90.—(1) For the purposes of paragraph 6(1) of Schedule 1 to the Act (conditions of entitlement to an income-related allowance), the income of a claimant is to be calculated on a weekly basis—
(a)by determining in accordance with this Part, other than Chapter 7, the weekly amount of the claimant's income; and
(b)by adding to that amount the weekly income calculated under regulation 118 (calculation of tariff income from capital).
(2) For the purposes of paragraph (1) “income” includes capital treated as income under regulation 105 (capital treated as income) and income which a claimant is treated as possessing under regulations 106 to 109 (notional income).
(3) For the purposes of paragraph 10 of Schedule 2 to the Act (effect of work), the income which consists of earnings of a claimant is to be calculated on a weekly basis by determining the weekly amount of those earnings in accordance with regulations 91(2), 92 to 99 and 108(3) and (4) and Schedule 7.
(4) For the purposes of paragraph (3), “income which consists of earnings” includes income which a claimant is treated as possessing under regulation 108(3) and (4).
(5) For the purposes of pension payments, PPF periodic payments and a councillor's allowance to which section 3 of the Act applies, the income other than earnings of a claimant is to be calculated on a weekly basis by determining in accordance with regulation 94(1), (2), (5) and (6) the weekly amount of the pension payments, PPF periodic payment or a councillor's allowance paid to the claimant.