To carry out the task, the regulator has signed an agreement with Dhaka-based leading Chartered accountancy firm Masih Muhith Haque & Co. on Tuesday.
BTRC Chairman Shyam Sundar Sikder and other senior officials of Muhith Haque & Co. were present at the signing ceremony.
The audit firm will verify whether Banglalink is following the BTRC guidelines properly and whether the government has evaded revenue.
In a post on Facebook, BTRC said that the audit activities of mobile operator Banglalink Digital Communication Limited are going to start very soon.
Earlier, the BTRC said the audit firm had been hired at a cost of Tk8,77,75000.