Fuel taxes are an important element of your profitability. It is very important to understand this issue so you won't end up losing money by buying fuel in the wrong states.

IFTA Website with State Fuel Tax Rates

An overview:

Before IFTA-

 

Fuel taxes were collected by individual states. Trucks had to have fuel tax permits in each state, many having to display plates on their trucks for each state. Fuel had to be purchased in each state to cover the amount owed for traveling through that state.