Reading the May 2026 Steel Tariff Order: What Actually Changed

The Executive Order signed earlier this week extends Section 232 steel tariffs to a new category of “derivative” products. Most coverage has framed this as an incremental tightening. The framing is wrong. Three provisions, read together, change the calculus for any importer of finished or semi-finished goods containing steel.

What the order actually says

The order does three things that matter:

First, it adds 87 new HTS codes to the derivative list, covering finished consumer and industrial goods where steel content was previously irrelevant for tariff purposes. The most consequential additions are in appliance subassemblies, agricultural equipment components, and prefabricated structural elements.

Second, it changes the calculation basis from “steel value as a share of total value” to “steel weight as a share of total weight.” This sounds technical but is not. Under the old rule, a high-margin finished good with expensive non-steel components could fall below the threshold. Under the new rule, weight wins. Many products that were exempt last month are not exempt this month.

Third, and least discussed, it removes the country-of-melt-and-pour reporting safe harbor for goods originating in five named jurisdictions. Importers must now affirmatively document the steel’s origin chain or pay the full duty. This is a paperwork burden disguised as a substantive change. The paperwork burden is, in practice, the substantive change.

Who gets hit

The companies that are most exposed are the ones that do not yet know they are exposed. If you import:

• White goods or appliance subassemblies from East Asia,
• Agricultural machinery components from Europe,
• Prefabricated steel building elements from anywhere,

your landed cost just moved. The shift is not 25%. After downstream effects — broker fees, working capital tied up in delayed clearances, the cost of compliance staff — the realistic increase is closer to 32 to 38% for goods where the steel content crosses the new weight threshold.

What I am telling clients to do this week

Three things, in this order:

1. Audit your existing inventory. Goods already on the water under prior tariff classifications are protected if they entered before the effective date. Confirm with your broker, in writing, which shipments fall under which regime.

2. Pull your bill of materials. The weight-basis calculation requires data most procurement teams do not have at hand. The companies that get hurt over the next 90 days are not the ones with high steel content — they are the ones who cannot prove their steel content quickly enough to clear customs.

3. Re-negotiate your INCOTERMS. If you are buying DDP, your supplier is now bearing the tariff. They will push to renegotiate. If you are buying FOB, you are bearing it. Either way, the contracts written six months ago do not reflect the cost reality of next month.

The longer signal

The mechanism here — moving from value-basis to weight-basis, adding paperwork burdens that effectively function as tariffs — is the policy template to watch. It is administratively simpler than rate increases, politically less visible, and harder for trading partners to challenge at the WTO.

Expect to see the same template applied to aluminum derivatives within ninety days.