Carriers who purchase bulk fuel tax-paid may take credit for the fuel used on the IFTA return. Credit may be taken only for the portion of fuel used, not the total amount of tax-paid fuel in the tank. If Illinois advises a motor carrier that the state will be conducting an audit of the carrier's records, the motor carrier must be able to produce the drivers' trips and logs, the inventory and withdrawal logs, and the bulk fuel invoices.
Carriers storing bulk dyed diesel (tax-free) must place a conspicuous notice stating “Dyed Diesel Fuel, Non‑taxable Use Only” on all containers, storage tanks, or facilities used to store or distribute dyed diesel fuel.
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