Section 232 vs. drawback: why substitution doesn't apply

Section 232 steel and aluminum duties should not be treated like ordinary customs duties in a substitution drawback program. The first question is not whether the imported and exported articles share an HTS classification. The first question is whether the particular Section 232 action allows drawback at all.

As of June 6, 2026, the answer is narrow. The current metals framework generally continues to restrict drawback on Section 232 steel and aluminum duties, with a limited manufacturing-drawback opening for qualifying articles under Proclamation 11021. That opening is not a general unused-merchandise substitution pool.

Where Section 232 authority comes from

Section 232 is the national-security provision of the Trade Expansion Act of 1962. It authorizes the Secretary of Commerce to investigate whether imports threaten to impair national security and authorizes the President, after the statutory findings, to adjust imports of the article and its derivatives.

For steel and aluminum, the operational duty lines sit in Chapter 99, Subchapter III, HTSUS, not just in the Chapter 72, 73, or 76 tariff classification of the merchandise. That matters because the Chapter 99 line and the applicable proclamation control the additional Section 232 duty and any drawback limitation.

Current steel and aluminum scope and rates are not static

The original 2018 steel and aluminum actions were later amended many times. BIS identifies Proclamations 9704 and 9705, Proclamation 9980 for derivatives, Proclamations 10895 and 10896, and Proclamation 10947 as key actions for steel and aluminum. BIS also notes that 2025 changes expanded downstream derivative coverage and ended new exclusion processing.

The 2026 metals restructuring is especially important. Proclamation 11021, effective for entries on or after April 6, 2026, reorganized the steel, aluminum, and copper metals framework. In broad terms, it retained a 50% additional duty for many listed metal articles, applied 25% treatment to certain listed derivative articles, and used a 15% temporary treatment for certain metal-intensive industrial and grid-related equipment through 2027. A June 1, 2026 proclamation makes additional changes effective June 8, 2026, including temporary treatment for specified Annex I-C products through December 31, 2027.

For claims work, do not rely on a rate table saved in a desk file. Confirm the entry-date HTSUS, the Chapter 99 line, the proclamation in force on the entry date, the product list or annex, origin and metal-content requirements, and any CBP implementation guidance.

Why substitution does not work the same way here

Ordinary drawback analysis often starts with the drawback statute. For unused-merchandise substitution, 19 U.S.C. § 1313(j)(2) allows exported or destroyed merchandise to stand in for imported duty-paid merchandise if the statutory requirements are met. For manufacturing substitution, 19 U.S.C. § 1313(b) can allow drawback when substituted merchandise is used to manufacture exported articles.

Section 232 adds another layer. The presidential proclamations imposing the Section 232 duties can limit drawback on those duties. CBP’s trade-remedies drawback FAQ, citing CSMS 19-000050 and Proclamations 9739 and 9740, states that goods subject to Section 232 steel and aluminum duties are ineligible for refund of those Section 232 duties under that guidance.

The current 2026 exception is limited and proclamation-specific. Proclamation 11021 allows manufacturing drawback under 19 U.S.C. § 1313(a)–(b) only for articles meeting listed conditions: the HTSUS provision must be in the specified annexes or later included; the article must not be of a type subject to an AD/CVD order; it must be a product of a Trade Agreement Partner; and the covered metal content must be melted/poured or smelted/cast in a Trade Agreement Partner country. Except for that clause, no other drawback claims are available for duties imposed under that proclamation.

That is why Section 232 steel and aluminum duties should not be booked into a general substitution drawback program the way ordinary customs duties often are. If the proclamation says no drawback, substitution cannot override that. If the proclamation allows only a narrow category of manufacturing drawback, the claim must fit that category. And if the claim is direct identification, the records must trace the actual imported duty-paid merchandise, not merely an interchangeable export.

Where direct identification fits

Direct identification is the safer framing when the claim depends on the actual imported merchandise that paid the Section 232 duty. For unused merchandise, direct identification sits under 19 U.S.C. § 1313(j)(1). For manufacturing drawback, direct identification sits under 19 U.S.C. § 1313(a). Both require records that connect the import, the duty paid, the merchandise or material, the export or destruction, and the claimant’s right to claim drawback.

In practice, direct identification means the claim file should show which import entry and line supplied the exported merchandise or the input used in the exported manufactured article. For Section 232 entries, the file should also show the applicable Chapter 99 line, the Chapter 1–97 classification, the duty paid, the metal value or full-value basis used for the duty calculation, and the origin, melt-and-pour, or smelt-and-cast data required for the particular steel or aluminum measure.

For derivative articles, recordkeeping is even more important. BIS states that, depending on the HTSUS classification, certain steel and aluminum derivatives have been assessed either on the full value of the product or on the value of the steel or aluminum content. If the duty was calculated on metal content, your drawback file should preserve the worksheet, supplier support, bill of materials, and entry data that explain that value.

The practical compliance line

The line is this: do not assume that a Section 232 duty follows the ordinary-duty substitution rules. A substitution claim may be valid for ordinary duties, MPF, HMF, or Section 301 duties on the same entry, while the Section 232 component is excluded or limited by the proclamation that imposed it.

That split treatment can happen on the same drawback claim. Your system may need to carry separate recoverability flags by duty type, not just by import entry. A claim that overstates the Section 232 component because it treated the duty as generally substitutable can create overclaim exposure, even if the same export supports recovery of other eligible duties.

Records CBP will expect to see

• Entry summary data, including the Chapter 1–97 HTSUS line and the Chapter 99 Section 232 line.
• Proof that the Section 232 duty was paid and the amount allocated to the relevant import line.
• The applicable proclamation and HTSUS version for the entry date.
• Product-level identity records: lot, heat, coil, batch, serial, SKU, inventory movement, or production order, as applicable.
• For steel: melt-and-pour support where required. For aluminum: smelt-and-cast support where required.
• For derivatives: bills of material, supplier declarations, metal-content value calculations, and any worksheet used to support the declared Section 232 value base.
• Export evidence, including the date and fact of exportation, export documents, and proof of the claimant’s right to claim drawback.
• Manufacturing records if claiming under 19 U.S.C. § 1313(a) or the limited Proclamation 11021 manufacturing-drawback pathway.

How to estimate without overclaiming

Start with the import population and separate the duty buckets. Ordinary duties and other eligible taxes and fees may have one treatment. Section 232 steel and aluminum duties need a separate eligibility review by proclamation and entry date.

Then apply a conservative recovery factor. If your facts support direct identification, estimate only the Section 232 duties paid on the actual imported merchandise traced to export or to the exported manufactured article. If your facts support the narrow Proclamation 11021 manufacturing-drawback exception, estimate only the qualifying imports and preserve proof for each condition. If the only theory is unused-merchandise substitution, do not include the Section 232 steel or aluminum duty in the estimate unless current controlling guidance changes.

Estimates are only estimates. Final refunds are set by CBP at liquidation of the drawback claim, and claim outcomes depend on the exact entry facts, exports, classifications, duty lines, privileges, and supporting records. This article is for general information and is not legal advice.

Bottom line

For Section 232, the proclamation controls before the substitution rules matter.

A strong drawback file for steel and aluminum starts by proving what duty was paid, why it was paid, and whether the governing Section 232 action permits that duty to be recovered. If the claim relies on direct identification, build a lot-level or production-level trail. If the claim relies on substitution, do not assume the Section 232 duty comes along for the ride.

This article is for general information and is not legal or tax advice. Drawback eligibility depends on your specific facts, and final refunds are determined by CBP at liquidation. Consult a licensed customs broker or attorney for your situation.