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US tax filing for foreign nationals & non-residents with an American business or investments

Expert US tax filing for non-residents. We optimize treaty benefits, advise on strategic structuring, and ensure your American business or investments work within your broader international strategy.

  • Serving international entrepreneurs since 2010

  • 1,000+ Form 1040-NR returns filed successfully

Comprehensive US tax solutions for foreign nationals

US business formation & compliance

Set up your US business structure correctly from the start and stay compliant year after year. We guide foreign nationals through LLC formation, EIN acquisition, and registered agent setup, then handle ongoing requirements like Form 5472, BOI reporting, and annual filings. Strategic structuring minimizes your US tax burden while ensuring you meet all IRS and state obligations without costly mistakes.

Form 1040-NR filing & treaty benefits

Optimize tax benefits across both the US and your home country. We help you determine what income you must report, properly classify Effectively Connected Income versus FDAP income, and handle accurate Form 1040-NR preparation. We identify and maximize available treaty benefits between the US and your home country that typical preparers overlook, helping ensure you're not taxed twice on the same income.

Investment income & portfolio reporting

Understand your US tax obligations on investment income and ensure proper reporting. We help you navigate the rules for US stocks, dividends, interest income, and capital gains, determining what's taxable and at what rate. Whether it's your US stock portfolio or a real estate sale with FIRPTA withholding, we handle the reporting and help you minimize what you owe.

“Online Taxman handled my complex tax scenario with impressive expertise and professionalism. I had many questions and special requests throughout the process, and they were consistently patient, clear, and responsive. Despite the complexity, they maintained a high level of professionalism and made me feel supported every step of the way. I would highly recommend them to anyone dealing with international or complicated tax matters.”

— Alex Wise

Our proven approach to international taxes

  1. Connect, your way

    Connect with us in your preferred way – through a video call or by just answering a few questions. We'll assess your situation and come up with a clear plan.

  2. Meet your specialist

    We match you with a dedicated expat tax expert who knows your situation and provides ongoing support throughout the year.

  3. File with confidence and ease

    We tackle the complex calculations, forms, and optimizations. We submit everything to the IRS and states as needed, then track your refund or payment status.

Let's work together : Get expert guidance on your expat taxes

Frequently asked questions

Still have questions? Get in touch by your preferred contact method to get expert guidance.