Internal Sale Input Form should be completed. TIMING: The department purchasing the asset should complete the Internal Sale.An asset purchase occurs when the buyer purchases all or some of the assets of a business. In an asset sale, a firm sells some or all of its actual assets, either tangible or intangible. An asset sale occurs when the assets of your business are sold to a buyer. 4 tangible and intangible property not included in the meaning of the term "real estate. Browse 55 AZ Business Assets for sale on BizBuySell. Find currently operating AZ businesses for sale from restaurants to service businesses.