The State of Michigan announced a change in the prepaid gasoline sales tax rate. Effective May 1, 2006, the new rate will be 12.7 cents per gallon. The Department is required to establish a new rate every six months unless the change in the price of a gallon of gasoline has been less than 10% during the prior six months. This rate is used by a purchaser (or receiver) of gasoline to calculate its required sales tax prepayment responsibility at the time of purchase or shipment from a refiner, pipeline terminal operator, or marine terminal operator. (Michigan Department of Treasury, Revenue Bulletin 2006-2, February 28, 2006)