The sum consists of primary tax of A$268 million, interest of A$58 million, and penalties of A$67 million and follows an amended assessment by the Commissioner of Taxation.
In its business update on Feb 15, Singtel said it has already made a A$324 million provision for this item.
“The Singtel Group remains committed to complying with its tax obligations in its operating markets, the company adds.
Singtel shares closed April 19 at $2.58, unchanged for the day and up 10.73% year to date.