International E-Commerce
Does storing inventory in the United States create a U.S. tax obligation?
Short answer
It depends: U.S. inventory is an important tax fact, but storage alone does not resolve every federal income tax question. Review the seller’s overall U.S. activities, income sourcing, entity classification and any applicable treaty. Inventory can also raise separate sales tax questions even when federal income tax is limited.
Who this applies to: This applies to foreign sellers using U.S. warehouses, third-party logistics providers or marketplace fulfillment facilities.
Look beyond the warehouse address
The federal inquiry is whether the foreign seller’s activities constitute a U.S. trade or business and which income is effectively connected with that business. Storage is one part of the operating picture. Consider where goods are purchased or manufactured, who negotiates sales, where orders are fulfilled, and what personnel or agents do in the United States. A third-party warehouse contract does not by itself establish either a complete exemption or a universal income tax liability.
Separate domestic law from treaty protection
An applicable income tax treaty can change the federal result, often through business-profits and permanent establishment rules. Some treaty provisions address storage or delivery activities, but their scope and conditions vary. Do not assume every fulfillment arrangement is protected. First establish the seller’s treaty residence and entitlement, then review the actual arrangement against the treaty currently in force. A domestic-law filing obligation may still need attention when a treaty position is taken.
Choose the return based on the seller
A nonresident individual and a foreign corporation do not file the same income tax return. Form 1040-NR may be relevant to the individual, while Form 1120-F may be relevant to a foreign corporation. Protective filing may warrant review where U.S. business status or effectively connected income is uncertain, because late filing can affect deductions. A U.S. LLC adds a separate classification and information-reporting analysis rather than automatically shielding the foreign owner.
Track operational changes and separate taxes
Moving stock into the United States can change the facts from prior years when all goods were shipped from abroad. Preserve inventory movement reports, warehouse agreements, sales terms, personnel records and ownership details. Sales tax is separate: physical presence and economic nexus concepts may be relevant, and marketplace collection does not necessarily cover every channel. General federal treaty conclusions should not be reused as a blanket answer to state sales tax or to another seller’s different structure.
Practical example
Hypothetically, a foreign company shifts from direct overseas shipments to U.S. fulfillment. It should review the warehouse and sales arrangements before assuming that its previous tax position still applies to the new inventory model.
Common mistakes
- Treating a warehouse provider’s marketing statement as tax advice.
- Assuming a treaty storage provision applies without checking its conditions.
Filing requirements
- Identify the taxpayer before selecting Form 1040-NR or Form 1120-F.
- Review protective filing and any required treaty disclosure with a qualified adviser.
Potential penalties
- Unfiled returns can lead to penalties and interest and, in some circumstances, loss of deductions.
Related IRS forms
- Form 1040-NR
- Form 1120-F
What to consider next
- Gather fulfillment contracts and inventory movement records.
- Review U.S. activities under domestic law and any applicable treaty.
- Ask Chirino USA to assess filing exposure before relying on a no-tax conclusion.
Discuss your situation with Chirino USA
Every situation depends on its facts. If you would like a professional to review yours, message us on WhatsApp, email us, or request a consultation — in English or Spanish.
General information, not tax advice
This page provides general educational information about U.S. federal tax rules. It is not individualized tax, legal or accounting advice, and it does not create a client relationship. Results depend on each taxpayer's specific facts.
Written by Roger I. Chirino, founder of Chirino USA Accountants & Advisors P.A.
Supported by licensed CPAs, IRS Enrolled Agents (EAs), and experienced U.S. tax professionals focused on cross-border compliance and planning.
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