US Income Tax Expertise for EU-based Businesses

U.S. income tax compliance and planning for U.S. businesses and individuals and for European e-commerce brands entering or operating in the U.S.

Years of Experience

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Clients Served

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Saved in Taxes

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The right process. The right partner.

At Beyond Borders Tax Solutions, we combine a proven process with personalized guidance to simplify U.S. income tax compliance for international businesses. Led by Peter N. Riefstahl, CPA, we help clients navigate complex filings, multi-state issues, and strategic tax planning with clarity and precision. We go Beyond Borders to deliver confidence, not just compliance.

Why Choose Us

Expertise in U.S. Income Tax for European Businesses

When a generalist just won’t do, count on us to provide the depth of knowledge needed to expand your business’ footprint across all 50 states!

Personal Attention with Strategic Insight

See how direct communication with your tax advisor will make all the difference.

Secure, Cloud-based Client Experience

We protect your sensitive tax data with encrypted, cloud-based systems, bank-level security, and multi-factor authentication — no unsecured emails, no paper trails, just safe, seamless compliance.

Services that help your business thrive

Expertise you can trust

Entity Formation & Structuring

Get your business registered and set up for success

Entity Formation & Structuring

Get your business registered and set up for success

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U.S. Tax Compliance And Planning

Ongoing support to ensure timely tax filing and guidance

U.S. Tax Compliance And Planning

Ongoing support to ensure timely tax filing and guidance

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Voluntary Disclosure Agreements

Get caught up with past filing obligations and eliminate penalties in the process

Voluntary Disclosure Agreements

Get caught up with past filing obligations and eliminate penalties in the process.

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Cash Flow Advisory

If there seems to be too much month left at the end of your money, we can map out a cash flow plan to get you back on track

Cash Flow Advisory

If there seems to be too much month left at the end of the money, we can map out a cash flow plan to get you back on track

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Client Testimonials

"Peter and Beyond Borders Tax & Advisory has been a true partner for both personal and business taxes and CPA services. I could not be happier with the speed, professionalism and excellent guidance that I have received over the past years. Highly recommended!"

"Peter prepared our taxes for the 1st time in 2021. With all of our other documents he asked for copies of our 2019 & 2020 taxes. He reviewed them for us and found over $2500 that my previous tax preparer had missed. He's very professional and had everything done in a timely manner. We will definitely continue to use him for our tax prep. Highly recommend!"

"I have worked with 5 people to get my business and personal income taxes done. None were as easy to work with as Peter. He responded to my questions and concerns quickly and efficiently. I intend for him to be my tax preparer for my business and my personal taxes for many years to come."

"Peter is easy to work with and the portal he uses is not complicated. He worked through our tax documents and finished our taxes quickly. Peter is a speedy and thorough communicator and made filing taxes painless for us."

"Absolutely the very best you will find. Extremely experienced and talented. Has gone above and beyond for my team at CloudAtlas from day 1."

Ten tips to help you avoid the costly mistakes that other businesses are making.

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Take the guesswork out of your US income tax compliance

We’ll build a cross-border compliance plan, file in every required state, and support your business’ expansion so you can move forward with confidence