

(1)This section applies for the purposes of condition B in section 387.

(2)The reference to the relevant company's income is to its income as calculated for corporation tax purposes.

(3)Any apportionment necessary to determine the amount of the relevant company's income attributable to the period of 12 months ending with the relevant day is to be made on a time basis.

(4)But—

(a)that basis does not apply if it would work in an unjust or unreasonable way in relation to any person, and

(b)in that case the apportionment is to be made instead on a just and reasonable basis.

(5)The proportion of the income that derives from plant or machinery falling within section 387(7) is to be determined on a just and reasonable basis.