(1) If:
(a) the GST payable by you on a * taxable supply, or the input tax credit to which you are entitled for a * creditable acquisition, was attributable to a tax period during which you were not * accounting on a cash basis; and
(b) at a time when you are accounting on a cash basis, the whole or part of a debt relating to the * consideration for the supply or acquisition is written off as bad;
the amount written off, and any part of that amount that is recovered, is to be treated, for the purposes of Division 21, as if at all relevant times you were not accounting on a cash basis.
(2) This section has effect despite subsections 21 - 5(2) and 21 - 15(2) (which preclude adjustments for bad debts when accounting on a cash basis).