International Tax Lawyers

Serving Clients Worldwide with Tax and Estate Planning Matters

The international tax planning attorneys at Castro & Co. provide seasoned legal guidance in tax planning for private individual clients and family companies as well as domestic and foreign trusts and estates around the world. With offices located in Washington D.C., Miami, Dallas, and Orlando and upcoming offices in New York, London, and Sydney, as well as partner firms in over 130 countries around the world, our international tax lawyers take pride in our ability to serve any client in any part of the world. Every attorney at Castro & Co. provides each case with the individualized representation and undivided attention deserved. Trust and believe that we’re prepared to deliver our top-notch services for your benefit. Our number one priority is guiding you through the tax planning process as smoothly and seamlessly as possible.

Why Work with International Tax Attorneys at Castro & Co.?

Our team knows how demanding of a process international tax planning may appear. That’s why we go above and beyond to develop highly customized plans to achieve your goals promptly and proficiently. More importantly, we never charge for the initial consultation and case review. We only engage our clients on a flat-fee basis after a thorough proposal has been presented clearly outlining the tax savings to be realized by engaging our firm. We do this so that clients can clearly see the cost-benefit ratio of engaging our firm and understand that our fees are an investment with an immediate return. More often than not, the fees paid to our firm will be the highest performing asset in your portfolio when viewed as an investment.

Entrust our experienced international tax attorneys to provide your case with the legal guidance and custom-tailored solutions it needs. Call (833) 227-8761 to schedule a free consultation.

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Our Videos

Castro & Co. is one of the most highly respected international tax planning law firms in the world. Our practiced international tax lawyers exclusively practice tax planning with a mastery of treaty-based tax planning. We are the law firm that other law firms call when they’re faced with a complex international tax matter. Our skilled team of attorneys is committed to delivering the most effective solutions tailored to your unique needs. We prioritize relieving you of your tax and estate planning burdens over anything. Learn more about our top-notch legal services by watching this clip.



  • Already referred a lot of my friends and family members .

    - Ben T.

  • They answer every question you have so you aren't left with doubts.

    - Noemi M.

  • They look out for their clients and give great advice.

    - Kim W.

  • Professionalism approach, competencies, and courtesy.

    - Ettore D.

  • Castro & Co. went above and beyond.

    - Ellen B.

  • Knowledgeable, up-to-date, and easy to work with.

    - Tony P.

The Castro & Co. Difference

  • Free Consultations
  • Innovative Solutions
  • Experienced & Thoroughly Published Attorneys
  • Sophisticated Global Tax Planning

Contact Our Firm Today

Let's discuss your international tax or estate planning matter in detail.

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  • Washington DC

    The Bethesda Office Building 1701 Pennsylvania Ave NW, Suite 200 Washington DC, 20006

  • New York

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  • Los Angeles

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  • Dallas

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  • Miami

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  • Seattle

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  • Orlando

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  • Chicago

    AON Center 200 East Randolph Street Suite 5100 Chicago, Illinois 60601