Income derived by a controlled foreign corporation (CFC) from performing services for an unrelated customer generally is not Subpart F income. However, if U.S. related persons furnish substantial assistance contributing to the performance of the services, under regulations, the CFC will be deemed to perform the services for a related person. In such case, the services income would be Subpart F income to the extent attributable to services performed outside the CFC’s country of organization.
