U.S. Tax Advice for Foreign Entrepreneurs: 5 Questions

Posted by Dora Stefanescu | | Taxes

Two businessmen shaking hands over incorporation and tax compliance documents

The short answer

  • Five questions frame U.S. tax planning for a founder abroad: are you a U.S. tax resident, is your income U.S.-source, do you have a U.S. trade or business, which entity fits, and which state.
  • Residents are generally taxed on worldwide income. Nonresidents are taxed on U.S.-source income and income connected with a U.S. trade or business.
  • A foreign-owned single-member LLC files Form 5472 with a pro forma Form 1120 when it has reportable transactions. The penalty for not filing starts at $25,000.
  • The United States expects you to self-assess, file and pay on time: nobody calculates it for you.
  • Decide the structure with a tax professional before forming the company: changing it later can have a tax cost.
Table of contents
  1. 1. Are you a U.S. tax resident?
  2. 2. Is your income U.S.-source?
  3. 3. Do you have a U.S. trade or business?
  4. 4. Which entity fits?
  5. 5. Which state?
  6. Filings that apply in many cases
  7. Questions to bring to a tax professional
  8. What MyUSAService offers
  9. Frequently asked questions

The United States lets you form a company quickly and sell nationwide. It also expects you to work out your own taxes, file on time and pay without reminders. That is why tax advice for a foreign entrepreneur is most useful before the company exists.

Five questions frame it. This guide gives a short answer to each and points to the detailed guide.

1. Are you a U.S. tax resident?

Residency decides how the IRS taxes you. You are a resident if you meet the green card test or the substantial presence test for the year. Residents are generally taxed on worldwide income. Nonresidents are taxed on U.S.-source income and on income connected with a U.S. trade or business. Details in our guide to U.S. tax residency.

2. Is your income U.S.-source?

Where income comes from matters for nonresidents. Income from sources within the United States is taxable to a nonresident, and other income may not be. The source depends on the type of income and on where the activity takes place. Ask a professional to classify each income stream of your business.

3. Do you have a U.S. trade or business?

A foreign person pays U.S. income tax at graduated rates on income effectively connected with a U.S. trade or business. Whether your activity falls in that category depends on facts: where the work is done, where people and assets are, and how the business operates. See our guide to U.S. business taxes.

4. Which entity fits?

A single-member LLC is disregarded for federal income tax. A multi-member LLC is a partnership by default. A corporation is taxed separately, at 21%. An S corporation is not available to nonresident alien shareholders. Our comparison of LLC and corporation tax treatment covers the differences.

5. Which state?

State taxes and fees are separate from federal taxes, and the state of formation is not always where you owe tax. Compare the yearly cost and your real activity: see the best state to form an LLC.

Filings that apply in many cases

  • Form 5472 with a pro forma Form 1120: foreign-owned single-member LLCs with reportable transactions. Penalty for not filing: $25,000.
  • Form 1065: multi-member LLCs taxed as partnerships.
  • Form 1120: corporations, every year.
  • Form 1040-NR: nonresidents with U.S. taxable income.

The dates are in our calendar of IRS filing deadlines.

Questions to bring to a tax professional

  1. Where will I be tax resident this year, under the U.S. rules and my country’s rules?
  2. Which of my income streams are U.S.-source?
  3. Does my activity count as a U.S. trade or business?
  4. Which entity and which state fit my plans?
  5. Which returns will I file each year, and when?

What MyUSAService offers

MyUSAService forms and maintains U.S. companies for owners abroad and prepares returns from $951 for a single-member LLC or a C corporation, and $951 plus $150 for each Schedule K-1 for a partnership. Prices as of September 2026. Personal tax questions need a tax professional who reviews your case.

Frequently asked questions

Do foreign entrepreneurs pay U.S. tax?

It depends on residency, the source of the income and whether the business is a U.S. trade or business. Filing obligations can exist even with no tax due.

When should I get tax advice?

Before you form the company: structure and state are easier to choose than to change.

Does an LLC avoid U.S. tax for non-residents?

Not automatically. An LLC is a pass-through, and the owner may owe U.S. tax on effectively connected income.

What is the difference between resident and nonresident?

Residents are generally taxed on worldwide income. Nonresidents are taxed on U.S.-source income and income connected with a U.S. trade or business.

Do I have to file a return if I owe nothing?

Often yes. Form 5472 and Form 1120, for example, apply even when no tax is due.

Have questions about your U.S. taxes?

Talk for 30 minutes, free of charge, with a MyUSAService consultant.

  • No obligation
  • Consultation in English
  • 30 minutes
  • We go through your questions one by one

Sources

  1. IRS, Determining an individual's tax residency status
  2. IRS, Effectively connected income (ECI)
  3. IRS, Instructions for Form 5472

First published October 23, 2025. This article is general information, not tax advice for your situation. U.S. tax return filing | Book a free call

Dora Stefanescu

Dora Stefanescu

Part of the MyUSAService team since 2024, Dora is Manager & Lead Bookkeeper for Europe and the United States. She supports clients every day with their requests and coordinates with the operations team.

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