State sales and franchise tax
Inventory in an Amazon fulfillment center usually creates physical nexus. Amazon often collects marketplace sales tax, but inventory can still trigger state income or franchise filings, as well as sales tax on non-marketplace sales. Economic nexus may apply even without inventory.
Federal trade or business and ECI
FBA activity is not a per se rule, but year-round U.S. fulfillment of your own inventory is a high-risk pattern for a U.S. trade or business. The domestic threshold asks whether your U.S. activity is considerable, continuous, and regular. A U.S. office or a dependent agent can be evidence of that threshold, but neither is required. If a U.S. trade or business exists, determine whether profits are effectively connected under the business activities or asset use tests, and then layer in any treaty position separately.
Sourcing mechanics
For purchased inventory, sales are generally sourced by place of sale or title passage. For produced inventory, source is generally the place of production. Foreign source sales can still be effectively connected if they are attributable to a U.S. office that materially participates. ECI is tested only after you conclude there is a U.S. trade or business.
Treaty overlay
Even if domestic rules indicate U.S. trade or business and effectively connected income, a treaty can block federal tax on business profits if there is no permanent establishment. Independent agents such as Amazon typically do not create a permanent establishment. A no PE claim must be disclosed on a timely filed return. Treaties do not bind the states.
What to decide before using FBA
- Whether your planned facts will look considerable, continuous, and regular in the United States
- How and where title will pass for purchased goods, and whether any production occurs in the United States
- Whether any person in the United States will have authority to conclude contracts or grant concessions
- State footprint created by inventory locations, economic thresholds, and any non marketplace sales
- Resulting filings by taxpayer type, for example 1120 F with 8833 for a foreign corporation, 1040 NR with 8833 for a foreign individual, 1065 with section 1446 withholding for partnerships, and 5472 with a pro forma 1120 when a foreign owned disregarded LLC has reportable related party transactions
How we help
We map the domestic trade or business and effectively connected income profile, test any treaty position, confirm sourcing and title terms, and chart the state nexus footprint. Then we align entity choice, registrations, and filings so your FBA operations match the tax posture you intend and your marketplace KYC does not work against it.