Expenditure allocation for exempt income now aggregates direct costs plus a fixed percentage of average investment value, capped by claimed expenditure. Expenditure related to income not forming part of total income is the aggregate of (i) expenditure directly relating to that income and (ii) an amount equal to a fixed percentage of the annual average of the monthly averages of the opening and closing balances of the value of investments yielding such income, provided the aggregate does not exceed the total expenditure claimed by the assessee.