up if one member charges another member for services, even where the member bearing the charge derives no benefit. To combat this, the rules of most systems allow the tax authorities to challenge whether the services allegedly performed actually benefit the member charged. The inquiry may focus on whether services were indeed performed as well as who benefited from the services. For this purpose, some rules differentiate stewardship services from other services. Stewardship services are generally those that an investor would incur for its own benefit in managing its investments. Charges to the investee for such services are generally inappropriate. Where services were not performed or where the related party bearing the charge derived no direct benefit, tax authorities may disallow the charge altogether.the services were performed and provided benefit for the related party bearing a charge for such services, tax rules also permit adjustment to the price charged. Rules for testing prices of services may differ somewhat from rules for testing prices charged for goods due to the inherent differences between provision of services and sale of goods. The OECD Guidelines provide that the provisions relating to goods should be applied with minor modifications and additional considerations. In the US, a different set of price testing methods is provided for services. In both cases, standards of comparability and other matters apply to both goods and services.is common for enterprises to perform services for themselves (or for their components) that support their primary business. Examples include accounting, legal, and computer services for those enterprises not engaged in the business of providing such services. Transfer pricing rules recognize that it may be inappropriate for a component of an enterprise performing such services for another component to earn a profit on such services. Testing of prices charged in such case may be referred to a cost of services or services cost method. Application of this method may be limited under the rules of certain countries, and is required in some countries eg Canada.services performed are of a nature performed by the enterprise (or the performing or receiving component) as a key aspect of its business, OECD and US rules provide that some level of profit is appropriate to the service performing component. Canada »s rules do not permit such profit. Testing of prices in such cases generally follows one of the methods described above for goods. The cost-plus method, in particular, may be favored by tax authorities and taxpayers due to ease of administration.sharingcomponent enterprises may find significant business advantage to sharing the costs of developing or acquiring certain assets, particularly intangible assets. Detailed US rules provide that members of a group may enter into a cost sharing agreement (CSA) with respect to costs and benefits from the development of intangible assets. OECD Guidelines provide more generalized suggestions to tax authorities for enforcement related to cost contribution agreements (CCAs) with respect to acquisition of various types of assets. Both sets of rules generally provide that costs should be allocated among members based on respective anticipated benefits. Inter-member charges should then be made so that each member bears only its share of such allocated costs. Since the allocations must inherently be made based on expectations of future ev...