New Steel and Aluminum Tariff Rules Further Increase Costs

Key Takeaways

• 25% tariff now levied on entire product value, not just metal.
• 50% tariff remains on raw steel, aluminum and copper commodities.
• Derivative goods face higher duties despite lower percentage rate.
• CBP can add derivatives ad‑hoc, increasing compliance uncertainty.
• Importers may see cost hikes of up to 150% on some items.

Pulse Analysis

The Section 232 national‑security tariffs, first imposed in 2018, were designed to protect domestic producers of steel, aluminum and, more recently, copper. Under the original framework, duties were calculated on the metal content of a product, meaning a 50 % tariff applied only to the value of the steel, aluminum or copper embedded in a finished good. This approach left the labor, machining and other value‑added components untaxed, creating a relatively narrow tax base. Over the past two years the list of derivative products has expanded dramatically, adding complexity for importers and trade lawyers alike.

The April 6 proclamation flips that calculation on its head. A 25 % tariff now applies to the entire transaction price of any product that is “substantially made” of the covered metals, while raw coils and sheets remain subject to a 50 % duty on their full value. In practical terms, a $1,000 appliance containing $200 of steel jumps from a $100 duty under the old rule to $250 under the new one—a 150 % increase in tariff expense. Industries ranging from automotive and construction equipment to household appliances are poised to feel the squeeze, as higher landed costs either erode profit margins or are passed on to consumers.

The policy shift also eliminates the formal, notice‑and‑comment process for adding new derivative categories, giving Customs and Border Protection discretion to expand the tariff base at will. This regulatory uncertainty heightens compliance risk and may incentivize firms to reshuffle supply chains, seek domestic sourcing, or invest in tariff‑management software—though no technology can offset the underlying tax increase. Analysts warn that prolonged cost pressure could dampen U.S. demand for imported metal‑intensive goods, potentially prompting retaliatory measures from trading partners. Companies will need to reassess pricing, sourcing and risk‑mitigation strategies in light of the broader tax base.