The New Section 232 Rules Are Exactly Why SmartCert Exists

New Section 232 rules effective June 8, 2026 require importers to substantiate metal origin, product classification, and U.S. content claims with supporting documentation. SmartCert gives you that documentation chain, including component-level country of traceability before CBP ever asks.

How SmartCert Addresses the New Requirements

The new rules don’t change what good documentation looks like. They raise the stakes for not having it. SmartCert builds the audit-ready chain your team needs across four areas:

• Lot-level cert capture: Mill certificates, certificates of conformance, and certificates of origin are collected from suppliers and linked to specific part numbers, lot numbers, and purchase orders. Country of origin can be captured and stored at the component level, tied to actual certifications rather than inferred from a supplier’s shipping address.

• Automated compliance review: Incoming supplier documents are checked for completeness before they enter your system. Missing fields, spec mismatches, and out-of-range values are flagged. Gaps are caught before they become a customs problem.

• Multi-tier traceability: A documented chain from raw material origin through the finished part, across supplier tiers. SmartCert identifies and records country of origin at the component level. When the question is “where did the metal in this part come from?”, the answer is supported by actual certifications, not supplier assertions.

• Audit-ready records: Every review decision is logged. A complete record is available for CBP inquiries or government contract audits without scrambling to reconstruct documentation after the fact.

For supply chains already managing DFARS, AS9100, or ITAR traceability requirements, SmartCert consolidates cert management into one platform. The documentation you’re already required to maintain can also help support your Section 232 compliance obligations. The proclamation establishes duty treatments that vary widely depending on product eligibility and supporting documentation, with rates as high as 50% for certain imports down to 15% or lower for qualifying products from named trading partners. SmartCert gives you the documentation foundation to support the most favorable treatment your imports qualify for.

What the New Rules Require

The June 1, 2026 Presidential Proclamation modifies Section 232 tariffs on aluminum, steel, and copper imports effective June 8, 2026. For aerospace, defense, and manufacturing supply chains, three changes create direct documentation requirements.

Duty rates are now tied to product classification

For imports from the EU, UK, Japan, South Korea, Taiwan, and other named trading partners, applicable Section 232 duties now depend on a combination of factors: product classification, country of origin of the metal itself, metal content, and eligibility under specific trade provisions. You need accurate, documented information for each of those factors at the line-item level. (Canada and Mexico follow a separate calculation under the USMCA rule described below.)

The U.S. content exemption threshold dropped to 85%

Products containing at least 85% U.S.-melted and poured steel, or U.S.-smelted and cast aluminum or copper, by weight of the metal content may qualify for favorable tariff treatment. That distinction matters. The proclamation is specific about the production process, not just the origin of the raw material. Substantiating that claim requires traceable documentation showing where the metal was processed, not just where it was shipped from.

Canadian and Mexican suppliers require U.S. content calculation

For USMCA-qualifying products from Canada and Mexico, the duty applies only to the non-U.S. content share of the product value. To calculate and claim that correctly, you need documented U.S. content percentages supported by supplier certifications. The proclamation authorizes CBP to impose penalties where an importer has engaged in fraud or deliberately misrepresented U.S. content claims.

The Question Worth Asking Now

Importers must now be prepared to substantiate origin, classification, and U.S. content claims with supporting documentation. Companies that can’t may face increased compliance risk on every entry. See SmartCert in action.

Source

Presidential Proclamation (June 1, 2026): Further Adjusting the Tariff Regimes for Imports of Aluminum, Steel, and Copper into the United States

Effective: June 8, 2026 | Authority: Section 232 of the Trade Expansion Act of 1962