A written instrument which transfers title or purports to transfer title to personal property. It can be either absolute or conditional and does not cover transfers of intangible property (such as intellectual property or contract rights) or real property.

In asset acquisitions, bills of sale are typically delivered as ancillary documents. In commercial transactions, bills of sale can be delivered as either stand-alone sale of goods agreements or agreements that are made under or in reference to sale of goods agreements.

For examples of bills of sale, see Standard Documents, Bill of Sale (Asset Acquisition), Bill of Sale (Warranty), and Bill of Sale (Quitclaim).