Peak Season: What Black Friday to Christmas Does to a Non-Resident Seller's U.S. Tax Position
A foreign seller who ships nothing into the United States until October, fills three fulfilment centres for Black Friday, and is empty again by February has spent the fourth quarter with more physical presence in the country than in the rest of the year combined. Whether that presence is taxable here is decided on what the business actually did, and peak season is when it did the most of it.
The question the peak quarter raises
For a non-U.S. business, the question is not whether it sold to Americans. It is whether its activity amounted to carrying on a trade or business inside the United States, and, where a treaty applies, whether it had a fixed place of business or a dependent agent here.
Those are tests about facts, not about labels. The facts that move the answer are the ones peak season multiplies: goods stored here, people acting here, and how much of the work of the sale physically happens inside the country.
Inventory in a U.S. warehouse
Stock sitting in a marketplace fulfilment centre or a third-party warehouse is the most common single fact in this analysis. It is also the one sellers are least aware of, because the platform decides where the goods go. A seller can be told their stock has been distributed across five states and never see an address.
Two points that matter more in Q4 than at any other time:
- Volume and duration both count. A warehouse that holds a small buffer all year looks different from one holding an entire season's stock for three months.
- Where a treaty applies, storage alone may not be enough. Many treaties exclude a facility used only for storage or delivery from creating a taxable presence. That exclusion narrows quickly when the same site is also doing packing, returns handling, light assembly, or customer service.
The practical version: what happens at the warehouse in November is not always what happens there in July, and the position follows what happens.
People, temporary and otherwise
Peak season brings in help. A seasonal contractor unpacking and listing stock, a warehouse manager hired for three months, a salesperson at a U.S. trade show in the run-up to Christmas: each is a person doing something for the business inside the country.
The test that carries most weight is whether anyone here can bind the business. An agent who habitually concludes contracts, or who plays the principal role in closing them, can create a taxable presence on their own, even where the goods never sit here. An agent who genuinely acts independently, for several clients, in the ordinary course of their own business, is treated differently.
Seasonal staff are not automatically a problem. Seasonal staff with authority are a different question, and it is worth knowing which you hired before you hire them again.
Returns, and why January is part of Q4
The returns wave lands after the season ends, and it lands in the United States. Processing returns here means inspecting, restocking, refurbishing or disposing of goods inside the country, often at the same facility that shipped them.
That work is activity, and it extends the period during which the business had a physical operation here. A seller who thinks of the season as ending on 25 December may have an operation running into February.
What is actually at stake
| If the business has a taxable U.S. presence | If it does not |
|---|---|
| Profits connected with the U.S. activity are taxed on a net basis, after expenses, at corporate rates | U.S. business profits are not taxed by the United States |
| A U.S. return is required, and deductions generally depend on filing a true and accurate one | A protective filing may still be worth making to keep the position clean |
| A foreign corporation operating through a branch can face an additional tax on its branch profits | Withholding can still apply to certain U.S.-source payments |
| State obligations are separate, and are decided on their own rules | State sales tax registration can still be required regardless of the federal answer |
The last row is the one that surprises people most often. Sales tax and income tax are different systems with different triggers. A seller can owe sales tax collection duties in a state while having no federal income tax presence at all, and inventory in a state is one of the things that creates that duty.
A checklist for the fourth quarter
- Get the addresses. Ask the platform or the 3PL for the list of facilities holding your stock, and keep it. You cannot analyse a footprint you cannot see.
- Write down what happens at each one. Storage only, or storage plus packing, returns, assembly, or service.
- List every person who acted for the business in the United States this quarter, and note which of them could agree a price or sign anything.
- Note when the stock arrived and when it will be gone, including returns processing.
- Decide the filing position before the year closes, not when the first notice arrives.
Sellers who run this each October find the answer is usually stable year to year. Sellers who never run it find out when a marketplace, a bank or a buyer's lawyer asks a question they cannot answer.
The exposure analysis page covers what this looks like as a structural review, and the diagnostic reads your own footprint in about four minutes.