2 CFR 200.324: Contract cost and price.

(a) The recipient or subrecipient must perform a cost or price analysis for every procurement transaction, including contract modifications, in excess of the simplified acquisition threshold. The method and degree of analysis conducted depend on the facts surrounding the particular procurement transaction. For example, the recipient or subrecipient should consider potential workforce impacts in their analysis if the procurement transaction will displace public sector employees. However, as a starting point, the recipient or subrecipient must make independent estimates before receiving bids or proposals.

(b) Costs or prices based on estimated costs for contracts under the Federal award are allowable only to the extent that the costs incurred or cost estimates included in negotiated prices would be allowable for the recipient or subrecipient under subpart E of this part. The recipient or subrecipient may reference its own cost principles as long as they comply with subpart E of this part.

(c) The recipient or subrecipient must not use the “cost plus a percentage of cost” and “percentage of construction costs” methods of contracting.