Withholding Tax Advisory Attorneys

Committed to Helping You Understand Withholding Regulations

If you are a foreign corporation or individual investing in the United States or a U.S. company making payments to foreign persons, chances are, the recently-issued U.S. nonresident alien withholding regulations affect you. These new rules are voluminous and complex, and the consequences for failure to comply with their substantive or documentation requirements may be harsh. The withholding rules cannot be considered in a vacuum; you also need to understand how they interact with tax treaty provisions and with various anti-abuse rules, such as the “conduit” regulations.

Castro & Co. can help protect your rights and educate you about withholding tax regulations in the U.S. Call (888) 595-5088 to schedule a free initial consultation.

How Our Withholding Tax Advisory Lawyers Can Help

If you are a foreign corporation or individual investing in the United States, we can help you understand the rules, structure your investments to minimize or even eliminate withholding tax, fully benefit from the portfolio interest exception, utilize finance subsidiaries in treaty-favored jurisdictions to attract global investors, and satisfy the complicated documentation requirements.

If you are a U.S. withholding agent, we can help you comply with your withholding obligations and avoid liability by providing the following services:

  • Analyze how the withholding rules apply to your facts.
  • Structure your investments so as to eliminate or minimize withholding.
  • Analyze how treaties impact your withholding obligations.
  • Determine whether and how the conduit rules may affect your withholding obligations.
  • Ensure that you comply with relevant regulation requirements.
  • Negotiate Qualified Intermediary agreement with the IRS on your behalf.

Call Castro & Co. for legal representation from relentless and reliable international tax attorneys at (888) 595-5088! Serving Washington DC, Miami, Dallas and Orlando and clients all over the world.


  • They Can Certainly Deliver

    - North American Society of Tax Advisors

  • Castro & Co Have Helped Many Of Our Clients

    - Israeli Chamber of Commerce in Shanghai

  • Highly Recommend Castro & Co

    - Chinese Manufacturers Association

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  • Washington DC

    The Bethesda Office Building 1701 Pennsylvania Ave NW, Suite 300 Washington DC, 20006

  • Miami

    The Bank of America Tower 701 Brickell Ave, Suite 1550 Miami FL, 33131

  • Dallas

    The North Galleria Tower 13155 Noel Road, Suite 900 Dallas TX, 75240

  • Orlando

    The North Plaza Tower 121 South Orange Ave, Suite 1500 Orlando, Florida 32801