all eway bill amount will be taken from the bill amount and 18%is common for all trading and industries of iron and kilometer i mean distance will be calculated by distance from your place to the destination
There is no Distance Relaxation In eway bill , it was earlier that upto 10 km u can send your material to Transporter place by Generating A part for further delivery but it increased to 50 km by noti.12/2018.
Distance clause is 50 kms now for intra state only but not applicable in inter state.
So There is no such rexlation of distance in Eway bill , if consignment value exceed to 1 lakh move by Motorised conveyance , eway is mandatory.