Both US GAAP (ASC 805, Business Combinations, and ASC 350, Intangibles — Goodwill and Other) and IFRS (IFRS 3(R), Business Combinations, and IAS 38, Intangible Assets) define intangible assets as nonmonetary assets without physical substance. The recognition criteria for both accounting models require that there be probable future economic benefits from costs that can be reliably measured, although some costs are never capitalized as intangible assets (e.g., start-up costs). Goodwill is recognized only in a business combination. With the exception of development costs (addressed below), internally developed intangibles are not recognized as assets under either ASC 350 or IAS 38. Moreover, internal costs related to the research phase of research and development are expensed as incurred under both accounting models.