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#State nexus

Plain-language notes on U.S. tax deadlines, IRS letters, cross-border reporting and running a small business, written by the CPAs who handle these questions every day.

Inventory in CastleGate: State Nexus and U.S. Income Tax Risk for Foreign Wayfair Suppliers
Going global: US companies · Nov 9, 2026

Inventory in CastleGate: State Nexus and U.S. Income Tax Risk for Foreign Wayfair Suppliers

When a Chinese factory places goods in Wayfair's CastleGate warehouses, it has physical presence in each inventory state, which can bring sales tax registration and franchise tax, and states generally ignore the U.S.-China treaty. Federal tax turns on ECI: produced inventory is generally sourced where it's made, but a U.S. office, staff or agents can change that.

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Inventory in Walmart WFS: Which States Can Tax You? Sales Tax, Texas Franchise Tax and California's $800
Small business & company tax · Nov 9, 2026

Inventory in Walmart WFS: Which States Can Tax You? Sales Tax, Texas Franchise Tax and California's $800

Walmart collects sales tax on its orders as a marketplace facilitator, but stock in a WFS warehouse is property in that state and can create physical presence: off-platform sales are yours to tax, some states require registration, and state income tax, Texas franchise tax, California's $800 and Washington B&O aren't the platform's job. States don't follow tax treaties.

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