FAR and DFARS › FAR Part 31: Contract Cost Principles and Procedures › Subpart 31.2
FAR 31.205-17 Idle facilities and idle capacity costs.
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 section explains when costs for idle facilities and idle capacity are allowable under government contracts. Generally, idle facility costs are unallowable unless the facilities were necessary for workload fluctuations or became idle due to unforeseeable causes, and then only for a limited time. Idle capacity costs are usually allowable if the capacity is necessary or was originally reasonable and cannot be reduced or eliminated.
Applies to: Contractors incurring costs for idle facilities or idle capacity
Key terms: idle facilities · idle capacity · facilities · costs of idle facilities or idle capacity · unallowable
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
(a) Definitions. As used in this subsection—
Costs of idle facilities or idle capacity means costs such as maintenance, repair, housing, rent, and other related costs; e.g., property taxes, insurance, and depreciation.
Facilities means plant or any portion thereof (including land integral to the operation), equipment, individually or collectively, or any other tangible capital asset, wherever located, and whether owned or leased by the contractor.
Idle capacity means the unused capacity of partially used facilities. It is the difference between that which a facility could achieve under 100 percent operating time on a one-shift basis, less operating interruptions resulting from time lost for repairs, setups, unsatisfactory materials, and other normal delays, and the extent to which the facility was actually used to meet demands during the accounting period. A multiple-shift basis may be used in the calculation instead of a one-shift basis if it can be shown that this amount of usage could normally be expected for the type of facility involved.
Idle facilities means completely unused facilities that are excess to the contractor's current needs.
(b) The costs of idle facilities are unallowable unless the facilities—
(1) Are necessary to meet fluctuations in workload; or
(2) Were necessary when acquired and are now idle because of changes in requirements, production economies, reorganization, termination, or other causes which could not have been reasonably foreseen. (Costs of idle facilities are allowable for a reasonable period, ordinarily not to exceed 1 year, depending upon the initiative taken to use, lease, or dispose of the idle facilities (but see 31.205-42)).
(c) Costs of idle capacity are costs of doing business and are a factor in the normal fluctuations of usage or overhead rates from period to period. Such costs are allowable provided the capacity is necessary or was originally reasonable and is not subject to reduction or elimination by subletting, renting, or sale, in accordance with sound business, economics, or security practices. Widespread idle capacity throughout an entire plant or among a group of assets having substantially the same function may be idle facilities.
(d) Any costs to be paid directly by the Government for idle facilities or idle capacity reserved for defense mobilization production shall be the subject of a separate agreement.
Sections it refers to
- 31.205-42 Termination costs.
← 31.205-16 Gains and losses on disposition or impairment of depreciable property or other capital assets. · 31.205-18 Independent research and development and bid and proposal costs. →
Rule changes for FAR Part 31
- Federal Acquisition Regulation; Technical Amendments ↗ · final rule 2024-04-22 · effective 2024-05-22
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.