Highlights It can be purchased online from banks It can also be bought through retailers like Amazon, Paytm New Delhi: The automatic toll plaza payment system FASTag has become mandatory from February 15. People driving vehicles that do not have the tag yet would have to pay a fee equivalent to two times the usual charge at toll plazas. The extra charge will apply to vehicles even if the tag is present but not working due to insufficient balance or any other reason. In a notification released on Sunday, the central government said that all fee lanes in toll plazas on National Highways will be able to read the tags from February 15.