White House to Impose 15% Tariff on Polysilicon and Derivative Imports

President Trump signed a proclamation to impose a 15% tariff under Section 232 of the 1962 Trade Expansion Act on imports of polysilicon and related derivatives and includes the establishment of minimum import prices (MIP) for these products.

Effective with respect to goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. ET on Dec. 4, 2026, imports of polysilicon ingots and polysilicon derivatives specified in Annex 1 and Annex II of this proclamation shall be subject to an additional 15% ad valorem rate of duty, except as otherwise specified in this proclamation. The applicable minimum import prices for imported polysilicon and polysilicon derivatives, which also take effect at 12:01 a.m. ET on Dec. 4, 2026, will be set at $21 per kilogram for polysilicon; $100 per kilogram for polysilicon ingots and wafers; $0.22 per watt for solar cells; and $0.38 per watt for solar modules.

For products of Japan, Korea, Taiwan, Switzerland, Liechtenstein, or a member nation of the European Union subject to tariffs under this proclamation, the sum of the additional section 232 tariff imposed pursuant to clause (4) of this proclamation and the applicable rate of duty under Column 1 of the HTSUS (Column 1 Duty Rate) shall be equal to 15 percent.

For products of the United Kingdom subject to tariffs under this proclamation, the applicable rate of duty under clause (4) of this proclamation shall be 10 percent.

For additional details see the proclamation and fact sheet.

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