The first step allocates operating income to each party to the controlled transactions to provide a market return for its routine contributions to the relevant business activity. Routine contributions are contributions of the same or a similar kind to those made by uncontrolled taxpayers involved in similar business activities for which it is possible to identify market returns. Routine contributions ordinarily include contributions of tangible property, services and intangible property that are generally owned by uncontrolled taxpayers engaged in similar activities. A functional analysis is required to identify these contributions according to the functions performed, risks assumed, and resources employed by each of the controlled taxpayers. Market returns for the routine contributions should be determined by reference to the returns achieved by uncontrolled taxpayers engaged in similar activities, consistent with the methods described in §§ 1.482-3, 1.482-4, 1.482-5 and 1.482-9 ...