the first year you get your plate, they should send you an estimated millage chart. you fill out the paperwork with estimated millage, the second year, if you didnt run in that state, you mark 0 miles for the states you didnt run in., i went round and round with Ga, and after 4 years of headaches, i called panther, and asked them how much a plate was. i saved 300 bucks per year, cause ga didnt bother to tell me i was filling out the paperwork wrong, and getting fines every year for using the estimated millage in states i didnt run in.
then you have to have a current utility bill to prove you actually live there, spouses name wont work, even with a marriage license. then you have to hop around on one foot, crow like a chicken, set the neighbors cat on fire, and praise obama. then they will be happy to tell you to go home and get one more piece of documentation.
the benifit of having your own plate, is you take it with you if you move companies. the drawback to using a company plate, they keep it, so you don't want to leave one job without having a temp from tour future employer.
when i called panther about getting my plate through them, it took 15 minuets, and she sent me a temp until the plate came in, and they mailed that to the house. I have no desire to leave panther until my truck is paid for. and then it is time to retire from trucking all together.