unit of service. unit of service. any individual, family, aggregate, organization, or community given nursing care. The level at which service is delivered varies with the particular unit entity.
A foreign affiliate as defined in inward FATS statistics is an enterprise resident in a country which is under the control of an institutional unit not resident in the same country. Control is determined according to the concept of the 'ultimate controlling institutional unit' (UCI).
A payee is subject to nonresident alien (NRA) withholding only if it is a foreign person. A foreign person includes a nonresident alien individual, foreign corporation, foreign partnership, foreign trust, a foreign estate, and any other person that is not a U.S. person. It also includes a foreign branch of a U.S. financial institution if the foreign branch is a qualified intermediary.