In many cases, nonroutine contributions of a taxpayer to the relevant business activity may be contributions of intangible property. For purposes of paragraph (c)(3)(i)(B)(1) of this section, the relative value of nonroutine intangible property contributed by taxpayers may be measured by external market benchmarks that reflect the fair market value of such intangible property. Alternatively, the relative value of nonroutine intangible property contributions may be estimated by the capitalized cost of developing the intangible property and all related improvements and updates, less an appropriate amount of amortization based on the useful life of each intangible property. Finally, if the intangible property development expenditures of the parties are relatively constant over time and the useful life of the intangible property contributed by all parties is approximately the same, the amount of actual expenditures in recent years may be used to estimate the relative value of nonroutine intangible property contributions ...
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