TPguidelines

All methods rely on certain assumptions. The reliability of the results derived from a method depends on the soundness of such assumptions. Some assumptions are relatively reliable. For example, adjustments for differences in payment terms between controlled and uncontrolled transactions may be based on the assumption that at arm’s length such differences would lead to price differences that reflect the time value of money. Although selection of the appropriate interest rate to use in making such adjustments involves some judgement, the economic analysis on which the assumption is based is relatively sound. Other assumptions may be less reliable. For example, the residual profit split method may be based on the assumption that capitalized intangible development expenses reflect the relative value of the intangible property contributed by each party. Because the costs of developing an intangible may not be related to its market value, the soundness of this assumption will affect the reliability of the results derived from this method.