FAR and DFARS › FAR Part 52: Solicitation Provisions and Contract Clauses › Subpart 52.2
FAR 52.249-9 Default (Fixed-Price Research and Development).
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
In plain English
This clause lets the Government terminate your fixed-price research and development contract, in whole or in part, if you fail to perform the work on time, fail to make progress, or fail to meet other contract requirements. If terminated for default, you may owe excess costs the Government incurs getting similar work done, though you are not liable for excess costs when the failure is excusable. It matters because it defines when the Government can end your contract for default and what you must deliver and what you may be paid afterward.
Applies to: Contractors under fixed-price research and development contracts containing this clause
What it requires
- Continue the work not terminated if the Government terminates the contract in whole or in part
- Transfer title and deliver completed or partially completed work and other specified property as directed by the Contracting Officer
- Protect and preserve property in your possession in which the Government has an interest, upon the Contracting Officer's direction
Key terms: Notice of Default · excess costs · cure · terminated portion · excusable default
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
As prescribed in 49.504(b), insert the following clause:
Default (Fixed-Price Research and Development) (APR 1984)
(a)(1) The Government may, subject to paragraphs (c) and (d) below, by written Notice of Default to the Contractor, terminate this contract in whole or in part if the Contractor fails to—
(i) Perform the work under the contract within the time specified in this contract or any extension;
(ii) Prosecute the work so as to endanger performance of this contract (but see subparagraph (a)(2) below); or
(iii) Perform any of the other provisions of this contract (but see subparagraph (a)(2) below).
(2) The Government's right to terminate this contract under subdivisions (1)(ii) and (1)(iii) of this paragraph may be exercised if the Contractor does not cure such failure within 10 days (or more, if authorized in writing by the Contracting Officer) after receipt of the notice from the Contracting Officer specifying the failure.
(b) If the Government terminates this contract in whole or in part, it may acquire, under the terms and in the manner the Contracting Officer considers appropriate, work similar to the work terminated, and the Contractor will be liable to the Government for any excess costs for the similar work. However, the Contractor shall continue the work not terminated.
(c) Except for defaults of subcontractors at any tier, the Contractor shall not be liable for any excess costs if the failure to perform the contract arises from causes beyond the control and without the fault or negligence of the Contractor. Examples of such causes include (1) acts of God or of the public enemy, (2) acts of the Government in either its sovereign or contractual capacity, (3) fires, (4) floods, (5) epidemics, (6) quarantine restrictions, (7) strikes, (8) freight embargoes, and (9) unusually severe weather. In each instance the failure to perform must be beyond the control and without the fault or negligence of the Contractor.
(d) If the failure to perform is caused by the default of a subcontractor at any tier, and if the cause of the default is beyond the control of both the Contractor and subcontractor, and without the fault or negligence of either, the Contractor shall not be liable for any excess costs for failure to perform, unless the subcontracted supplies or services were obtainable from other sources in sufficient time for the Contractor to meet the required delivery schedule or other performance requirements.
(e) If this contract is terminated for default, the Government may require the Contractor to transfer title and deliver to the Government, as directed by the Contracting Officer, any (1) completed or partially completed work not previously delivered to, and accepted by, the Government and (2) other property, including contract rights, specifically produced or acquired for the terminated portion of this contract. Upon direction of the Contracting Officer, the Contractor shall also protect and preserve property in its possession in which the Government has an interest.
(f) The Government shall pay the contract price, if separately stated, for completed work it has accepted and the amount agreed upon by the Contractor and the Contracting Officer for (1) completed work for which no separate price is stated, (2) partially completed work, (3) other property described above that it accepts, and (4) the protection and preservation of the property. Failure to agree will be a dispute under the Disputes clause. The Government may withhold from these amounts any sum the Contracting Officer determines to be necessary to protect the Government against loss from outstanding liens or claims of former lien holders.
(g) If, after termination, it is determined that the Contractor was not in default, or that the default was excusable, the rights and obligations of the parties shall be the same as if the termination had been issued for the convenience of the Government.
(h) The rights and remedies of the Government in this clause are in addition to any other rights and remedies provided by law or under this contract.
(End of clause)
Sections it refers to
- 49.504 Termination of fixed-price contracts for default.
Sections that refer to it
- 49.504 Termination of fixed-price contracts for default.
← 52.249-8 Default (Fixed-Price Supply and Service). · 52.249-10 Default (Fixed-Price Construction). →
Rule changes for FAR Part 52
- Federal Acquisition Regulation: Revolutionary FAR Overhaul Parts 8, 12, 13, 15, 38, 44, and 51 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 16, 17, and 35 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 9, 27, and 47 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 14, 28, 36, and 52 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 3 and 49 ↗ · proposed 2026-06-23 · comments due 2026-07-23
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 5, 24, and 29 ↗ · proposed 2026-06-23 · comments due 2026-07-23
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 6, 7, 10, 18, 26, 37, and 41 ↗ · proposed 2026-06-23 · comments due 2026-07-23
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 1, 2, 4, 33, 39, 40, and 53 ↗ · proposed 2026-06-23 · comments due 2026-07-23
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.