9903.82.06 Consolidated Metal 232: Rate, Scope, and Stacking

Key Points

• HTS 9903.82.06 imposes a 10 percent additional duty on covered copper articles and derivative aluminum and steel articles, effective April 6, 2026, with no announced end date.
• The code covers goods described in U.S. Note 16 to Chapter 99, subdivisions (c)(ii), (iv), (vi)-(viii), (xi) and (e), under Proclamation 11021 and the USITC Rev-12 provision text.
• For Chapter 74 copper articles, the 10 percent rate applies to most countries; Great Britain and Russia are explicitly excluded from this code's coverage for Chapter 74 goods.
• Hundreds of derivative-article subheadings in Chapters 82-94 appear on the BIS/CBP derivative watchlist and fall under 9903.82.06 from April 6, 2026 onward, meaning those goods use this code rather than the general 25 percent code 9903.82.09.
• Two heading-level exclusions apply: goods otherwise provided for in headings 9903.82.15 and 9903.85.68 are not covered by 9903.82.06.

On this page

1. What 9903.82.06 covers
2. The authority behind this code
3. Rate and effective window
4. Country scope for copper articles
5. Derivative articles: the watchlist subheadings
6. How 9903.82.06 stacks with other duties
7. How the code appears on a customs entry
8. What importers should do
9. Key references

HTS 9903.82.06 is a Chapter 99 overlay code that adds 10 percent to the duty owed on articles of copper and on derivative aluminum and steel articles, as defined in U.S. Note 16 to Chapter 99, effective April 6, 2026. It sits inside the consolidated Section 232 metals block (the 9903.82 series) and applies to the specific goods and countries described in Note 16 subdivisions (c)(ii), (iv), (vi)-(viii), (xi) and (e). Importers, brokers, and compliance teams working with copper articles, copper-content manufactured goods, or derivative steel and aluminum parts need to know whether their product's Chapter 1-97 subheading triggers this code before filing each entry.

The links in this article go to the primary documents: the proclamations, Federal Register notices, and official tariff schedule pages themselves. Read the source.

What 9903.82.06 covers

The official heading text reads: "Except as provided for in headings 9903.82.15 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(ii), (iv), (vi)-(viii), (xi) and (e) of U.S. note 16 to this subchapter."

That language captures two distinct product streams:

• Articles of copper classified in Chapter 74, for countries other than Great Britain and Russia (those two are excluded from this code's coverage). The country-scope rule for Chapter 74 copper took effect March 12, 2025, and has no announced end date.
• Derivative aluminum and steel articles, a large and growing list of manufactured goods in Chapters 82-94 whose metal content triggers Section 232 liability. These derivative articles appear on the BIS/CBP derivative watchlist and are attached to 9903.82.06 from April 6, 2026 onward under the consolidated-era framework.

Goods otherwise classified under 9903.82.15 or 9903.85.68 are expressly carved out and do not use this code. Confirm the current carve-out text at hts.usitc.gov.

The authority behind this code

The consolidated 9903.82 metals block, including 9903.82.06, is established by Proclamation 11021 and reflected in the USITC Harmonized Tariff Schedule Revision 12 (USITC Rev-12) provision text. The derivative-article subheadings were migrated into the consolidated framework under a CBP system update identified as migration 202607231900. U.S. Note 16 to Chapter 99 is the operative definitional provision; its subdivisions (c)(ii), (iv), (vi)-(viii), (xi) and (e) set the product-eligibility criteria that determine which goods land here versus on a neighboring code such as 9903.82.09.

For context on how the consolidated metals framework relates to other codes in the 9903.82 series, see the companion articles on 9903.82.05 and 9903.82.02.

Rate and effective window

The duty rate imposed by 9903.82.06 is 10 percent ad valorem, additional, meaning it is added on top of the normal column 1 rate (and any other applicable Chapter 99 overlays). This rate has been in effect since April 6, 2026, and no end date has been announced as of August 19, 2026.

The 10 percent rate under 9903.82.06 is distinct from the 25 percent rate under the general derivative-articles code 9903.82.09. Goods on the derivative watchlist that satisfy Note 16 subdivisions (c)(vi)-(viii), (xi) and (e) are directed to 9903.82.06, not 9903.82.09. Getting this classification wrong creates either an overpayment or a potential underpayment; confirm the correct twin code for each subheading in the current HTSUS or with your broker.

Use the duty calculator to model the combined duty burden for a specific subheading before entry.

Country scope for copper articles

For Chapter 74 (articles of copper), 9903.82.06 applies to most countries, with two explicit exclusions: Great Britain (GB) and Russia (RU). This exclusion took effect on March 12, 2025, and has no announced end date.

Practically, this means:

• Copper articles from countries other than GB and RU that meet Note 16's criteria are subject to the 10 percent additional duty under this code.
• Copper articles from Great Britain or Russia do not use 9903.82.06; confirm which heading covers those shipments in the current HTSUS.

For derivative aluminum and steel articles (the watchlist subheadings), the country-scope rules are governed separately by the applicable Note 16 subdivision and may differ. Verify country eligibility for each specific subheading at hts.usitc.gov.

Derivative articles: the watchlist subheadings

As of April 6, 2026, a substantial number of manufactured-goods subheadings in Chapters 82-94 are attached to 9903.82.06 under the BIS/CBP derivative watchlist. The facts block identifies 296 total scope entries; a representative sample of subheadings effective April 6, 2026, with no announced end date, includes:

• 8302.42.30.15, 8302.41.60.45, 8302.41.60.50 (base-metal mountings and fittings)
• 8413.91.90.55 (pump parts)
• 8414.30.40 (compressors)
• 8415.83.00 (air conditioning units)
• 8418.30.00 (freezers)
• 8419.90.10.00 (parts for industrial heating/cooling equipment)
• 8426.20.00 (self-propelled hoists)
• 8450.11.00 (household washing machines)
• 8467.22.00 (drills and similar tools)
• 8479.90.85.00, 8482.10.50.32, 8482.10.50.56, 8482.20.00.64, 8482.20.00.67, 8482.99.45, 8483.40.50.20, 8483.50.90, 8483.60.40, 8483.90.80 (bearings, gears, and transmission components)
• 8487.90.00.80 (machinery parts)
• 8501.11.00 (electric motors, this subheading not listed; confirm at HTSUS)
• 8529.90.73.00, 8538.10.00.00, 8543.90.88.85 (electronic sub-assemblies and parts)
• 8607.30.10.10 (railway brake parts)
• 8701.21.00.80 (tractors)
• 8703.10.50 (vehicles for snow, golf)
• 8708.10.30.50, 8708.99.81 (motor vehicle parts)
• 8716.39.00.40 (trailers)
• 8211.91.50, 8211.92.60 (knives)
• 8215.99.10, 8215.99.40 (spoons, forks, and similar cutlery)
• 8606.29.00 (railway freight cars)
• 9403.99.90.40 (furniture parts)
• 9406.20.00 (prefabricated buildings)

This is not the complete list. The full derivative-article watchlist contains 296 scope entries. Import teams should cross-check every Chapter 1-97 subheading for copper-content or derivative-metal goods against the current HTSUS Chapter 99 notes before filing.

How 9903.82.06 stacks with other duties

9903.82.06 is an additional duty. It stacks on top of:

• The regular Column 1 general rate of duty for the underlying Chapter 1-97 subheading.
• Any Section 301 (China) additional duties applicable to the same goods.
• Any other Chapter 99 overlays that apply simultaneously, such as country-specific tariff codes.

It does not replace the underlying column 1 rate. The total duty bill is the sum of the column 1 rate plus 9903.82.06's 10 percent plus any other applicable layers. For goods that might otherwise fall under 9903.82.09 (the general 25 percent derivative code), classification under 9903.82.06 results in a 15 percentage point lower Section 232 layer, making correct code selection materially significant. Confirm stacking interactions for your specific product with a licensed customs broker or the current HTSUS notes.

For valuation strategies that affect the base on which these percentage rates are calculated, see First Sale Customs Valuation: How to Lower Dutiable Value Legally.

How the code appears on a customs entry

On a CBP Form 7501 (or its ACE equivalent), 9903.82.06 is entered as a second line paired with the primary Chapter 1-97 classification line. The entry will show:

• Line 1: The regular HTS subheading (for example, 7419.80.50.50 for a copper article, or 8450.11.00 for a washing machine), with the column 1 rate and the dutiable value.
• Line 2: 9903.82.06, with a rate of 10 percent, referencing the same dutiable value.

CBP requires the Chapter 99 code to be reported on the entry summary whenever it applies. Omitting it is a classification error. ACE will apply the additional duty calculation against the reported value; verify that the system has accepted the correct pairing before the entry is liquidated.

For a broader overview of how 2026 tariff codes interact in ACE entries, see the 2026 tariff code overview.

What importers should do

• Audit every copper and derivative-metal SKU. Cross-reference each Chapter 1-97 subheading against the Note 16 criteria and the BIS/CBP derivative watchlist to determine whether 9903.82.06 (10 percent) or a different Chapter 99 code applies; the full 296-entry scope list is in the current HTSUS.
• Confirm country of origin before each entry. For Chapter 74 copper articles, goods from Great Britain and Russia are excluded from 9903.82.06 as of March 12, 2025; goods from all other countries are subject to the 10 percent additional duty from April 6, 2026 onward.
• Verify the 9903.82.06 vs. 9903.82.09 determination. Both codes cover derivative articles, but at different rates (10 percent vs. 25 percent); confirm which Note 16 subdivision governs your subheading to avoid overpayment or underpayment.
• Check CBP guidance and CSMS messages for any post-August 19, 2026 updates. No end date has been announced, but the derivative watchlist and country-scope rules can change; monitor cbp.gov and hts.usitc.gov for amendments.

Key references

• Harmonized Tariff Schedule of the United States (USITC), Chapter 99, heading 9903.82.06 and U.S. Note 16 to the subchapter, Rev-12 edition.
• White House Proclamations, Proclamation 11021, establishing the consolidated Section 232 metals regime and the 9903.82 block.
• Federal Register, notices implementing Proclamation 11021 and USITC Rev-12 tariff schedule revisions.
• CBP.gov, ACE CSMS messages and guidance on derivative-article Section 232 entry reporting, including migration 202607231900.
• hts.usitc.gov, complete derivative-article watchlist (all 296 scope entries) under U.S. Note 16 subdivisions (c) and (e).