Unique
(b) Unique(1) In general. Unique means designed for the needs of a specific customer. To determine whether an item is designed for the needs of a specific customer, a taxpayer must consider the extent to which research, development, design, engineering, retooling, and similar activities (customizing activities) are required to manufacture the item and whether the item could be sold to other customers with little or no modification. A contract may require the taxpayer to manufacture more than one unit of a unique item. If a contract requires a taxpayer to manufacture more than one unit of the same item, the taxpayer must determine whether that item is unique by considering the customizing activities that would be needed to produce only the first unit. For the purposes of this paragraph (b), a taxpayer must consider the activities performed on its behalf by a subcontractor. (2) Safe harbors. Notwithstanding paragraph (b)(1) of this section, an item is not unique if it satisfies one or more of the safe harbors in this paragraph (b)(2). If an item does not satisfy one or more safe harbors, the determination of uniqueness will depend on the facts and circumstances. The safe harbors are: (i) Short production period. An item is not unique if it normally requires 90 days or less to complete. In the case of a contract for multiple units of an item, the item is not unique only if it normally requires 90 days or less to complete each unit of the item in the contract. (ii) Customized item. An item is not unique if the total allocable contract costs attributable to customizing activities that are incident to or necessary for the manufacture of the item do not exceed 10 percent of the estimated total allocable contract costs allocable to the item. In the case of a contract for multiple units of an item, this comparison must be performed on the first unit of the item, and the total allocable contract costs attributable to customizing activities that are incident to or necessary for the manufacture of the first unit of the item must be allocated to that first unit. (iii) Inventoried item. A unique item ceases to be unique no later than when the taxpayer normally includes similar items in its finished goods inventory.