22. Computation of aggregate average advances for purposes of section 31(1) [Table: Sl. No.1] for deduction for provision of bad and doubtful debt.–
(1) For the purposes of section 31(1)[Table: Sl. No. 1], the aggregate average advances made by the rural branches of a scheduled bank shall be determined as follows:–
a. the amounts of advances made by each rural branch as outstanding at the end of the last day of each month comprised in the tax year shall be aggregated separately;
b. the sum so arrived at in the case of each such branch shall be divided by the number of months for which the outstanding advances have been taken into account for the purposes of clause (a); and
c. the aggregate of the sums so arrived at in respect of each of the rural branches shall be the aggregate average advances made by the rural branches of the scheduled bank.
(2) In this rule the expressions, "rural branch" and "scheduled bank" shall have the meanings respectively assigned to them in sections 66(26) and 2(98).