(1) This section applies if:
(a) a determination is in force on a particular day under which the claimant is entitled to be paid family tax benefit by instalment; and
(b) the Secretary has reason to believe that the claimant's address has changed since it was last known to the Secretary but the Secretary does not know the claimant's new address; and
(c) the Secretary, after taking reasonable steps, is not able to find out whether the claimant's address has changed or, if it has, what the claimant's new address is.
Consequence of section applying
(2) If this section applies, the Secretary may vary the determination so that it has the effect that the claimant is not entitled to be paid family tax benefit for any day, on which the determination was or will be in force, after the end of the last instalment period before the variation takes place.
Consequence of Secretary later becoming aware of address etc.
(3) If:
(a) under subsection (2), the Secretary varies the determination; and
(b) before the end of the income year following the one in which the variation took effect, the Secretary finds out:
(i) that the claimant's address has not changed; or
(ii) what the claimant's new address is;
the Secretary must vary the determination to undo the effect mentioned in subsection (2).