9.—(1) This paragraph applies if the whole or part of an amount to which this paragraph applies is not paid by the end of the period of one month beginning with the due date.
(2) This paragraph applies to any amount payable by way of a pension, lump sum, refund of contributions under the scheme (other than any amount due under regulations 32 to 34) or interim award.
(3) The scheme manager must pay interest on the unpaid amount to the person to whom it should have been paid unless the scheme manager is satisfied that the unpaid amount was not paid on the due date because of some act or omission on the part of the member or other person to whom it should have been paid.
(4) The interest on the unpaid amount is calculated at the base rate on a day to day basis from the due date for the amount to the date of its payment and compounded with three-monthly rests.
(5) For the purposes of this regulation, except where sub-paragraph (6) applies, “due date”, in relation to an unpaid amount, means—
(a)in the case of an amount in respect of a pension or lump sum payable to a member under Part 5, the day immediately following that of the member’s retirement from pensionable employment;
(b)in the case of an amount in respect of a pension payable on a member’s death, the day after the date of death;
(c)in the case of an amount in respect of a lump sum under regulation 111 that is payable to the member’s executors, the earlier of—
(i)the date on which confirmation was produced to the scheme manager; and
(ii)the date on which the scheme manager was satisfied that the lump sum may be paid as provided in regulation 111,
(d)in the case of an amount in respect of any other lump sum under Part 6 the day after the date of the member’s death; and
(e)in the case of an amount in respect of a refund of contributions, the day after that on which the scheme manager received from Her Majesty’s Commissioners of Revenue and Customs the information required for the purposes of calculating the amount to be subtracted under regulation 40(2).
(6) If, on the date which, in accordance with sub-paragraph (5), would have been the due date for an unpaid amount in respect of a pension, lump sum or refund of contributions, the scheme manager was not in possession of all the information necessary for the calculation of the amount payable in respect of the pension, lump sum or refund, the due date for the unpaid amount is the first day on which the scheme manager was in possession of that information.
(7) In this paragraph, “interim award” means—
(a)any amount paid by way of an interim payment calculated by reference to an expected benefit under this scheme pending final calculation of the full value of that benefit; and
(b)any amount paid that increases the amount of an earlier payment due to a backdated or subsequent increase in pensionable pay.