48 CFR § 52.242-3 - Penalties for Unallowable Costs.
As prescribed in 42.709-6, use the following clause:
(a) Definition. Proposal, as used in this clause, means either -
(1) A final indirect cost rate proposal submitted by the Contractor after the expiration of its fiscal year which -
(ii) Will be used in negotiating the final contract price; or
(2) The final statement of costs incurred and estimated to be incurred under the Incentive Price Revision clause (if applicable), which is used to establish the final contract price.
(b) Contractors which include unallowable indirect costs in a proposal may be subject to penalties. The penalties are prescribed in 10 U.S.C. 2324 or 41 U.S.C. chapter 43, as applicable, which is implemented in section 42.709 of the Federal Acquisition Regulation (FAR).
(d) If the Contracting Officer determines that a cost submitted by the Contractor in its proposal is expressly unallowable under a cost principle in the FAR, or an executive agency supplement to the FAR, that defines the allowability of specific selected costs, the Contractor shall be assessed a penalty equal to -
(1) The amount of the disallowed cost allocated to this contract; plus
(2) Simple interest, to be computed -
(i) On the amount the Contractor was paid (whether as a progress or billing payment) in excess of the amount to which the Contractor was entitled; and
(e) If the Contracting Officer determines that a cost submitted by the Contractor in its proposal includes a cost previously determined to be unallowable for that Contractor, then the Contractor will be assessed a penalty in an amount equal to two times the amount of the disallowed cost allocated to this contract.
(g) Pursuant to the criteria in FAR 42.709-5, the Contracting Officer may waive the penalties in paragraph (d) or (e) of this clause.
(h) Payment by the Contractor of any penalty assessed under this clause does not constitute repayment to the Government of any unallowable cost which has been paid by the Government to the Contractor.