Bharti Airtel has prepaid Rs 8,325 crore to the Department of Telecom (DoT) as part of the deferred liabilities related to the spectrum acquired in the 2015 auction. The telecom company won spectrum worth Rs 29,129.08 crore in the March 2015 auctions and had paid Rs 11,374.7 crore upfront. The recent payment is a partial prepayment of the deferred liabilities, which were carrying an interest cost of 10%. The move comes as Airtel continues to make adjustments and payments related to spectrum acquisition and regulatory compliance.