C form

Form-C is meant for getting Reduced Tax Rate benefit on interstate purchases between registered dealers to promote business with conditions like the material purchased must be used in manufacturing or Resale or Minining or used in generation of power.  this can seen in your Form-B CST Registration certificate( u cant give it as gift, samples etc) .  In case of manual Form-C u need to collect from ST Dept by paying a small value but nowadays almost in all the state its made online so no need to pay any amount and you have to follow the method adopted in each state to generate online Form-C