Interactive Brokers is required to withhold U.S. tax on distributions from certain Master Limited Partnership ("MLP") paid to non-US clients. The portion of the MLP dividend distribution subject to withholding tax is called “Effectively Connected Income ("ECI"); this portion of MLP distributions is not eligible for treaty relief.
These rates apply irrespective of whether you are a client with a valid withholding statement of a foreign partnership or a direct account holder by Interactive Brokers.
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