Cost Plus Incentive Fee Contracts (CPIF). The seller is reimbursed for all allowable costs for performing the contract work and receives a predetermined incentive fee based upon achieving certain performance objectives as set forth in the contract. In CPIF contracts, if the final costs are less or greater than the original estimated costs, then both the buyer and seller share costs from the departures based upon a prenegotiated cost sharing formula, e.g.,an 80/20 splitoverlunder target costs based on the actual performance of the seller.