Current account registers $2.9 bln gap in June
The June figure widened by $2.8 billion from the same month last year, data showed.
The country's 12-month rolling deficit totaled at $11.1 billion, the bank said.
An Anadolu Agency survey on Aug. 12 showed that economists had estimated the current account balance to post a $3 billion deficit in the month.
The forecasts of a panel of 12 economists ranged between $2.3 billion and $5.1 billion.
The survey also found Turkey's current account balance is projected to post an $18 billion deficit in 2020.