(a) Contracts which refer to this Subpart 31.7 for determining allowable costs shall be deemed to refer to, and shall have the allowability of costs determined by the contracting officer in accordance with, the revision of OMB Circular A-122 in effect on the date of the contract.
(b) Agencies are not expected to place additional restrictions on individual items of cost. However, under 10 U.S.C. 2324(e) and 41 U.S.C. 256(e), the costs cited in 31.603(b) are unallowable.