9903.82.18—Section 232
Overlay rate
no change
Stacks on top of the base HTSUS rate of the product
Tandom · Duty calculator
See this overlay in a real duty stack
Pick a covered 10-digit code below, plug in country and invoice value, and Tandom will compute the full landed cost with this overlay stacked on the base rate.
Plain-English explanation
HTS 9903.82.18 is a Chapter 99 steel derivative tariff modification under Section 232. When a base 10-digit code falls within this provision's scope, it imposes no change on top of the underlying base duty. It applies only to imports from CA, MX. It has been in effect since 2026-04-29 with no expiration on file.
Rate stack at entry
Description
Authoritative scope text from the U.S. Harmonized Tariff Schedule
Certain articles of steel, as provided for in subdivisions (c)(iii) and (h) of U.S. note 16 to this subchapter
How to use this provision
When and how this overlay shows up at entry
Chapter 99 provision 9903.82.18 is a tariff modification — it doesn't classify a product on its own. When a base 10-digit HTS code falls within this provision's scope and a shipment matches the country and date conditions, the broker declares the base code at entry, then references 9903.82.18 on a separate line so its rate stacks on top.
Claim requirement
commerce_authorized_limited_quantity
Target countries
Applies only to imports from these countries
Related Chapter 99 codes(24)
Other Section 232 provisions in Tandom's catalog
9903.40.05Radial tires of a kind used on motor cars (other than racing cars), station wagons, sport utility vehicles, vans and on-the-highway light trucks (provided for in subheading 4011.10.10 or 4011.20.10)9903.40.10Other tires of a kind used on motor cars (other than racing cars), station wagons, sport utility vehicles, vans and on-the-highway light trucks (provided for in subheading 4011.10.50 or 4011.20.50)9903.74.01Medium- and heavy-duty vehicles as provided for in subdivision (b) of U.S. note 38 to this subchapter.9903.74.02Buses and other vehicles classified in HTSUS heading 8702 as provided for in subdivision (c) of U.S. note 38 to this subchapter.9903.74.03Medium- and heavy-duty vehicles, as provided for in subdivision (d) of U.S. note 38 to this subchapter.Frequently asked questions
What is HTS 9903.82.18?
HTS 9903.82.18 is a Chapter 99 tariff modification under Section 232. It is not a product classification — it's an overlay code that stacks on top of a base 10-digit HTS code at entry. Scope text: Certain articles of steel, as provided for in subdivisions (c)(iii) and (h) of U.S. note 16 to this subchapter
What rate does HTS 9903.82.18 apply?
The provision states: "no change" That rate stacks on top of whatever the base HTSUS rate is for the underlying 10-digit code. Use the Tandom calculator to compute the full landed cost for any covered product.
Which countries does HTS 9903.82.18 apply to?
9903.82.18 applies only to imports from: CA, MX.
Is HTS 9903.82.18 currently active?
Yes — 9903.82.18 is currently active (effective 2026-04-29) with no expiration on file.
Source
Authoritative citation that established this provision
USITC-2026HTSRev7;USITC-Ch99-Note16(h,i);Proc-10984-clause-13
Learn more
Tandom guides relevant to this code
How Chapter 99 tariff layers stack on a single entry
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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How to calculate US import duties
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