The short answer: it depends on your U.S. activity, not the platform
There is no blanket yes or no. Two sellers can run the same FBA model and reach different tax outcomes.
The difference comes down to three things: how much U.S. activity you actually have, what entity structure you chose, and whether you filed correctly.
Most non-resident Amazon sellers operate through a foreign entity
The typical non-resident Amazon FBA seller registers with a foreign company and a home-country address. Amazon accepts a W-8BEN-E from the foreign entity. No U.S. company is required.
A U.S. entity on Amazon requires a W-9 and a real U.S. operational presence. That means a physical address with a legitimate utility bill, not a virtual office or registered agent mailbox. Most non-resident sellers cannot meet this standard, and attempts to fake it fail Amazon’s verification.
If you were told to form a U.S. single-member LLC for Amazon, that advice may be outdated or wrong. The default path is a foreign entity with a W-8BEN-E. The tax analysis below applies to that structure.
The three-step federal sequence
U.S. federal income tax for non-resident sellers follows a specific order. Skip a step or apply them out of sequence and you get the wrong answer.
Step one is domestic. Do your U.S. activities rise to the level of a U.S. Trade or Business (USTOB)? The threshold is “considerable, continuous, and regular.” You do not need a U.S. office to meet it.
Step two is also domestic. If USTOB exists, is your income Effectively Connected Income (ECI)? This depends on whether your U.S. activities or U.S. assets drove the income.
Step three is treaty. Even if you have USTOB and ECI, a tax treaty may reduce or eliminate the federal tax if you have no Permanent Establishment. But you must file a return and disclose the position. The treaty does not apply automatically.
Most conflicting advice comes from mixing these steps or skipping the first two entirely.
Why most FBA sellers are not at zero
Sellers who place their own inventory in U.S. warehouses, sell to U.S. customers year-round, and run continuous pricing, advertising, and restocking cycles have a pattern the IRS considers high-risk for USTOB.
This is true even when Amazon handles fulfillment as an independent platform. The independent-agent argument belongs to step three (treaty), not step one (domestic).
The typical FBA pattern satisfies both domestic tests. That does not mean you owe federal income tax. It means you need to complete all three steps to find out.
When FBA sellers might be at zero
There are edge cases where USTOB may not exist. A short pilot with no restock. Inventory present, but no active listings or filled orders. Ultra-sporadic sales with long gaps and no pattern.
The line between “no USTOB” and “USTOB with treaty protection” is where most sellers get stuck. The consequences of guessing wrong go in both directions.
Sales tax is a separate obligation
Sales tax has nothing to do with the federal three-step analysis. It runs on a completely separate track.
Amazon collects and remits sales tax as a marketplace facilitator in most states. But “most” is not “all.” Some states require the seller to register and file returns even when the marketplace collects. A few require permits before you can legally sell in the state.
If your inventory sits in Amazon FBA warehouses, you have physical nexus in every state where that inventory is stored. That can trigger registration and filing obligations beyond what Amazon handles for you.
Sales tax compliance includes getting an EIN, registering for permits in required states, and filing returns on schedule. Treaties do not apply. Marketplace collection does not cover every scenario. This is a parallel obligation that most non-resident sellers ignore until it becomes a problem.
Why sellers get conflicting advice
Five patterns explain almost every disagreement.
Layer mixing. Advisors import treaty concepts into the domestic analysis. The dependent-agent test belongs to step three. Using it at step one produces the wrong answer.
Ignoring the asset-use test. U.S. inventory used to fill U.S. orders is a separate ECI trigger that many advisors overlook entirely.
Treating FBA as always safe or always taxable. Neither is correct. The answer depends on the actual pattern of activity.
Overlooking sales tax. Federal income tax and sales tax are separate systems. Solving one does not solve the other.
The “no office, no tax” myth. Domestic law does not require a U.S. office for USTOB. Year-round FBA patterns can be enough.
What a wrong answer costs
File when you should not have, and you may trigger obligations you could have avoided.
Do not file when you should have, and the IRS can assess tax on gross income with no deductions for cost of goods or expenses.
Ignore sales tax, and you accumulate liability in every state where you have nexus. That liability does not go away because Amazon collected on some transactions.
The cost of getting this wrong almost always exceeds the cost of getting a proper analysis done.
CEO Blueprint: get your answer
The CEO Blueprint ($1,250) gives you a definitive answer based on your facts.
Two calls with Scott Letourneau, MSCTA®. A written plan up to 10 pages delivered in 3 business days. Specialist matching to the right CPA, tax attorney, sales tax compliance firm, or transfer pricing expert based on your structure.
On the first call, Scott will walk you through the federal three-step analysis and the sales tax track against your specific facts, flag your exposure, and build a plan to resolve it.
You leave with a recording, a transcript, and a written plan you can execute with confidence.
This post is educational information, not legal or tax advice. Consult a licensed CPA, tax attorney, or enrolled agent for guidance specific to your situation.
