Tesla Wins Trade Zone Status for Texas Megapacks, but China Tariffs Stay
The 14-month approval defers duties on imports but does not exempt Chinese LFP cells from Section 301 tariffs.
Tesla’s Megapack factory in Brookshire, Texas, has been officially designated as a foreign-trade zone (FTZ), a status that allows the manufacturer to defer duties on imported parts. However, this designation does not exempt the facility from paying tariffs on Chinese lithium iron phosphate (LFP) cells, which remain subject to Section 301 duties.
What Happened
The FTZ Board approved Tesla’s request for Subzone 84AM, part of FTZ 84 in the Houston area, with the decision published in the Federal Register on Monday. The approval runs for 14 months. Tesla filed the request on May 20 to cover approximately 80 imported components, including coolant pumps, transformers, busbars, wiring harnesses, circuit boards, and battery cells. The factory began Megapack 3 production in August with a planned capacity of 50 GWh per year.
The FTZ status allows Tesla to pay the lower duty rate on finished products rather than the higher rates on individual imported parts for many components. Duty rates on imported parts can reach 6.5%, while finished Megapacks and Bento inverters face rates ranging from duty-free to 3.4%. However, the application specifies that components subject to Section 301, Section 232, or Section 122 tariffs must be admitted in 'privileged foreign status.' This locks in the part’s original tariff treatment upon entry into the zone.
Why It Matters
For Tesla, the FTZ status provides cash flow benefits by deferring duties until a Megapack leaves the zone and eliminating US duties on exports shipped directly from the facility. It also reduces customs filings and exempts scrap from duties. However, it does not resolve the cost impact of tariffs on Chinese LFP cells. A Chinese LFP cell used in a Megapack sold in the US will still incur the Section 301 tariff on non-EV lithium-ion batteries, which increased from 7.5% to 25% on January 1, 2026. Tesla pays this tariff later, when the finished unit exits the zone.
The approval follows a pattern seen across the industry in 2026, with companies like Eastman Chemical, Rose Batteries, and Qorvo receiving similar time-limited, 'limited basis' approvals. Tesla previously received an identical decision for its California facilities in Fremont, Livermore, and Lathrop, though those approvals had a one-year limit. The 14-month window for the Texas facility expires around the end of 2027, coinciding with the expected start of mass production of LFP cells from LG Energy Solution in Michigan under a $4.3 billion contract.
The Bottom Line
Tesla’s new FTZ status in Texas offers operational and financial flexibility during the factory ramp-up but does not provide a tariff exemption for its supply chain’s reliance on Chinese battery cells. The company continues to face elevated costs for imported LFP cells under current trade regulations, with potential relief dependent on the successful scaling of domestic cell production by late 2027.
