RBA surpluses
(1) If an RBA surplus is allocated or applied under this Division, the Commissioner must reduce by the same amount excess non - RBA credits that relate to the RBA.
Excess non - RBA credits
(2) If, under this Division, an excess non - RBA credit that relates to an RBA (the related RBA ) is:
(a) allocated to an RBA; or
(b) applied against a non - RBA tax debt;
the related RBA is adjusted in the Commissioner's favour by the same amount.