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FAR Clause

52.242-3

Penalties for Unallowable Costs.
View on acquisition.gov · View on eCFR.gov
Effective Date
DEC 2022
Active Deviations
Versions
3 (since 2021-08-11)
RFO
RFO Version Available

The Revolutionary FAR Overhaul has published a revised version of this clause. The RFO version supersedes the eCFR text below for contracts using the RFO model; see the RFO deviation for applicability.

View RFO version
52.242-3 Penalties for Unallowable Costs.

As prescribed in 42.709-7, use the following clause:

Penalties for Unallowable Costs (DEC 2022)

(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—

(i) Relates to any payment made on the basis of billing rates; or

(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. 3748 or 41 U.S.C. chapter 43, as applicable, which is implemented in section 42.709 of the Federal Acquisition Regulation (FAR).

(c) The Contractor shall not include in any proposal any cost that is unallowable, as defined in subpart 2.1 of the FAR, or an executive agency supplement to the 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

(ii) Using the applicable rate effective for each six-month interval prescribed by the Secretary of the Treasury pursuant to Pub. L. 92-41 (85 Stat. 97).

(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.

(f) Determinations under paragraphs (d) and (e) of this clause are final decisions within the meaning of 41 U.S.C. chapter 71, Contract Disputes).

(g) Pursuant to the criteria in FAR 42.709-6, 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.

(End of clause)

[60 FR 42659, Aug. 16, 1995, as amended at 66 FR 2135, Jan. 10, 2001; 79 FR 24224, Apr. 29, 2014; 86 FR 44255, Aug. 11, 2021; 87 FR 73902, Dec. 1, 2022]
42.709-7
Use the clause at 52.242-3, Penalties for Unallowable Costs, in all solicitations and contracts over $1 million except fixed-price contracts without cost incentives or any firm-fixed-price contract for the purchase of commercial products or commercial services. Generally, covered contracts are those which contain one of the clauses at 52.216-7, 52.216-16, or 52.216-17, or a similar clause from an executive agency's supplement to the FAR.
Prescription data sourced from eCFR as of 2026-06-10 03:16 UTC. Cross-references within the prescription are not resolved automatically.

Regulatory Stack

The layers of regulation that govern this clause, from the FAR prescription through agency-specific supplements and any active deviations.

RFO RFO Version Overhauled clause text
The Revolutionary FAR Overhaul publishes a revised version of this clause. See the RFO Version tab for the controlling authority under the RFO model.

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FAR FAR Prescription 42.709-7
Use the clause at 52.242-3, Penalties for Unallowable Costs, in all solicitations and contracts over $1 million except fixed-price contracts without cost incentives or any firm-fixed-price contract for the purchase of commercial products or commercial services. Generally, covered contracts are those which contain one of the clauses at 52.216-7, 52.216-16, or 52.216-17, or a similar clause from an executive agency's supplement to the FAR.

View on acquisition.gov · View on eCFR.gov

Version History

Version history is sourced from the codified eCFR. Changes published only as class deviations or by the Revolutionary FAR Overhaul do not appear here until they are incorporated into the eCFR. For RFO-driven changes see the RFO Version tab and any active deviations cited above.

3 versions tracked from 2021-08-11 to 2022-12-30.
DEC 2022 December 30, 2022 CURRENT
Removed in this version
Added in this version
Unchanged
December 1, 2022 (previous)
December 30, 2022 (current)
1 added, 1 removed
(b)
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).
(b)
The penalties are prescribed in 10 U.S.C. 3748 or 41 U.S.C. chapter 43, as applicable, which is implemented in section 42.709 of the Federal Acquisition Regulation (FAR).
DEC 2022 December 1, 2022 SUBSTANTIVE
Removed in this version
Added in this version
Unchanged
AUG 2021 (previous)
DEC 2022 (current)
1 added, 1 removed
(g)
(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.
(g)
(g) Pursuant to the criteria in FAR 42.709-6, the Contracting Officer may waive the penalties in paragraph (d) or (e) of this clause.
AUG 2021 August 11, 2021 SUBSTANTIVE
Earliest version available from the eCFR

RFO Version

Comparison of the codified eCFR text against the Revolutionary FAR Overhaul revision. Highlights show additions (green) and deletions (red, struck through).

Clause Text

Substantive changes. The RFO version differs materially from the eCFR text.
eCFR (codified)
RFO (implemented)
Unchanged
52.242-3 Penalties for Unallowable Costs.
eCFR (codified)
RFO (implemented)
1 added, 1 removed
As prescribed in 42.709-7, use the following clause:
As prescribed in 42.508-7, use the following clause:
2 added, 2 removed
Penalties for Unallowable Costs (DEC 2022)
Penalties for Unallowable Costs (Deviation Date)
1 added, 1 removed
(b)
3748 or 41 U.S.C. chapter 43, as applicable, which is implemented in section 42.709 of the Federal Acquisition Regulation (FAR).
(b)
3748 or 41 U.S.C. chapter 43, as applicable, which is implemented in section 42.508 of the Federal Acquisition Regulation (FAR).
1 added, 1 removed
(c)
(c) The Contractor shall not include in any proposal any cost that is unallowable, as defined in subpart 2.1 of the FAR, or an executive agency supplement to the FAR.
(c)
(c) The Contractor must not include in any proposal any cost that is unallowable, as defined in subpart 2.1 of the FAR, or an executive agency supplement to the FAR.
2 added, 2 removed
(d)
(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—
(d)
(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 must be assessed a penalty equal to–
3 added, 6 removed
(ii)
(ii) Using the applicable rate effective for each six-month interval prescribed by the Secretary of the Treasury pursuant to Pub. L. 92-41 (85 Stat. 97).
(ii)
(ii) Using the applicable rate effective for each six-month interval prescribed by the Secretary of the Treasury pursuant to 41 U.S.C. 7109.
1 added, 1 removed
(f)
(f) Determinations under paragraphs (d) and (e) of this clause are final decisions within the meaning of 41 U.S.C. chapter 71, Contract Disputes).
(f)
(f) Determinations under paragraphs (d) and (e) of this clause are final decisions within the meaning of 41 U.S.C. chapter 71, Contract Disputes.
1 added, 1 removed
(g)
(g) Pursuant to the criteria in FAR 42.709-6, the Contracting Officer may waive the penalties in paragraph (d) or (e) of this clause.
(g)
(g) Pursuant to the criteria in FAR 42.508-6, the Contracting Officer may waive the penalties in paragraph (d) or (e) of this clause.
33 removed
[60 FR 42659, Aug. 16, 1995, as amended at 66 FR 2135, Jan. 10, 2001; 79 FR 24224, Apr. 29, 2014; 86 FR 44255, Aug. 11, 2021; 87 FR 73902, Dec. 1, 2022]

Prescription

No substantive changes. The RFO prescription is identical to the eCFR prescription.

Source: acquisition.gov RFO Part 52 · Prescribing Part 42

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