Fixed Firm Price(FFP): As long as scope of work doesn't change the price of contact is fixed Fixed Price Incentive Fee(FPIF): If a performance objective benefits the buyer, the seller is given an incentive, like a bonus Eg: If the construction of a house is completed a month ahead of planned schedule, the contractor is given a bonus Fixed Price with Economic Price Adjustments(FPEPA):Fixed price contracts combined with a pay rate adjustment based on changes in economic conditions like cost of labor and material, fluctuation in currency rate conversion, inflation Eg: Airline ticket prices change as per the petroleum prices