THIRUVANANTHAPURAM: The State government has granted 50 per cent concession in penal interest for those availing themselves of the one-time-settlement scheme to clear building tax arrears. The government had issued guidelines for revising the tax of residential, commercial and industrial buildings, mobile phone towers, and amusement parks. But local self-government institutions had not introduced the plinth area-based tax assessment system. The scheme has been offered to clear the arrears for introducing the new tax assessment system.– Special Correspondent