In addition, Airtel recognised 67.1 billion rupees as exceptional tax charge arising from reassessment of the carrying amounts of deferred tax balances.
Besides its 31.9% share in Airtel, Singtel owns significant stakes in other regional mobile operators including Telkomsel, AIS and Globe.
The telco will report its own quarterly earnings next month.
As at 10.53am, Singtel shares dropped one cent to trade at $2.49.
