Global tax strategies positioning your business for your next move

Rook International CPAs is a family-owned, international tax firm providing services to business owners in and outside the US.

Discover Our Services

We’re personally based in Madrid, but our business is in the US. Want to be sure your business taxes are optimized for your location? Let’s connect!

We ensure your business is designed to weather all elements.

Moving to Europe with a business? Bienvenidos from Spain! We’ve been there, done that. Now, we’re committed to designing custom tax strategies that ensure your business is ready for its European chapter.

6 Continents

We specialize in serving clients currently in or moving to Europe, but we’ve worked with clients almost everywhere.

7 Years

Working in expat taxes, helping business owners insulate their US tax returns from the IRS.

2 Languages

The entire team at Rook CPAs grew up in two languages, and we know the American Dream can be accented. We welcome US business owners from all backgrounds.

Move Abroad from the US with Your Business

We know it’s possible (and can feel daunting) because we’ve personally done it! Rook International CPAs and Advisors is a US-owned firm specializing in tax planning services for established and growing business owners. We believe that, with the right plan in place, moving abroad with a business is a decision that leads to increased opportunities and a better work-life balance. Let us handle your tax affairs so you can enjoy the Dolce Vita, wherever you are.

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Set Up (Or Reorganize) Your Business in the US with a Trusted Tax Partner

The US market is a potentially lucrative one to tap, but you want to make sure you’re set up for success. Our inbound business advisory service emphasizes forward-thinking planning and strategic execution so that you can focus on growing your business without fear that you’ve made a costly miscalculation, incorrectly filed a form, or missed a filing deadline.

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Testimonials

See what our clients have to say about us.

"
I own and operate 6 companies in the Netherlands as well as a property management company in the USA and handle 100% of my American tax responsibilities together with Rook International. They are extraordinarily knowledgeable and showcase their understanding in every call we have.

Josh B.

Netherlands

"
Nicolas Castillo's knowledge and guidance of the US tax preparation process is excellent. He took the time to explain everything clearly, answer questions, and help me identify deductions and credits I wasn't aware of. His proactive approach and attention to detail resulted in substantial savings. I highly recommend his services to anyone seeking a reliable and trustworthy US CPA.

Alexander C.

Spain

Plan Your Every Move with Purpose

We’re hanging up the traditional CPA-client relationship model and creating something new and bold for global business owners – and we’d love you to consider this your official invitation to be a part of it.

Meet the Team

What's Better Than a Virtual Meeting? An In-Person One

A handshake that you hope was firm enough, but not too firm. The initial feeling of awkwardness changing to a growing sense of confidence that you're actually getting to know someone. Talking about why you built your business. Learning how to think beyond compliance and lean into tax planning and strategy.

You Seem Like Someone Who Likes Learning

Visit our library of educational resources, featuring our latest blog articles, media appearances, and upcoming in-person events.

Enter The Library

By Nicolás Castillo | 27 Feb, 2025 | IRS general forms

A Guide to Applying the Foreign Earned Income Exclusion (FEIE)

Living and working abroad as a US taxpayer comes with exciting opportunities and unique challenges, including ...

By Nicolás Castillo | 20 Feb, 2025 | IRS general forms

How To File US Taxes From Abroad: IRS Form 1040

If you're a US taxpayer living abroad, at some point you'll probably need to research "how to file US taxes from ...

By Nicolás Castillo | 12 Feb, 2025 | IRS general forms

IRS Form 1116 (Foreign Tax Credit): A Guide for US Expats

The Foreign Tax Credit is claimed using IRS Form 1116, and reduces a US taxpayer’s US tax liability based on the taxes they’ve paid to a foreign country. This article covers what the Foreign Tax Credit is, how it works, who qualifies, and the steps to claim it.

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Get in touch with us today!